/* PowerPC-specific support for 32-bit ELF
- Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
- Free Software Foundation, Inc.
+ Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
+ 2004, 2005 Free Software Foundation, Inc.
Written by Ian Lance Taylor, Cygnus Support.
-This file is part of BFD, the Binary File Descriptor library.
+ This file is part of BFD, the Binary File Descriptor library.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the
+ Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
/* This file is based on a preliminary PowerPC ELF ABI. The
information may not match the final PowerPC ELF ABI. It includes
#include "libbfd.h"
#include "elf-bfd.h"
#include "elf/ppc.h"
+#include "elf32-ppc.h"
/* RELA relocations are used here. */
-static struct bfd_hash_entry *ppc_elf_link_hash_newfunc
- PARAMS ((struct bfd_hash_entry *entry, struct bfd_hash_table *table,
- const char *string));
-static struct bfd_link_hash_table *ppc_elf_link_hash_table_create
- PARAMS ((bfd *abfd));
-static void ppc_elf_copy_indirect_symbol
- PARAMS ((struct elf_backend_data *bed, struct elf_link_hash_entry *dir,
- struct elf_link_hash_entry *ind));
-static reloc_howto_type *ppc_elf_reloc_type_lookup
- PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
-static void ppc_elf_info_to_howto
- PARAMS ((bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst));
-static void ppc_elf_howto_init
- PARAMS ((void));
-static int ppc_elf_sort_rela
- PARAMS ((const PTR, const PTR));
-static bfd_boolean ppc_elf_relax_section
- PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *));
static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
- PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
-static bfd_boolean ppc_elf_object_p
- PARAMS ((bfd *));
-static bfd_boolean ppc_elf_set_private_flags
- PARAMS ((bfd *, flagword));
-static bfd_boolean ppc_elf_merge_private_bfd_data
- PARAMS ((bfd *, bfd *));
-static int ppc_elf_additional_program_headers
- PARAMS ((bfd *));
-static bfd_boolean ppc_elf_modify_segment_map
- PARAMS ((bfd *));
-static asection *ppc_elf_create_got
- PARAMS ((bfd *, struct bfd_link_info *));
-static bfd_boolean ppc_elf_create_dynamic_sections
- PARAMS ((bfd *, struct bfd_link_info *));
-static bfd_boolean ppc_elf_section_from_shdr
- PARAMS ((bfd *, Elf_Internal_Shdr *, const char *));
-static bfd_boolean ppc_elf_fake_sections
- PARAMS ((bfd *, Elf_Internal_Shdr *, asection *));
-static elf_linker_section_t *ppc_elf_create_linker_section
- PARAMS ((bfd *abfd, struct bfd_link_info *info,
- enum elf_linker_section_enum));
-static bfd_boolean ppc_elf_check_relocs
- PARAMS ((bfd *, struct bfd_link_info *, asection *,
- const Elf_Internal_Rela *));
-static asection * ppc_elf_gc_mark_hook
- PARAMS ((asection *sec, struct bfd_link_info *info, Elf_Internal_Rela *rel,
- struct elf_link_hash_entry *h, Elf_Internal_Sym *sym));
-static bfd_boolean ppc_elf_gc_sweep_hook
- PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *sec,
- const Elf_Internal_Rela *relocs));
-static bfd_boolean ppc_elf_adjust_dynamic_symbol
- PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
-static bfd_boolean allocate_dynrelocs
- PARAMS ((struct elf_link_hash_entry *, PTR));
-static bfd_boolean readonly_dynrelocs
- PARAMS ((struct elf_link_hash_entry *, PTR));
-static bfd_boolean ppc_elf_size_dynamic_sections
- PARAMS ((bfd *, struct bfd_link_info *));
-static bfd_boolean ppc_elf_relocate_section
- PARAMS ((bfd *, struct bfd_link_info *info, bfd *, asection *, bfd_byte *,
- Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms,
- asection **));
-static bfd_boolean ppc_elf_add_symbol_hook
- PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *,
- const char **, flagword *, asection **, bfd_vma *));
-static bfd_boolean ppc_elf_finish_dynamic_symbol
- PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
- Elf_Internal_Sym *));
-static bfd_boolean ppc_elf_finish_dynamic_sections
- PARAMS ((bfd *, struct bfd_link_info *));
-static enum elf_reloc_type_class ppc_elf_reloc_type_class
- PARAMS ((const Elf_Internal_Rela *));
-static bfd_boolean ppc_elf_grok_prstatus
- PARAMS ((bfd *abfd, Elf_Internal_Note *note));
-static bfd_boolean ppc_elf_grok_psinfo
- PARAMS ((bfd *abfd, Elf_Internal_Note *note));
-
-#define BRANCH_PREDICT_BIT 0x200000 /* branch prediction bit for branch taken relocs */
-#define RA_REGISTER_MASK 0x001f0000 /* mask to set RA in memory instructions */
-#define RA_REGISTER_SHIFT 16 /* value to shift register by to insert RA */
+ (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+static bfd_reloc_status_type ppc_elf_unhandled_reloc
+ (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+
+/* Branch prediction bit for branch taken relocs. */
+#define BRANCH_PREDICT_BIT 0x200000
+/* Mask to set RA in memory instructions. */
+#define RA_REGISTER_MASK 0x001f0000
+/* Value to shift register by to insert RA. */
+#define RA_REGISTER_SHIFT 16
/* The name of the dynamic interpreter. This is put in the .interp
section. */
-
#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
/* The size in bytes of an entry in the procedure linkage table. */
/* The number of single-slot PLT entries (the rest use two slots). */
#define PLT_NUM_SINGLE_ENTRIES 8192
-/* Will references to this symbol always reference the symbol
- in this object? */
-#define SYMBOL_REFERENCES_LOCAL(INFO, H) \
- ((! INFO->shared \
- || INFO->symbolic \
- || H->dynindx == -1 \
- || ELF_ST_VISIBILITY (H->other) == STV_INTERNAL \
- || ELF_ST_VISIBILITY (H->other) == STV_HIDDEN) \
- && (H->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0)
-
-/* Will _calls_ to this symbol always call the version in this object? */
-#define SYMBOL_CALLS_LOCAL(INFO, H) \
- ((! INFO->shared \
- || INFO->symbolic \
- || H->dynindx == -1 \
- || ELF_ST_VISIBILITY (H->other) != STV_DEFAULT) \
- && (H->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0)
-\f
-/* The PPC linker needs to keep track of the number of relocs that it
- decides to copy as dynamic relocs in check_relocs for each symbol.
- This is so that it can later discard them if they are found to be
- unnecessary. We store the information in a field extending the
- regular ELF linker hash table. */
-
-struct ppc_elf_dyn_relocs
-{
- struct ppc_elf_dyn_relocs *next;
-
- /* The input section of the reloc. */
- asection *sec;
-
- /* Total number of relocs copied for the input section. */
- bfd_size_type count;
-};
-
-/* PPC ELF linker hash entry. */
-
-struct ppc_elf_link_hash_entry
-{
- struct elf_link_hash_entry root;
-
- /* Track dynamic relocs copied for this symbol. */
- struct ppc_elf_dyn_relocs *dyn_relocs;
-};
-
-#define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
-
-/* PPC ELF linker hash table. */
-
-struct ppc_elf_link_hash_table
-{
- struct elf_link_hash_table root;
-
- /* Small local sym to section mapping cache. */
- struct sym_sec_cache sym_sec;
-};
-
-/* Get the PPC ELF linker hash table from a link_info structure. */
-
-#define ppc_elf_hash_table(p) \
- ((struct ppc_elf_link_hash_table *) (p)->hash)
-
-/* Create an entry in a PPC ELF linker hash table. */
-
-static struct bfd_hash_entry *
-ppc_elf_link_hash_newfunc (entry, table, string)
- struct bfd_hash_entry *entry;
- struct bfd_hash_table *table;
- const char *string;
-{
- /* Allocate the structure if it has not already been allocated by a
- subclass. */
- if (entry == NULL)
- {
- entry = bfd_hash_allocate (table,
- sizeof (struct ppc_elf_link_hash_entry));
- if (entry == NULL)
- return entry;
- }
-
- /* Call the allocation method of the superclass. */
- entry = _bfd_elf_link_hash_newfunc (entry, table, string);
- if (entry != NULL)
- ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
-
- return entry;
-}
-
-/* Create a PPC ELF linker hash table. */
-
-static struct bfd_link_hash_table *
-ppc_elf_link_hash_table_create (abfd)
- bfd *abfd;
-{
- struct ppc_elf_link_hash_table *ret;
-
- ret = ((struct ppc_elf_link_hash_table *)
- bfd_malloc (sizeof (struct ppc_elf_link_hash_table)));
- if (ret == NULL)
- return NULL;
-
- if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
- ppc_elf_link_hash_newfunc))
- {
- free (ret);
- return NULL;
- }
-
- ret->sym_sec.abfd = NULL;
-
- return &ret->root.root;
-}
-
-/* Copy the extra info we tack onto an elf_link_hash_entry. */
-
-static void
-ppc_elf_copy_indirect_symbol (bed, dir, ind)
- struct elf_backend_data *bed;
- struct elf_link_hash_entry *dir, *ind;
-{
- struct ppc_elf_link_hash_entry *edir, *eind;
-
- edir = (struct ppc_elf_link_hash_entry *) dir;
- eind = (struct ppc_elf_link_hash_entry *) ind;
-
- if (eind->dyn_relocs != NULL)
- {
- if (edir->dyn_relocs != NULL)
- {
- struct ppc_elf_dyn_relocs **pp;
- struct ppc_elf_dyn_relocs *p;
-
- if (ind->root.type == bfd_link_hash_indirect)
- abort ();
-
- /* Add reloc counts against the weak sym to the strong sym
- list. Merge any entries against the same section. */
- for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
- {
- struct ppc_elf_dyn_relocs *q;
-
- for (q = edir->dyn_relocs; q != NULL; q = q->next)
- if (q->sec == p->sec)
- {
- q->count += p->count;
- *pp = p->next;
- break;
- }
- if (q == NULL)
- pp = &p->next;
- }
- *pp = edir->dyn_relocs;
- }
-
- edir->dyn_relocs = eind->dyn_relocs;
- eind->dyn_relocs = NULL;
- }
+/* Some nop instructions. */
+#define NOP 0x60000000
+#define CROR_151515 0x4def7b82
+#define CROR_313131 0x4ffffb82
- _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
-}
+/* Offset of tp and dtp pointers from start of TLS block. */
+#define TP_OFFSET 0x7000
+#define DTP_OFFSET 0x8000
\f
-static reloc_howto_type *ppc_elf_howto_table[(int) R_PPC_max];
+static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
static reloc_howto_type ppc_elf_howto_raw[] = {
/* This reloc does nothing. */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
- /* The remaining relocs are from the Embedded ELF ABI, and are not
- in the SVR4 ELF ABI. */
-
- /* 32 bit value resulting from the addend minus the symbol */
- HOWTO (R_PPC_EMB_NADDR32, /* type */
+ /* Marker reloc for TLS. */
+ HOWTO (R_PPC_TLS,
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
+ complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- "R_PPC_EMB_NADDR32", /* name */
+ "R_PPC_TLS", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Computes the load module index of the load module that contains the
+ definition of its TLS sym. */
+ HOWTO (R_PPC_DTPMOD32,
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc_elf_unhandled_reloc, /* special_function */
+ "R_PPC_DTPMOD32", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
- /* 16 bit value resulting from the addend minus the symbol */
- HOWTO (R_PPC_EMB_NADDR16, /* type */
+ /* Computes a dtv-relative displacement, the difference between the value
+ of sym+add and the base address of the thread-local storage block that
+ contains the definition of sym, minus 0x8000. */
+ HOWTO (R_PPC_DTPREL32,
0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC_EMB_NADDR16", /* name */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc_elf_unhandled_reloc, /* special_function */
+ "R_PPC_DTPREL32", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
- 0xffff, /* dst_mask */
+ 0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
- /* 16 bit value resulting from the addend minus the symbol */
- HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
+ /* A 16 bit dtprel reloc. */
+ HOWTO (R_PPC_DTPREL16,
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_dont,/* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC_EMB_ADDR16_LO", /* name */
+ complain_overflow_signed, /* complain_on_overflow */
+ ppc_elf_unhandled_reloc, /* special_function */
+ "R_PPC_DTPREL16", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
- /* The high order 16 bits of the addend minus the symbol */
- HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
- 16, /* rightshift */
+ /* Like DTPREL16, but no overflow. */
+ HOWTO (R_PPC_DTPREL16_LO,
+ 0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC_EMB_NADDR16_HI", /* name */
+ ppc_elf_unhandled_reloc, /* special_function */
+ "R_PPC_DTPREL16_LO", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
- /* The high order 16 bits of the result of the addend minus the address,
- plus 1 if the contents of the low 16 bits, treated as a signed number,
- is negative. */
- HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
+ /* Like DTPREL16_LO, but next higher group of 16 bits. */
+ HOWTO (R_PPC_DTPREL16_HI,
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- ppc_elf_addr16_ha_reloc, /* special_function */
- "R_PPC_EMB_NADDR16_HA", /* name */
+ ppc_elf_unhandled_reloc, /* special_function */
+ "R_PPC_DTPREL16_HI", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
- /* 16 bit value resulting from allocating a 4 byte word to hold an
- address in the .sdata section, and returning the offset from
- _SDA_BASE_ for that relocation */
- HOWTO (R_PPC_EMB_SDAI16, /* type */
- 0, /* rightshift */
+ /* Like DTPREL16_HI, but adjust for low 16 bits. */
+ HOWTO (R_PPC_DTPREL16_HA,
+ 16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC_EMB_SDAI16", /* name */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc_elf_unhandled_reloc, /* special_function */
+ "R_PPC_DTPREL16_HA", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
- /* 16 bit value resulting from allocating a 4 byte word to hold an
- address in the .sdata2 section, and returning the offset from
- _SDA2_BASE_ for that relocation */
- HOWTO (R_PPC_EMB_SDA2I16, /* type */
+ /* Computes a tp-relative displacement, the difference between the value of
+ sym+add and the value of the thread pointer (r13). */
+ HOWTO (R_PPC_TPREL32,
0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC_EMB_SDA2I16", /* name */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc_elf_unhandled_reloc, /* special_function */
+ "R_PPC_TPREL32", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
- 0xffff, /* dst_mask */
+ 0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
- /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
- small data items. */
- HOWTO (R_PPC_EMB_SDA2REL, /* type */
+ /* A 16 bit tprel reloc. */
+ HOWTO (R_PPC_TPREL16,
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC_EMB_SDA2REL", /* name */
+ ppc_elf_unhandled_reloc, /* special_function */
+ "R_PPC_TPREL16", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
- /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
- signed offset from the appropriate base, and filling in the register
- field with the appropriate register (0, 2, or 13). */
- HOWTO (R_PPC_EMB_SDA21, /* type */
+ /* Like TPREL16, but no overflow. */
+ HOWTO (R_PPC_TPREL16_LO,
0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC_EMB_SDA21", /* name */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc_elf_unhandled_reloc, /* special_function */
+ "R_PPC_TPREL16_LO", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
- /* Relocation not handled: R_PPC_EMB_MRKREF */
- /* Relocation not handled: R_PPC_EMB_RELSEC16 */
- /* Relocation not handled: R_PPC_EMB_RELST_LO */
- /* Relocation not handled: R_PPC_EMB_RELST_HI */
- /* Relocation not handled: R_PPC_EMB_RELST_HA */
- /* Relocation not handled: R_PPC_EMB_BIT_FLD */
-
- /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
- in the 16 bit signed offset from the appropriate base, and filling in the
- register field with the appropriate register (0, 2, or 13). */
- HOWTO (R_PPC_EMB_RELSDA, /* type */
- 0, /* rightshift */
+ /* Like TPREL16_LO, but next higher group of 16 bits. */
+ HOWTO (R_PPC_TPREL16_HI,
+ 16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- TRUE, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC_EMB_RELSDA", /* name */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc_elf_unhandled_reloc, /* special_function */
+ "R_PPC_TPREL16_HI", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
- /* GNU extension to record C++ vtable hierarchy */
- HOWTO (R_PPC_GNU_VTINHERIT, /* type */
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
+ /* Like TPREL16_HI, but adjust for low 16 bits. */
+ HOWTO (R_PPC_TPREL16_HA,
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- NULL, /* special_function */
- "R_PPC_GNU_VTINHERIT", /* name */
+ ppc_elf_unhandled_reloc, /* special_function */
+ "R_PPC_TPREL16_HA", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
- 0, /* dst_mask */
+ 0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
- /* GNU extension to record C++ vtable member usage */
- HOWTO (R_PPC_GNU_VTENTRY, /* type */
+ /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
+ with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
+ to the first entry. */
+ HOWTO (R_PPC_GOT_TLSGD16,
0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- NULL, /* special_function */
- "R_PPC_GNU_VTENTRY", /* name */
+ complain_overflow_signed, /* complain_on_overflow */
+ ppc_elf_unhandled_reloc, /* special_function */
+ "R_PPC_GOT_TLSGD16", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
- 0, /* dst_mask */
+ 0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
- /* Phony reloc to handle AIX style TOC entries */
- HOWTO (R_PPC_TOC16, /* type */
+ /* Like GOT_TLSGD16, but no overflow. */
+ HOWTO (R_PPC_GOT_TLSGD16_LO,
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC_TOC16", /* name */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc_elf_unhandled_reloc, /* special_function */
+ "R_PPC_GOT_TLSGD16_LO", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
-};
-\f
+
+ /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
+ HOWTO (R_PPC_GOT_TLSGD16_HI,
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc_elf_unhandled_reloc, /* special_function */
+ "R_PPC_GOT_TLSGD16_HI", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
+ HOWTO (R_PPC_GOT_TLSGD16_HA,
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc_elf_unhandled_reloc, /* special_function */
+ "R_PPC_GOT_TLSGD16_HA", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
+ with values (sym+add)@dtpmod and zero, and computes the offset to the
+ first entry. */
+ HOWTO (R_PPC_GOT_TLSLD16,
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ ppc_elf_unhandled_reloc, /* special_function */
+ "R_PPC_GOT_TLSLD16", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like GOT_TLSLD16, but no overflow. */
+ HOWTO (R_PPC_GOT_TLSLD16_LO,
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc_elf_unhandled_reloc, /* special_function */
+ "R_PPC_GOT_TLSLD16_LO", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
+ HOWTO (R_PPC_GOT_TLSLD16_HI,
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc_elf_unhandled_reloc, /* special_function */
+ "R_PPC_GOT_TLSLD16_HI", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
+ HOWTO (R_PPC_GOT_TLSLD16_HA,
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc_elf_unhandled_reloc, /* special_function */
+ "R_PPC_GOT_TLSLD16_HA", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
+ the offset to the entry. */
+ HOWTO (R_PPC_GOT_DTPREL16,
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ ppc_elf_unhandled_reloc, /* special_function */
+ "R_PPC_GOT_DTPREL16", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like GOT_DTPREL16, but no overflow. */
+ HOWTO (R_PPC_GOT_DTPREL16_LO,
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc_elf_unhandled_reloc, /* special_function */
+ "R_PPC_GOT_DTPREL16_LO", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
+ HOWTO (R_PPC_GOT_DTPREL16_HI,
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc_elf_unhandled_reloc, /* special_function */
+ "R_PPC_GOT_DTPREL16_HI", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
+ HOWTO (R_PPC_GOT_DTPREL16_HA,
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc_elf_unhandled_reloc, /* special_function */
+ "R_PPC_GOT_DTPREL16_HA", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
+ offset to the entry. */
+ HOWTO (R_PPC_GOT_TPREL16,
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ ppc_elf_unhandled_reloc, /* special_function */
+ "R_PPC_GOT_TPREL16", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like GOT_TPREL16, but no overflow. */
+ HOWTO (R_PPC_GOT_TPREL16_LO,
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc_elf_unhandled_reloc, /* special_function */
+ "R_PPC_GOT_TPREL16_LO", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
+ HOWTO (R_PPC_GOT_TPREL16_HI,
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc_elf_unhandled_reloc, /* special_function */
+ "R_PPC_GOT_TPREL16_HI", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
+ HOWTO (R_PPC_GOT_TPREL16_HA,
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc_elf_unhandled_reloc, /* special_function */
+ "R_PPC_GOT_TPREL16_HA", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* The remaining relocs are from the Embedded ELF ABI, and are not
+ in the SVR4 ELF ABI. */
+
+ /* 32 bit value resulting from the addend minus the symbol. */
+ HOWTO (R_PPC_EMB_NADDR32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC_EMB_NADDR32", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* 16 bit value resulting from the addend minus the symbol. */
+ HOWTO (R_PPC_EMB_NADDR16, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC_EMB_NADDR16", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* 16 bit value resulting from the addend minus the symbol. */
+ HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC_EMB_ADDR16_LO", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* The high order 16 bits of the addend minus the symbol. */
+ HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC_EMB_NADDR16_HI", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* The high order 16 bits of the result of the addend minus the address,
+ plus 1 if the contents of the low 16 bits, treated as a signed number,
+ is negative. */
+ HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc_elf_addr16_ha_reloc, /* special_function */
+ "R_PPC_EMB_NADDR16_HA", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* 16 bit value resulting from allocating a 4 byte word to hold an
+ address in the .sdata section, and returning the offset from
+ _SDA_BASE_ for that relocation. */
+ HOWTO (R_PPC_EMB_SDAI16, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC_EMB_SDAI16", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* 16 bit value resulting from allocating a 4 byte word to hold an
+ address in the .sdata2 section, and returning the offset from
+ _SDA2_BASE_ for that relocation. */
+ HOWTO (R_PPC_EMB_SDA2I16, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC_EMB_SDA2I16", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
+ small data items. */
+ HOWTO (R_PPC_EMB_SDA2REL, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC_EMB_SDA2REL", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
+ signed offset from the appropriate base, and filling in the register
+ field with the appropriate register (0, 2, or 13). */
+ HOWTO (R_PPC_EMB_SDA21, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC_EMB_SDA21", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Relocation not handled: R_PPC_EMB_MRKREF */
+ /* Relocation not handled: R_PPC_EMB_RELSEC16 */
+ /* Relocation not handled: R_PPC_EMB_RELST_LO */
+ /* Relocation not handled: R_PPC_EMB_RELST_HI */
+ /* Relocation not handled: R_PPC_EMB_RELST_HA */
+ /* Relocation not handled: R_PPC_EMB_BIT_FLD */
+
+ /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
+ in the 16 bit signed offset from the appropriate base, and filling in the
+ register field with the appropriate register (0, 2, or 13). */
+ HOWTO (R_PPC_EMB_RELSDA, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC_EMB_RELSDA", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* GNU extension to record C++ vtable hierarchy. */
+ HOWTO (R_PPC_GNU_VTINHERIT, /* type */
+ 0, /* rightshift */
+ 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ NULL, /* special_function */
+ "R_PPC_GNU_VTINHERIT", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* GNU extension to record C++ vtable member usage. */
+ HOWTO (R_PPC_GNU_VTENTRY, /* type */
+ 0, /* rightshift */
+ 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ NULL, /* special_function */
+ "R_PPC_GNU_VTENTRY", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Phony reloc to handle AIX style TOC entries. */
+ HOWTO (R_PPC_TOC16, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC_TOC16", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+};
+\f
/* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
-static void
-ppc_elf_howto_init ()
+static void
+ppc_elf_howto_init (void)
+{
+ unsigned int i, type;
+
+ for (i = 0;
+ i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
+ i++)
+ {
+ type = ppc_elf_howto_raw[i].type;
+ if (type >= (sizeof (ppc_elf_howto_table)
+ / sizeof (ppc_elf_howto_table[0])))
+ abort ();
+ ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
+ }
+}
+
+static reloc_howto_type *
+ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ bfd_reloc_code_real_type code)
+{
+ enum elf_ppc_reloc_type r;
+
+ /* Initialize howto table if not already done. */
+ if (!ppc_elf_howto_table[R_PPC_ADDR32])
+ ppc_elf_howto_init ();
+
+ switch (code)
+ {
+ default:
+ return NULL;
+
+ case BFD_RELOC_NONE: r = R_PPC_NONE; break;
+ case BFD_RELOC_32: r = R_PPC_ADDR32; break;
+ case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
+ case BFD_RELOC_16: r = R_PPC_ADDR16; break;
+ case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
+ case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
+ case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
+ case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
+ case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
+ case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
+ case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
+ case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
+ case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
+ case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
+ case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
+ case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
+ case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
+ case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
+ case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
+ case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
+ case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
+ case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
+ case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
+ case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
+ case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
+ case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
+ case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
+ case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
+ case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
+ case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
+ case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
+ case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
+ case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
+ case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
+ case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
+ case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
+ case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
+ case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
+ case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
+ case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
+ case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
+ case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
+ case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
+ case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
+ case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
+ case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
+ case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
+ case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
+ case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
+ case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
+ case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
+ case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
+ case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
+ case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
+ case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
+ case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
+ case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
+ case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
+ case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
+ case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
+ case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
+ case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
+ case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
+ case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
+ case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
+ case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
+ case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
+ case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
+ case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
+ case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
+ case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
+ case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
+ case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
+ case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
+ case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
+ case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
+ case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
+ case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
+ case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
+ case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
+ case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
+ }
+
+ return ppc_elf_howto_table[r];
+};
+
+/* Set the howto pointer for a PowerPC ELF reloc. */
+
+static void
+ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
+ arelent *cache_ptr,
+ Elf_Internal_Rela *dst)
+{
+ /* Initialize howto table if not already done. */
+ if (!ppc_elf_howto_table[R_PPC_ADDR32])
+ ppc_elf_howto_init ();
+
+ BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
+ cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
+}
+
+/* Handle the R_PPC_ADDR16_HA reloc. */
+
+static bfd_reloc_status_type
+ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
+ arelent *reloc_entry,
+ asymbol *symbol,
+ void *data ATTRIBUTE_UNUSED,
+ asection *input_section,
+ bfd *output_bfd,
+ char **error_message ATTRIBUTE_UNUSED)
+{
+ bfd_vma relocation;
+
+ if (output_bfd != NULL)
+ {
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+ }
+
+ if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
+ return bfd_reloc_outofrange;
+
+ if (bfd_is_com_section (symbol->section))
+ relocation = 0;
+ else
+ relocation = symbol->value;
+
+ relocation += symbol->section->output_section->vma;
+ relocation += symbol->section->output_offset;
+ relocation += reloc_entry->addend;
+
+ reloc_entry->addend += (relocation & 0x8000) << 1;
+
+ return bfd_reloc_continue;
+}
+
+static bfd_reloc_status_type
+ppc_elf_unhandled_reloc (bfd *abfd,
+ arelent *reloc_entry,
+ asymbol *symbol,
+ void *data,
+ asection *input_section,
+ bfd *output_bfd,
+ char **error_message)
+{
+ /* If this is a relocatable link (output_bfd test tells us), just
+ call the generic function. Any adjustment will be done at final
+ link time. */
+ if (output_bfd != NULL)
+ return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
+ input_section, output_bfd, error_message);
+
+ if (error_message != NULL)
+ {
+ static char buf[60];
+ sprintf (buf, _("generic linker can't handle %s"),
+ reloc_entry->howto->name);
+ *error_message = buf;
+ }
+ return bfd_reloc_dangerous;
+}
+\f
+/* Sections created by the linker. */
+
+typedef struct elf_linker_section
+{
+ /* Pointer to the bfd section. */
+ asection *section;
+ /* Section name. */
+ const char *name;
+ /* Associated bss section name. */
+ const char *bss_name;
+ /* Associated symbol name. */
+ const char *sym_name;
+ /* Value of symbol. */
+ bfd_vma sym_val;
+} elf_linker_section_t;
+
+/* Linked list of allocated pointer entries. This hangs off of the
+ symbol lists, and provides allows us to return different pointers,
+ based on different addend's. */
+
+typedef struct elf_linker_section_pointers
+{
+ /* next allocated pointer for this symbol */
+ struct elf_linker_section_pointers *next;
+ /* offset of pointer from beginning of section */
+ bfd_vma offset;
+ /* addend used */
+ bfd_vma addend;
+ /* which linker section this is */
+ elf_linker_section_t *lsect;
+ /* whether address was written yet */
+ bfd_boolean written_address_p;
+} elf_linker_section_pointers_t;
+
+struct ppc_elf_obj_tdata
+{
+ struct elf_obj_tdata elf;
+
+ /* A mapping from local symbols to offsets into the various linker
+ sections added. This is index by the symbol index. */
+ elf_linker_section_pointers_t **linker_section_pointers;
+};
+
+#define ppc_elf_tdata(bfd) \
+ ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
+
+#define elf_local_ptr_offsets(bfd) \
+ (ppc_elf_tdata (bfd)->linker_section_pointers)
+
+/* Override the generic function because we store some extras. */
+
+static bfd_boolean
+ppc_elf_mkobject (bfd *abfd)
+{
+ bfd_size_type amt = sizeof (struct ppc_elf_obj_tdata);
+ abfd->tdata.any = bfd_zalloc (abfd, amt);
+ if (abfd->tdata.any == NULL)
+ return FALSE;
+ return TRUE;
+}
+
+/* Fix bad default arch selected for a 32 bit input bfd when the
+ default is 64 bit. */
+
+static bfd_boolean
+ppc_elf_object_p (bfd *abfd)
+{
+ if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
+ {
+ Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
+
+ if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
+ {
+ /* Relies on arch after 64 bit default being 32 bit default. */
+ abfd->arch_info = abfd->arch_info->next;
+ BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
+ }
+ }
+ return TRUE;
+}
+
+/* Function to set whether a module needs the -mrelocatable bit set. */
+
+static bfd_boolean
+ppc_elf_set_private_flags (bfd *abfd, flagword flags)
+{
+ BFD_ASSERT (!elf_flags_init (abfd)
+ || elf_elfheader (abfd)->e_flags == flags);
+
+ elf_elfheader (abfd)->e_flags = flags;
+ elf_flags_init (abfd) = TRUE;
+ return TRUE;
+}
+
+/* Support for core dump NOTE sections. */
+
+static bfd_boolean
+ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
+{
+ int offset;
+ unsigned int size;
+
+ switch (note->descsz)
+ {
+ default:
+ return FALSE;
+
+ case 268: /* Linux/PPC. */
+ /* pr_cursig */
+ elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
+
+ /* pr_pid */
+ elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
+
+ /* pr_reg */
+ offset = 72;
+ size = 192;
+
+ break;
+ }
+
+ /* Make a ".reg/999" section. */
+ return _bfd_elfcore_make_pseudosection (abfd, ".reg",
+ size, note->descpos + offset);
+}
+
+static bfd_boolean
+ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
+{
+ switch (note->descsz)
+ {
+ default:
+ return FALSE;
+
+ case 128: /* Linux/PPC elf_prpsinfo. */
+ elf_tdata (abfd)->core_program
+ = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
+ elf_tdata (abfd)->core_command
+ = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
+ }
+
+ /* Note that for some reason, a spurious space is tacked
+ onto the end of the args in some (at least one anyway)
+ implementations, so strip it off if it exists. */
+
+ {
+ char *command = elf_tdata (abfd)->core_command;
+ int n = strlen (command);
+
+ if (0 < n && command[n - 1] == ' ')
+ command[n - 1] = '\0';
+ }
+
+ return TRUE;
+}
+
+/* Return address for Ith PLT stub in section PLT, for relocation REL
+ or (bfd_vma) -1 if it should not be included. */
+
+static bfd_vma
+ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
+ const asection *plt ATTRIBUTE_UNUSED,
+ const arelent *rel)
+{
+ return rel->address;
+}
+
+/* Handle a PowerPC specific section when reading an object file. This
+ is called when bfd_section_from_shdr finds a section with an unknown
+ type. */
+
+static bfd_boolean
+ppc_elf_section_from_shdr (bfd *abfd,
+ Elf_Internal_Shdr *hdr,
+ const char *name,
+ int shindex)
+{
+ asection *newsect;
+ flagword flags;
+
+ if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
+ return FALSE;
+
+ newsect = hdr->bfd_section;
+ flags = bfd_get_section_flags (abfd, newsect);
+ if (hdr->sh_flags & SHF_EXCLUDE)
+ flags |= SEC_EXCLUDE;
+
+ if (hdr->sh_type == SHT_ORDERED)
+ flags |= SEC_SORT_ENTRIES;
+
+ bfd_set_section_flags (abfd, newsect, flags);
+ return TRUE;
+}
+
+/* Set up any other section flags and such that may be necessary. */
+
+static bfd_boolean
+ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
+ Elf_Internal_Shdr *shdr,
+ asection *asect)
+{
+ if ((asect->flags & SEC_EXCLUDE) != 0)
+ shdr->sh_flags |= SHF_EXCLUDE;
+
+ if ((asect->flags & SEC_SORT_ENTRIES) != 0)
+ shdr->sh_type = SHT_ORDERED;
+
+ return TRUE;
+}
+
+/* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
+ need to bump up the number of section headers. */
+
+static int
+ppc_elf_additional_program_headers (bfd *abfd)
+{
+ asection *s;
+ int ret = 0;
+
+ s = bfd_get_section_by_name (abfd, ".sbss2");
+ if (s != NULL && (s->flags & SEC_ALLOC) != 0)
+ ++ret;
+
+ s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
+ if (s != NULL && (s->flags & SEC_ALLOC) != 0)
+ ++ret;
+
+ return ret;
+}
+
+/* Add extra PPC sections -- Note, for now, make .sbss2 and
+ .PPC.EMB.sbss0 a normal section, and not a bss section so
+ that the linker doesn't crater when trying to make more than
+ 2 sections. */
+
+static struct bfd_elf_special_section const ppc_elf_special_sections[]=
+{
+ { ".tags", 5, 0, SHT_ORDERED, SHF_ALLOC },
+ { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
+ { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
+ { ".sdata2", 7, -2, SHT_PROGBITS, SHF_ALLOC },
+ { ".sbss2", 6, -2, SHT_PROGBITS, SHF_ALLOC },
+ { ".PPC.EMB.apuinfo", 16, 0, SHT_NOTE, 0 },
+ { ".PPC.EMB.sdata0", 15, 0, SHT_PROGBITS, SHF_ALLOC },
+ { ".PPC.EMB.sbss0", 14, 0, SHT_PROGBITS, SHF_ALLOC },
+ { ".plt", 4, 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
+ { NULL, 0, 0, 0, 0 }
+};
+\f
+/* Very simple linked list structure for recording apuinfo values. */
+typedef struct apuinfo_list
+{
+ struct apuinfo_list *next;
+ unsigned long value;
+}
+apuinfo_list;
+
+static apuinfo_list *head;
+
+
+static void
+apuinfo_list_init (void)
+{
+ head = NULL;
+}
+
+static void
+apuinfo_list_add (unsigned long value)
+{
+ apuinfo_list *entry = head;
+
+ while (entry != NULL)
+ {
+ if (entry->value == value)
+ return;
+ entry = entry->next;
+ }
+
+ entry = bfd_malloc (sizeof (* entry));
+ if (entry == NULL)
+ return;
+
+ entry->value = value;
+ entry->next = head;
+ head = entry;
+}
+
+static unsigned
+apuinfo_list_length (void)
+{
+ apuinfo_list *entry;
+ unsigned long count;
+
+ for (entry = head, count = 0;
+ entry;
+ entry = entry->next)
+ ++ count;
+
+ return count;
+}
+
+static inline unsigned long
+apuinfo_list_element (unsigned long number)
+{
+ apuinfo_list * entry;
+
+ for (entry = head;
+ entry && number --;
+ entry = entry->next)
+ ;
+
+ return entry ? entry->value : 0;
+}
+
+static void
+apuinfo_list_finish (void)
+{
+ apuinfo_list *entry;
+
+ for (entry = head; entry;)
+ {
+ apuinfo_list *next = entry->next;
+ free (entry);
+ entry = next;
+ }
+
+ head = NULL;
+}
+
+#define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
+#define APUINFO_LABEL "APUinfo"
+
+/* Scan the input BFDs and create a linked list of
+ the APUinfo values that will need to be emitted. */
+
+static void
+ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
+{
+ bfd *ibfd;
+ asection *asec;
+ char *buffer;
+ unsigned num_input_sections;
+ bfd_size_type output_section_size;
+ unsigned i;
+ unsigned num_entries;
+ unsigned long offset;
+ unsigned long length;
+ const char *error_message = NULL;
+
+ if (link_info == NULL)
+ return;
+
+ /* Scan the input bfds, looking for apuinfo sections. */
+ num_input_sections = 0;
+ output_section_size = 0;
+
+ for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
+ {
+ asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
+ if (asec)
+ {
+ ++ num_input_sections;
+ output_section_size += asec->size;
+ }
+ }
+
+ /* We need at least one input sections
+ in order to make merging worthwhile. */
+ if (num_input_sections < 1)
+ return;
+
+ /* Just make sure that the output section exists as well. */
+ asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
+ if (asec == NULL)
+ return;
+
+ /* Allocate a buffer for the contents of the input sections. */
+ buffer = bfd_malloc (output_section_size);
+ if (buffer == NULL)
+ return;
+
+ offset = 0;
+ apuinfo_list_init ();
+
+ /* Read in the input sections contents. */
+ for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
+ {
+ unsigned long datum;
+ char *ptr;
+
+ asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
+ if (asec == NULL)
+ continue;
+
+ length = asec->size;
+ if (length < 24)
+ {
+ error_message = _("corrupt or empty %s section in %B");
+ goto fail;
+ }
+
+ if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
+ || (bfd_bread (buffer + offset, length, ibfd) != length))
+ {
+ error_message = _("unable to read in %s section from %B");
+ goto fail;
+ }
+
+ /* Process the contents of the section. */
+ ptr = buffer + offset;
+ error_message = _("corrupt %s section in %B");
+
+ /* Verify the contents of the header. Note - we have to
+ extract the values this way in order to allow for a
+ host whose endian-ness is different from the target. */
+ datum = bfd_get_32 (ibfd, ptr);
+ if (datum != sizeof APUINFO_LABEL)
+ goto fail;
+
+ datum = bfd_get_32 (ibfd, ptr + 8);
+ if (datum != 0x2)
+ goto fail;
+
+ if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
+ goto fail;
+
+ /* Get the number of bytes used for apuinfo entries. */
+ datum = bfd_get_32 (ibfd, ptr + 4);
+ if (datum + 20 != length)
+ goto fail;
+
+ /* Make sure that we do not run off the end of the section. */
+ if (offset + length > output_section_size)
+ goto fail;
+
+ /* Scan the apuinfo section, building a list of apuinfo numbers. */
+ for (i = 0; i < datum; i += 4)
+ apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
+
+ /* Update the offset. */
+ offset += length;
+ }
+
+ error_message = NULL;
+
+ /* Compute the size of the output section. */
+ num_entries = apuinfo_list_length ();
+ output_section_size = 20 + num_entries * 4;
+
+ asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
+
+ if (! bfd_set_section_size (abfd, asec, output_section_size))
+ ibfd = abfd,
+ error_message = _("warning: unable to set size of %s section in %B");
+
+ fail:
+ free (buffer);
+
+ if (error_message)
+ (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
+}
+
+/* Prevent the output section from accumulating the input sections'
+ contents. We have already stored this in our linked list structure. */
+
+static bfd_boolean
+ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
+ asection *asec,
+ bfd_byte *contents ATTRIBUTE_UNUSED)
+{
+ return (apuinfo_list_length ()
+ && strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
+}
+
+/* Finally we can generate the output section. */
+
+static void
+ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
+{
+ bfd_byte *buffer;
+ asection *asec;
+ unsigned i;
+ unsigned num_entries;
+ bfd_size_type length;
+
+ asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
+ if (asec == NULL)
+ return;
+
+ if (apuinfo_list_length () == 0)
+ return;
+
+ length = asec->size;
+ if (length < 20)
+ return;
+
+ buffer = bfd_malloc (length);
+ if (buffer == NULL)
+ {
+ (*_bfd_error_handler)
+ (_("failed to allocate space for new APUinfo section."));
+ return;
+ }
+
+ /* Create the apuinfo header. */
+ num_entries = apuinfo_list_length ();
+ bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
+ bfd_put_32 (abfd, num_entries * 4, buffer + 4);
+ bfd_put_32 (abfd, 0x2, buffer + 8);
+ strcpy ((char *) buffer + 12, APUINFO_LABEL);
+
+ length = 20;
+ for (i = 0; i < num_entries; i++)
+ {
+ bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
+ length += 4;
+ }
+
+ if (length != asec->size)
+ (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
+
+ if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
+ (*_bfd_error_handler) (_("failed to install new APUinfo section."));
+
+ free (buffer);
+
+ apuinfo_list_finish ();
+}
+\f
+/* The following functions are specific to the ELF linker, while
+ functions above are used generally. They appear in this file more
+ or less in the order in which they are called. eg.
+ ppc_elf_check_relocs is called early in the link process,
+ ppc_elf_finish_dynamic_sections is one of the last functions
+ called. */
+
+/* The PPC linker needs to keep track of the number of relocs that it
+ decides to copy as dynamic relocs in check_relocs for each symbol.
+ This is so that it can later discard them if they are found to be
+ unnecessary. We store the information in a field extending the
+ regular ELF linker hash table. */
+
+struct ppc_elf_dyn_relocs
+{
+ struct ppc_elf_dyn_relocs *next;
+
+ /* The input section of the reloc. */
+ asection *sec;
+
+ /* Total number of relocs copied for the input section. */
+ bfd_size_type count;
+
+ /* Number of pc-relative relocs copied for the input section. */
+ bfd_size_type pc_count;
+};
+
+/* Of those relocs that might be copied as dynamic relocs, this macro
+ selects those that must be copied when linking a shared library,
+ even when the symbol is local. */
+
+#define MUST_BE_DYN_RELOC(RTYPE) \
+ ((RTYPE) != R_PPC_REL24 \
+ && (RTYPE) != R_PPC_REL14 \
+ && (RTYPE) != R_PPC_REL14_BRTAKEN \
+ && (RTYPE) != R_PPC_REL14_BRNTAKEN \
+ && (RTYPE) != R_PPC_REL32)
+
+/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
+ copying dynamic variables from a shared lib into an app's dynbss
+ section, and instead use a dynamic relocation to point into the
+ shared lib. */
+#define ELIMINATE_COPY_RELOCS 1
+
+/* PPC ELF linker hash entry. */
+
+struct ppc_elf_link_hash_entry
+{
+ struct elf_link_hash_entry elf;
+
+ /* If this symbol is used in the linker created sections, the processor
+ specific backend uses this field to map the field into the offset
+ from the beginning of the section. */
+ elf_linker_section_pointers_t *linker_section_pointer;
+
+ /* Track dynamic relocs copied for this symbol. */
+ struct ppc_elf_dyn_relocs *dyn_relocs;
+
+ /* Contexts in which symbol is used in the GOT (or TOC).
+ TLS_GD .. TLS_TLS bits are or'd into the mask as the
+ corresponding relocs are encountered during check_relocs.
+ tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
+ indicate the corresponding GOT entry type is not needed. */
+#define TLS_GD 1 /* GD reloc. */
+#define TLS_LD 2 /* LD reloc. */
+#define TLS_TPREL 4 /* TPREL reloc, => IE. */
+#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
+#define TLS_TLS 16 /* Any TLS reloc. */
+#define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
+ char tls_mask;
+};
+
+#define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
+
+/* PPC ELF linker hash table. */
+
+struct ppc_elf_link_hash_table
+{
+ struct elf_link_hash_table elf;
+
+ /* Short-cuts to get to dynamic linker sections. */
+ asection *got;
+ asection *relgot;
+ asection *plt;
+ asection *relplt;
+ asection *dynbss;
+ asection *relbss;
+ asection *dynsbss;
+ asection *relsbss;
+ elf_linker_section_t sdata[2];
+ asection *sbss;
+
+ /* Shortcut to .__tls_get_addr. */
+ struct elf_link_hash_entry *tls_get_addr;
+
+ /* TLS local dynamic got entry handling. */
+ union {
+ bfd_signed_vma refcount;
+ bfd_vma offset;
+ } tlsld_got;
+
+ /* Small local sym to section mapping cache. */
+ struct sym_sec_cache sym_sec;
+};
+
+/* Get the PPC ELF linker hash table from a link_info structure. */
+
+#define ppc_elf_hash_table(p) \
+ ((struct ppc_elf_link_hash_table *) (p)->hash)
+
+/* Create an entry in a PPC ELF linker hash table. */
+
+static struct bfd_hash_entry *
+ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
+ struct bfd_hash_table *table,
+ const char *string)
+{
+ /* Allocate the structure if it has not already been allocated by a
+ subclass. */
+ if (entry == NULL)
+ {
+ entry = bfd_hash_allocate (table,
+ sizeof (struct ppc_elf_link_hash_entry));
+ if (entry == NULL)
+ return entry;
+ }
+
+ /* Call the allocation method of the superclass. */
+ entry = _bfd_elf_link_hash_newfunc (entry, table, string);
+ if (entry != NULL)
+ {
+ ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
+ ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
+ ppc_elf_hash_entry (entry)->tls_mask = 0;
+ }
+
+ return entry;
+}
+
+/* Create a PPC ELF linker hash table. */
+
+static struct bfd_link_hash_table *
+ppc_elf_link_hash_table_create (bfd *abfd)
+{
+ struct ppc_elf_link_hash_table *ret;
+
+ ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
+ if (ret == NULL)
+ return NULL;
+
+ if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd,
+ ppc_elf_link_hash_newfunc))
+ {
+ free (ret);
+ return NULL;
+ }
+
+ ret->sdata[0].name = ".sdata";
+ ret->sdata[0].sym_name = "_SDA_BASE_";
+ ret->sdata[0].bss_name = ".sbss";
+
+ ret->sdata[1].name = ".sdata2";
+ ret->sdata[1].sym_name = "_SDA2_BASE_";
+ ret->sdata[1].bss_name = ".sbss2";
+
+ return &ret->elf.root;
+}
+
+/* The powerpc .got has a blrl instruction in it. Mark it executable. */
+
+static bfd_boolean
+ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
+{
+ struct ppc_elf_link_hash_table *htab;
+ asection *s;
+ flagword flags;
+
+ if (!_bfd_elf_create_got_section (abfd, info))
+ return FALSE;
+
+ htab = ppc_elf_hash_table (info);
+ htab->got = s = bfd_get_section_by_name (abfd, ".got");
+ if (s == NULL)
+ abort ();
+
+ flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED);
+ if (!bfd_set_section_flags (abfd, s, flags))
+ return FALSE;
+
+ htab->relgot = bfd_make_section (abfd, ".rela.got");
+ if (!htab->relgot
+ || ! bfd_set_section_flags (abfd, htab->relgot,
+ (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY | SEC_LINKER_CREATED
+ | SEC_READONLY))
+ || ! bfd_set_section_alignment (abfd, htab->relgot, 2))
+ return FALSE;
+
+ return TRUE;
+}
+
+/* We have to create .dynsbss and .rela.sbss here so that they get mapped
+ to output sections (just like _bfd_elf_create_dynamic_sections has
+ to create .dynbss and .rela.bss). */
+
+static bfd_boolean
+ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
+{
+ struct ppc_elf_link_hash_table *htab;
+ asection *s;
+ flagword flags;
+
+ htab = ppc_elf_hash_table (info);
+
+ if (htab->got == NULL
+ && !ppc_elf_create_got (abfd, info))
+ return FALSE;
+
+ if (!_bfd_elf_create_dynamic_sections (abfd, info))
+ return FALSE;
+
+ flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED);
+
+ htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
+ htab->dynsbss = s = bfd_make_section (abfd, ".dynsbss");
+ if (s == NULL
+ || ! bfd_set_section_flags (abfd, s, SEC_ALLOC | SEC_LINKER_CREATED))
+ return FALSE;
+
+ if (! info->shared)
+ {
+ htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
+ htab->relsbss = s = bfd_make_section (abfd, ".rela.sbss");
+ if (s == NULL
+ || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
+ || ! bfd_set_section_alignment (abfd, s, 2))
+ return FALSE;
+ }
+
+ htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
+ htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
+ if (s == NULL)
+ abort ();
+
+ flags = SEC_ALLOC | SEC_CODE | SEC_IN_MEMORY | SEC_LINKER_CREATED;
+ return bfd_set_section_flags (abfd, s, flags);
+}
+
+/* Copy the extra info we tack onto an elf_link_hash_entry. */
+
+static void
+ppc_elf_copy_indirect_symbol (const struct elf_backend_data *bed,
+ struct elf_link_hash_entry *dir,
+ struct elf_link_hash_entry *ind)
+{
+ struct ppc_elf_link_hash_entry *edir, *eind;
+
+ edir = (struct ppc_elf_link_hash_entry *) dir;
+ eind = (struct ppc_elf_link_hash_entry *) ind;
+
+ if (eind->dyn_relocs != NULL)
+ {
+ if (edir->dyn_relocs != NULL)
+ {
+ struct ppc_elf_dyn_relocs **pp;
+ struct ppc_elf_dyn_relocs *p;
+
+ if (ind->root.type == bfd_link_hash_indirect)
+ abort ();
+
+ /* Add reloc counts against the weak sym to the strong sym
+ list. Merge any entries against the same section. */
+ for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
+ {
+ struct ppc_elf_dyn_relocs *q;
+
+ for (q = edir->dyn_relocs; q != NULL; q = q->next)
+ if (q->sec == p->sec)
+ {
+ q->pc_count += p->pc_count;
+ q->count += p->count;
+ *pp = p->next;
+ break;
+ }
+ if (q == NULL)
+ pp = &p->next;
+ }
+ *pp = edir->dyn_relocs;
+ }
+
+ edir->dyn_relocs = eind->dyn_relocs;
+ eind->dyn_relocs = NULL;
+ }
+
+ edir->tls_mask |= eind->tls_mask;
+
+ if (ELIMINATE_COPY_RELOCS
+ && ind->root.type != bfd_link_hash_indirect
+ && dir->dynamic_adjusted)
+ {
+ /* If called to transfer flags for a weakdef during processing
+ of elf_adjust_dynamic_symbol, don't copy non_got_ref.
+ We clear it ourselves for ELIMINATE_COPY_RELOCS. */
+ dir->ref_dynamic |= ind->ref_dynamic;
+ dir->ref_regular |= ind->ref_regular;
+ dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
+ dir->needs_plt |= ind->needs_plt;
+ }
+ else
+ _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
+}
+
+/* Return 1 if target is one of ours. */
+
+static bfd_boolean
+is_ppc_elf_target (const struct bfd_target *targ)
+{
+ extern const bfd_target bfd_elf32_powerpc_vec;
+ extern const bfd_target bfd_elf32_powerpcle_vec;
+
+ return targ == &bfd_elf32_powerpc_vec || targ == &bfd_elf32_powerpcle_vec;
+}
+
+/* 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
+ppc_elf_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)
+ && is_ppc_elf_target (info->hash->creator))
+ {
+ /* Common symbols less than or equal to -G nn bytes are automatically
+ put into .sbss. */
+ struct ppc_elf_link_hash_table *htab;
+
+ htab = ppc_elf_hash_table (info);
+ if (htab->sbss == NULL)
+ {
+ flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
+
+ if (!htab->elf.dynobj)
+ htab->elf.dynobj = abfd;
+
+ htab->sbss = bfd_make_section_anyway (htab->elf.dynobj, ".sbss");
+ if (htab->sbss == NULL
+ || ! bfd_set_section_flags (htab->elf.dynobj, htab->sbss, flags))
+ return FALSE;
+ }
+
+ *secp = htab->sbss;
+ *valp = sym->st_size;
+ }
+
+ return TRUE;
+}
+\f
+/* Create a special linker section. */
+
+static bfd_boolean
+ppc_elf_create_linker_section (bfd *abfd,
+ struct bfd_link_info *info,
+ flagword flags,
+ elf_linker_section_t *lsect)
+{
+ struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
+ asection *s;
+
+ flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED);
+
+ /* Record the first bfd that needs the special sections. */
+ if (!htab->elf.dynobj)
+ htab->elf.dynobj = abfd;
+
+ /* See if the section already exists. */
+ s = bfd_get_section_by_name (htab->elf.dynobj, lsect->name);
+ if (s == NULL || (s->flags & flags) != flags)
+ {
+ s = bfd_make_section_anyway (htab->elf.dynobj, lsect->name);
+ if (s == NULL
+ || !bfd_set_section_flags (htab->elf.dynobj, s, flags))
+ return FALSE;
+ }
+ lsect->section = s;
+
+ if (bfd_get_section_alignment (htab->elf.dynobj, s) < 2
+ && !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
+ return FALSE;
+
+ s->size = align_power (s->size, 2);
+
+#ifdef DEBUG
+ fprintf (stderr, "Creating section %s, current size = %ld\n",
+ lsect->name, (long) s->size);
+#endif
+
+ return TRUE;
+}
+
+/* Find a linker generated pointer with a given addend and type. */
+
+static elf_linker_section_pointers_t *
+elf_find_pointer_linker_section
+ (elf_linker_section_pointers_t *linker_pointers,
+ bfd_vma addend,
+ elf_linker_section_t *lsect)
+{
+ for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
+ if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
+ return linker_pointers;
+
+ return NULL;
+}
+
+/* Allocate a pointer to live in a linker created section. */
+
+static bfd_boolean
+elf_create_pointer_linker_section (bfd *abfd,
+ struct bfd_link_info *info,
+ elf_linker_section_t *lsect,
+ struct elf_link_hash_entry *h,
+ const Elf_Internal_Rela *rel)
+{
+ elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
+ elf_linker_section_pointers_t *linker_section_ptr;
+ unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
+ bfd_size_type amt;
+
+ BFD_ASSERT (lsect != NULL);
+
+ /* Is this a global symbol? */
+ if (h != NULL)
+ {
+ struct ppc_elf_link_hash_entry *eh;
+
+ /* Has this symbol already been allocated? If so, our work is done. */
+ eh = (struct ppc_elf_link_hash_entry *) h;
+ if (elf_find_pointer_linker_section (eh->linker_section_pointer,
+ rel->r_addend,
+ lsect))
+ return TRUE;
+
+ ptr_linker_section_ptr = &eh->linker_section_pointer;
+ /* Make sure this symbol is output as a dynamic symbol. */
+ if (h->dynindx == -1)
+ {
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
+ return FALSE;
+ }
+ }
+ else
+ {
+ /* Allocation of a pointer to a local symbol. */
+ elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
+
+ /* Allocate a table to hold the local symbols if first time. */
+ if (!ptr)
+ {
+ unsigned int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info;
+
+ amt = num_symbols;
+ amt *= sizeof (elf_linker_section_pointers_t *);
+ ptr = bfd_zalloc (abfd, amt);
+
+ if (!ptr)
+ return FALSE;
+
+ elf_local_ptr_offsets (abfd) = ptr;
+ }
+
+ /* Has this symbol already been allocated? If so, our work is done. */
+ if (elf_find_pointer_linker_section (ptr[r_symndx],
+ rel->r_addend,
+ lsect))
+ return TRUE;
+
+ ptr_linker_section_ptr = &ptr[r_symndx];
+ }
+
+ /* Allocate space for a pointer in the linker section, and allocate
+ a new pointer record from internal memory. */
+ BFD_ASSERT (ptr_linker_section_ptr != NULL);
+ amt = sizeof (elf_linker_section_pointers_t);
+ linker_section_ptr = bfd_alloc (abfd, amt);
+
+ if (!linker_section_ptr)
+ return FALSE;
+
+ linker_section_ptr->next = *ptr_linker_section_ptr;
+ linker_section_ptr->addend = rel->r_addend;
+ linker_section_ptr->lsect = lsect;
+ linker_section_ptr->written_address_p = FALSE;
+ *ptr_linker_section_ptr = linker_section_ptr;
+
+ linker_section_ptr->offset = lsect->section->size;
+ lsect->section->size += 4;
+
+#ifdef DEBUG
+ fprintf (stderr,
+ "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
+ lsect->name, (long) linker_section_ptr->offset,
+ (long) lsect->section->size);
+#endif
+
+ return TRUE;
+}
+
+static bfd_boolean
+update_local_sym_info (bfd *abfd,
+ Elf_Internal_Shdr *symtab_hdr,
+ unsigned long r_symndx,
+ int tls_type)
{
- unsigned int i, type;
+ bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
+ char *local_got_tls_masks;
- for (i = 0; i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); i++)
+ if (local_got_refcounts == NULL)
{
- type = ppc_elf_howto_raw[i].type;
- BFD_ASSERT (type < sizeof (ppc_elf_howto_table) / sizeof (ppc_elf_howto_table[0]));
- ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
+ bfd_size_type size = symtab_hdr->sh_info;
+
+ size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks);
+ local_got_refcounts = bfd_zalloc (abfd, size);
+ if (local_got_refcounts == NULL)
+ return FALSE;
+ elf_local_got_refcounts (abfd) = local_got_refcounts;
}
+
+ local_got_refcounts[r_symndx] += 1;
+ local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info);
+ local_got_tls_masks[r_symndx] |= tls_type;
+ return TRUE;
}
-\f
-/* This function handles relaxing for the PPC with option --mpc860c0[=<n>].
-
- The MPC860, revision C0 or earlier contains a bug in the die.
- If all of the following conditions are true, the next instruction
- to be executed *may* be treated as a no-op.
- 1/ A forward branch is executed.
- 2/ The branch is predicted as not taken.
- 3/ The branch is taken.
- 4/ The branch is located in the last 5 words of a page.
- (The EOP limit is 5 by default but may be specified as any value from 1-10.)
-
- Our software solution is to detect these problematic branches in a
- linker pass and modify them as follows:
- 1/ Unconditional branches - Since these are always predicted taken,
- there is no problem and no action is required.
- 2/ Conditional backward branches - No problem, no action required.
- 3/ Conditional forward branches - Ensure that the "inverse prediction
- bit" is set (ensure it is predicted taken).
- 4/ Conditional register branches - Ensure that the "y bit" is set
- (ensure it is predicted taken).
-*/
-
-/* Sort sections by address. */
-static int
-ppc_elf_sort_rela (arg1, arg2)
- const PTR arg1;
- const PTR arg2;
+static void
+bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
{
- const Elf_Internal_Rela **rela1 = (const Elf_Internal_Rela**) arg1;
- const Elf_Internal_Rela **rela2 = (const Elf_Internal_Rela**) arg2;
-
- /* Sort by offset. */
- return ((*rela1)->r_offset - (*rela2)->r_offset);
+ (*_bfd_error_handler)
+ (_("%B: relocation %s cannot be used when making a shared object"),
+ abfd,
+ ppc_elf_howto_table[r_type]->name);
+ bfd_set_error (bfd_error_bad_value);
}
+/* Look through the relocs for a section during the first phase, and
+ allocate space in the global offset table or procedure linkage
+ table. */
+
static bfd_boolean
-ppc_elf_relax_section (abfd, isec, link_info, again)
- bfd *abfd;
- asection *isec;
- struct bfd_link_info *link_info;
- bfd_boolean *again;
+ppc_elf_check_relocs (bfd *abfd,
+ struct bfd_link_info *info,
+ asection *sec,
+ const Elf_Internal_Rela *relocs)
{
-#define PAGESIZE 0x1000
+ struct ppc_elf_link_hash_table *htab;
+ Elf_Internal_Shdr *symtab_hdr;
+ struct elf_link_hash_entry **sym_hashes;
+ const Elf_Internal_Rela *rel;
+ const Elf_Internal_Rela *rel_end;
+ asection *sreloc;
- bfd_byte *contents = NULL;
- bfd_byte *free_contents = NULL;
- Elf_Internal_Rela *internal_relocs = NULL;
- Elf_Internal_Rela *free_relocs = NULL;
- Elf_Internal_Rela **rela_comb = NULL;
- int comb_curr, comb_count;
+ if (info->relocatable)
+ return TRUE;
- /* We never have to do this more than once per input section. */
- *again = FALSE;
+#ifdef DEBUG
+ _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
+ sec, abfd);
+#endif
- /* If needed, initialize this section's cooked size. */
- if (isec->_cooked_size == 0)
- isec->_cooked_size = isec->_raw_size;
+ /* Initialize howto table if not already done. */
+ if (!ppc_elf_howto_table[R_PPC_ADDR32])
+ ppc_elf_howto_init ();
+
+ htab = ppc_elf_hash_table (info);
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ sym_hashes = elf_sym_hashes (abfd);
+ sreloc = NULL;
- /* We're only interested in text sections which overlap the
- troublesome area at the end of a page. */
- if (link_info->mpc860c0 && (isec->flags & SEC_CODE) && isec->_cooked_size)
+ rel_end = relocs + sec->reloc_count;
+ for (rel = relocs; rel < rel_end; rel++)
{
- bfd_vma dot, end_page, end_section;
- bfd_boolean section_modified;
+ unsigned long r_symndx;
+ enum elf_ppc_reloc_type r_type;
+ struct elf_link_hash_entry *h;
+ int tls_type = 0;
- /* Get the section contents. */
- /* Get cached copy if it exists. */
- if (elf_section_data (isec)->this_hdr.contents != NULL)
- contents = elf_section_data (isec)->this_hdr.contents;
+ r_symndx = ELF32_R_SYM (rel->r_info);
+ if (r_symndx < symtab_hdr->sh_info)
+ h = NULL;
else
- {
- /* Go get them off disk. */
- contents = (bfd_byte *) bfd_malloc (isec->_raw_size);
- if (contents == NULL)
- goto error_return;
- free_contents = contents;
-
- if (! bfd_get_section_contents (abfd, isec, contents,
- (file_ptr) 0, isec->_raw_size))
- goto error_return;
- }
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- comb_curr = 0;
- comb_count = 0;
- if (isec->reloc_count)
+ /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
+ This shows up in particular in an R_PPC_ADDR32 in the eabi
+ startup code. */
+ if (h && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
{
- unsigned n;
- bfd_size_type amt;
-
- /* Get a copy of the native relocations. */
- internal_relocs = _bfd_elf32_link_read_relocs (
- abfd, isec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
- link_info->keep_memory);
- if (internal_relocs == NULL)
- goto error_return;
- if (! link_info->keep_memory)
- free_relocs = internal_relocs;
-
- /* Setup a faster access method for the reloc info we need. */
- amt = isec->reloc_count;
- amt *= sizeof (Elf_Internal_Rela*);
- rela_comb = (Elf_Internal_Rela**) bfd_malloc (amt);
- if (rela_comb == NULL)
- goto error_return;
- for (n = 0; n < isec->reloc_count; ++n)
- {
- long r_type;
-
- r_type = ELF32_R_TYPE (internal_relocs[n].r_info);
- if (r_type < 0 || r_type >= (int) R_PPC_max)
- goto error_return;
-
- /* Prologue constants are sometimes present in the ".text"
- sections and they can be identified by their associated relocation.
- We don't want to process those words and some others which
- can also be identified by their relocations. However, not all
- conditional branches will have a relocation so we will
- only ignore words that 1) have a reloc, and 2) the reloc
- is not applicable to a conditional branch.
- The array rela_comb is built here for use in the EOP scan loop. */
- switch (r_type)
- {
- case R_PPC_ADDR14_BRNTAKEN: /* absolute, predicted not taken */
- case R_PPC_REL14: /* relative cond. br. */
- case R_PPC_REL14_BRNTAKEN: /* rel. cond. br., predicted not taken */
- /* We should check the instruction. */
- break;
- default:
- /* The word is not a conditional branch - ignore it. */
- rela_comb[comb_count++] = &internal_relocs[n];
- break;
- }
- }
- if (comb_count > 1)
- qsort (rela_comb, (size_t) comb_count, sizeof (int), ppc_elf_sort_rela);
+ if (htab->got == NULL)
+ {
+ if (htab->elf.dynobj == NULL)
+ htab->elf.dynobj = abfd;
+ if (!ppc_elf_create_got (htab->elf.dynobj, info))
+ return FALSE;
+ }
}
- /* Enumerate each EOP region that overlaps this section. */
- end_section = isec->vma + isec->_cooked_size;
- dot = end_page = (isec->vma | (PAGESIZE - 1)) + 1;
- dot -= link_info->mpc860c0;
- section_modified = FALSE;
- if (dot < isec->vma) /* Increment the start position if this section */
- dot = isec->vma; /* begins in the middle of its first EOP region. */
- for (;
- dot < end_section;
- dot += PAGESIZE, end_page += PAGESIZE)
- {
-
- /* Check each word in this EOP region. */
- for (; dot < end_page; dot += 4)
- {
- bfd_vma isec_offset;
- unsigned long insn;
- bfd_boolean skip, modified;
-
- /* Don't process this word if there is a relocation for it and
- the relocation indicates the word is not a conditional branch. */
- skip = FALSE;
- isec_offset = dot - isec->vma;
- for (; comb_curr<comb_count; ++comb_curr)
- {
- bfd_vma r_offset;
-
- r_offset = rela_comb[comb_curr]->r_offset;
- if (r_offset >= isec_offset)
- {
- if (r_offset == isec_offset) skip = TRUE;
- break;
- }
- }
- if (skip) continue;
-
- /* Check the current word for a problematic conditional branch. */
-#define BO0(insn) ((insn) & 0x02000000)
-#define BO2(insn) ((insn) & 0x00800000)
-#define BO4(insn) ((insn) & 0x00200000)
- insn = (unsigned long) bfd_get_32 (abfd, contents + isec_offset);
- modified = FALSE;
- if ((insn & 0xFc000000) == 0x40000000)
- {
- /* Instruction is BCx */
- if ((!BO0(insn) || !BO2(insn)) && !BO4(insn))
- {
- bfd_vma target;
- /* This branch is predicted as "normal".
- If this is a forward branch, it is problematic. */
-
- target = insn & 0x0000Fffc; /*extract*/
- target = (target ^ 0x8000) - 0x8000; /*sign extend*/
- if ((insn & 0x00000002) == 0)
- target += dot; /*convert to abs*/
- if (target > dot)
- {
- insn |= 0x00200000; /* set the prediction bit */
- modified = TRUE;
- }
- }
- }
- else if ((insn & 0xFc00Fffe) == 0x4c000420)
- {
- /* Instruction is BCCTRx */
- if ((!BO0(insn) || !BO2(insn)) && !BO4(insn))
- {
- /* This branch is predicted as not-taken.
- If this is a forward branch, it is problematic.
- Since we can't tell statically if it will branch forward,
- always set the prediction bit. */
- insn |= 0x00200000; /* set the prediction bit */
- modified = TRUE;
- }
- }
- else if ((insn & 0xFc00Fffe) == 0x4c000020)
- {
- /* Instruction is BCLRx */
- if ((!BO0(insn) || !BO2(insn)) && !BO4(insn))
- {
- /* This branch is predicted as not-taken.
- If this is a forward branch, it is problematic.
- Since we can't tell statically if it will branch forward,
- always set the prediction bit. */
- insn |= 0x00200000; /* set the prediction bit */
- modified = TRUE;
- }
- }
-#undef BO0
-#undef BO2
-#undef BO4
- if (modified)
- {
- bfd_put_32 (abfd, (bfd_vma) insn, contents + isec_offset);
- section_modified = TRUE;
- }
- }
- }
- if (section_modified)
+ r_type = ELF32_R_TYPE (rel->r_info);
+ switch (r_type)
{
- elf_section_data (isec)->this_hdr.contents = contents;
- free_contents = NULL;
- }
- }
+ case R_PPC_GOT_TLSLD16:
+ case R_PPC_GOT_TLSLD16_LO:
+ case R_PPC_GOT_TLSLD16_HI:
+ case R_PPC_GOT_TLSLD16_HA:
+ htab->tlsld_got.refcount += 1;
+ tls_type = TLS_TLS | TLS_LD;
+ goto dogottls;
+
+ case R_PPC_GOT_TLSGD16:
+ case R_PPC_GOT_TLSGD16_LO:
+ case R_PPC_GOT_TLSGD16_HI:
+ case R_PPC_GOT_TLSGD16_HA:
+ tls_type = TLS_TLS | TLS_GD;
+ goto dogottls;
+
+ case R_PPC_GOT_TPREL16:
+ case R_PPC_GOT_TPREL16_LO:
+ case R_PPC_GOT_TPREL16_HI:
+ case R_PPC_GOT_TPREL16_HA:
+ if (info->shared)
+ info->flags |= DF_STATIC_TLS;
+ tls_type = TLS_TLS | TLS_TPREL;
+ goto dogottls;
+
+ case R_PPC_GOT_DTPREL16:
+ case R_PPC_GOT_DTPREL16_LO:
+ case R_PPC_GOT_DTPREL16_HI:
+ case R_PPC_GOT_DTPREL16_HA:
+ tls_type = TLS_TLS | TLS_DTPREL;
+ dogottls:
+ sec->has_tls_reloc = 1;
+ /* Fall thru */
+
+ /* GOT16 relocations */
+ case R_PPC_GOT16:
+ case R_PPC_GOT16_LO:
+ case R_PPC_GOT16_HI:
+ case R_PPC_GOT16_HA:
+ /* This symbol requires a global offset table entry. */
+ if (htab->got == NULL)
+ {
+ if (htab->elf.dynobj == NULL)
+ htab->elf.dynobj = abfd;
+ if (!ppc_elf_create_got (htab->elf.dynobj, info))
+ return FALSE;
+ }
+ if (h != NULL)
+ {
+ h->got.refcount += 1;
+ ppc_elf_hash_entry (h)->tls_mask |= tls_type;
+ }
+ else
+ /* This is a global offset table entry for a local symbol. */
+ if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
+ return FALSE;
+ break;
- if (rela_comb != NULL)
- {
- free (rela_comb);
- rela_comb = NULL;
- }
+ /* Indirect .sdata relocation. */
+ case R_PPC_EMB_SDAI16:
+ if (info->shared)
+ {
+ bad_shared_reloc (abfd, r_type);
+ return FALSE;
+ }
+ if (htab->sdata[0].section == NULL
+ && !ppc_elf_create_linker_section (abfd, info, 0,
+ &htab->sdata[0]))
+ return FALSE;
+ if (!elf_create_pointer_linker_section (abfd, info,
+ &htab->sdata[0], h, rel))
+ return FALSE;
+ break;
- if (free_relocs != NULL)
- {
- free (free_relocs);
- free_relocs = NULL;
- }
+ /* Indirect .sdata2 relocation. */
+ case R_PPC_EMB_SDA2I16:
+ if (info->shared)
+ {
+ bad_shared_reloc (abfd, r_type);
+ return FALSE;
+ }
+ if (htab->sdata[1].section == NULL
+ && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
+ &htab->sdata[1]))
+ return FALSE;
+ if (!elf_create_pointer_linker_section (abfd, info,
+ &htab->sdata[1], h, rel))
+ return FALSE;
+ break;
- if (free_contents != NULL)
- {
- if (! link_info->keep_memory)
- free (free_contents);
- else
- {
- /* Cache the section contents for elf_link_input_bfd. */
- elf_section_data (isec)->this_hdr.contents = contents;
- }
- free_contents = NULL;
- }
+ case R_PPC_SDAREL16:
+ case R_PPC_EMB_SDA2REL:
+ case R_PPC_EMB_SDA21:
+ case R_PPC_EMB_RELSDA:
+ case R_PPC_EMB_NADDR32:
+ case R_PPC_EMB_NADDR16:
+ case R_PPC_EMB_NADDR16_LO:
+ case R_PPC_EMB_NADDR16_HI:
+ case R_PPC_EMB_NADDR16_HA:
+ if (info->shared)
+ {
+ bad_shared_reloc (abfd, r_type);
+ return FALSE;
+ }
+ break;
- return TRUE;
+ case R_PPC_PLT32:
+ case R_PPC_PLTREL24:
+ case R_PPC_PLTREL32:
+ case R_PPC_PLT16_LO:
+ case R_PPC_PLT16_HI:
+ case R_PPC_PLT16_HA:
+#ifdef DEBUG
+ fprintf (stderr, "Reloc requires a PLT entry\n");
+#endif
+ /* This symbol requires a procedure linkage table entry. We
+ actually build the entry in finish_dynamic_symbol,
+ because this might be a case of linking PIC code without
+ linking in any dynamic objects, in which case we don't
+ need to generate a procedure linkage table after all. */
-error_return:
- if (rela_comb != NULL)
- free (rela_comb);
- if (free_relocs != NULL)
- free (free_relocs);
- if (free_contents != NULL)
- free (free_contents);
- return FALSE;
-}
-\f
-static reloc_howto_type *
-ppc_elf_reloc_type_lookup (abfd, code)
- bfd *abfd ATTRIBUTE_UNUSED;
- bfd_reloc_code_real_type code;
-{
- enum elf_ppc_reloc_type ppc_reloc = R_PPC_NONE;
+ if (h == NULL)
+ {
+ /* It does not make sense to have a procedure linkage
+ table entry for a local symbol. */
+ (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
+ "local symbol"),
+ abfd,
+ sec,
+ (long) rel->r_offset,
+ ppc_elf_howto_table[r_type]->name);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
- if (!ppc_elf_howto_table[R_PPC_ADDR32])
- /* Initialize howto table if needed. */
- ppc_elf_howto_init ();
+ h->needs_plt = 1;
+ h->plt.refcount++;
+ break;
- switch ((int) code)
- {
- default:
- return (reloc_howto_type *) NULL;
-
- case BFD_RELOC_NONE: ppc_reloc = R_PPC_NONE; break;
- case BFD_RELOC_32: ppc_reloc = R_PPC_ADDR32; break;
- case BFD_RELOC_PPC_BA26: ppc_reloc = R_PPC_ADDR24; break;
- case BFD_RELOC_16: ppc_reloc = R_PPC_ADDR16; break;
- case BFD_RELOC_LO16: ppc_reloc = R_PPC_ADDR16_LO; break;
- case BFD_RELOC_HI16: ppc_reloc = R_PPC_ADDR16_HI; break;
- case BFD_RELOC_HI16_S: ppc_reloc = R_PPC_ADDR16_HA; break;
- case BFD_RELOC_PPC_BA16: ppc_reloc = R_PPC_ADDR14; break;
- case BFD_RELOC_PPC_BA16_BRTAKEN: ppc_reloc = R_PPC_ADDR14_BRTAKEN; break;
- case BFD_RELOC_PPC_BA16_BRNTAKEN: ppc_reloc = R_PPC_ADDR14_BRNTAKEN; break;
- case BFD_RELOC_PPC_B26: ppc_reloc = R_PPC_REL24; break;
- case BFD_RELOC_PPC_B16: ppc_reloc = R_PPC_REL14; break;
- case BFD_RELOC_PPC_B16_BRTAKEN: ppc_reloc = R_PPC_REL14_BRTAKEN; break;
- case BFD_RELOC_PPC_B16_BRNTAKEN: ppc_reloc = R_PPC_REL14_BRNTAKEN; break;
- case BFD_RELOC_16_GOTOFF: ppc_reloc = R_PPC_GOT16; break;
- case BFD_RELOC_LO16_GOTOFF: ppc_reloc = R_PPC_GOT16_LO; break;
- case BFD_RELOC_HI16_GOTOFF: ppc_reloc = R_PPC_GOT16_HI; break;
- case BFD_RELOC_HI16_S_GOTOFF: ppc_reloc = R_PPC_GOT16_HA; break;
- case BFD_RELOC_24_PLT_PCREL: ppc_reloc = R_PPC_PLTREL24; break;
- case BFD_RELOC_PPC_COPY: ppc_reloc = R_PPC_COPY; break;
- case BFD_RELOC_PPC_GLOB_DAT: ppc_reloc = R_PPC_GLOB_DAT; break;
- case BFD_RELOC_PPC_LOCAL24PC: ppc_reloc = R_PPC_LOCAL24PC; break;
- case BFD_RELOC_32_PCREL: ppc_reloc = R_PPC_REL32; break;
- case BFD_RELOC_32_PLTOFF: ppc_reloc = R_PPC_PLT32; break;
- case BFD_RELOC_32_PLT_PCREL: ppc_reloc = R_PPC_PLTREL32; break;
- case BFD_RELOC_LO16_PLTOFF: ppc_reloc = R_PPC_PLT16_LO; break;
- case BFD_RELOC_HI16_PLTOFF: ppc_reloc = R_PPC_PLT16_HI; break;
- case BFD_RELOC_HI16_S_PLTOFF: ppc_reloc = R_PPC_PLT16_HA; break;
- case BFD_RELOC_GPREL16: ppc_reloc = R_PPC_SDAREL16; break;
- case BFD_RELOC_16_BASEREL: ppc_reloc = R_PPC_SECTOFF; break;
- case BFD_RELOC_LO16_BASEREL: ppc_reloc = R_PPC_SECTOFF_LO; break;
- case BFD_RELOC_HI16_BASEREL: ppc_reloc = R_PPC_SECTOFF_HI; break;
- case BFD_RELOC_HI16_S_BASEREL: ppc_reloc = R_PPC_SECTOFF_HA; break;
- case BFD_RELOC_CTOR: ppc_reloc = R_PPC_ADDR32; break;
- case BFD_RELOC_PPC_TOC16: ppc_reloc = R_PPC_TOC16; break;
- case BFD_RELOC_PPC_EMB_NADDR32: ppc_reloc = R_PPC_EMB_NADDR32; break;
- case BFD_RELOC_PPC_EMB_NADDR16: ppc_reloc = R_PPC_EMB_NADDR16; break;
- case BFD_RELOC_PPC_EMB_NADDR16_LO: ppc_reloc = R_PPC_EMB_NADDR16_LO; break;
- case BFD_RELOC_PPC_EMB_NADDR16_HI: ppc_reloc = R_PPC_EMB_NADDR16_HI; break;
- case BFD_RELOC_PPC_EMB_NADDR16_HA: ppc_reloc = R_PPC_EMB_NADDR16_HA; break;
- case BFD_RELOC_PPC_EMB_SDAI16: ppc_reloc = R_PPC_EMB_SDAI16; break;
- case BFD_RELOC_PPC_EMB_SDA2I16: ppc_reloc = R_PPC_EMB_SDA2I16; break;
- case BFD_RELOC_PPC_EMB_SDA2REL: ppc_reloc = R_PPC_EMB_SDA2REL; break;
- case BFD_RELOC_PPC_EMB_SDA21: ppc_reloc = R_PPC_EMB_SDA21; break;
- case BFD_RELOC_PPC_EMB_MRKREF: ppc_reloc = R_PPC_EMB_MRKREF; break;
- case BFD_RELOC_PPC_EMB_RELSEC16: ppc_reloc = R_PPC_EMB_RELSEC16; break;
- case BFD_RELOC_PPC_EMB_RELST_LO: ppc_reloc = R_PPC_EMB_RELST_LO; break;
- case BFD_RELOC_PPC_EMB_RELST_HI: ppc_reloc = R_PPC_EMB_RELST_HI; break;
- case BFD_RELOC_PPC_EMB_RELST_HA: ppc_reloc = R_PPC_EMB_RELST_HA; break;
- case BFD_RELOC_PPC_EMB_BIT_FLD: ppc_reloc = R_PPC_EMB_BIT_FLD; break;
- case BFD_RELOC_PPC_EMB_RELSDA: ppc_reloc = R_PPC_EMB_RELSDA; break;
- case BFD_RELOC_VTABLE_INHERIT: ppc_reloc = R_PPC_GNU_VTINHERIT; break;
- case BFD_RELOC_VTABLE_ENTRY: ppc_reloc = R_PPC_GNU_VTENTRY; break;
- }
+ /* The following relocations don't need to propagate the
+ relocation if linking a shared object since they are
+ section relative. */
+ case R_PPC_SECTOFF:
+ case R_PPC_SECTOFF_LO:
+ case R_PPC_SECTOFF_HI:
+ case R_PPC_SECTOFF_HA:
+ case R_PPC_DTPREL16:
+ case R_PPC_DTPREL16_LO:
+ case R_PPC_DTPREL16_HI:
+ case R_PPC_DTPREL16_HA:
+ case R_PPC_TOC16:
+ break;
- return ppc_elf_howto_table[(int) ppc_reloc];
-};
+ /* This are just markers. */
+ case R_PPC_TLS:
+ case R_PPC_EMB_MRKREF:
+ case R_PPC_NONE:
+ case R_PPC_max:
+ break;
-/* Set the howto pointer for a PowerPC ELF reloc. */
+ /* These should only appear in dynamic objects. */
+ case R_PPC_COPY:
+ case R_PPC_GLOB_DAT:
+ case R_PPC_JMP_SLOT:
+ case R_PPC_RELATIVE:
+ break;
-static void
-ppc_elf_info_to_howto (abfd, cache_ptr, dst)
- bfd *abfd ATTRIBUTE_UNUSED;
- arelent *cache_ptr;
- Elf_Internal_Rela *dst;
-{
- if (!ppc_elf_howto_table[R_PPC_ADDR32])
- /* Initialize howto table if needed. */
- ppc_elf_howto_init ();
+ /* These aren't handled yet. We'll report an error later. */
+ case R_PPC_ADDR30:
+ case R_PPC_EMB_RELSEC16:
+ case R_PPC_EMB_RELST_LO:
+ case R_PPC_EMB_RELST_HI:
+ case R_PPC_EMB_RELST_HA:
+ case R_PPC_EMB_BIT_FLD:
+ break;
- BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
- cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
-}
+ /* This refers only to functions defined in the shared library. */
+ case R_PPC_LOCAL24PC:
+ break;
-/* Handle the R_PPC_ADDR16_HA reloc. */
+ /* This relocation describes the C++ object vtable hierarchy.
+ Reconstruct it for later use during GC. */
+ case R_PPC_GNU_VTINHERIT:
+ if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
+ return FALSE;
+ break;
-static bfd_reloc_status_type
-ppc_elf_addr16_ha_reloc (abfd, reloc_entry, symbol, data, input_section,
- output_bfd, error_message)
- bfd *abfd ATTRIBUTE_UNUSED;
- arelent *reloc_entry;
- asymbol *symbol;
- PTR data ATTRIBUTE_UNUSED;
- asection *input_section;
- bfd *output_bfd;
- char **error_message ATTRIBUTE_UNUSED;
-{
- bfd_vma relocation;
+ /* This relocation describes which C++ vtable entries are actually
+ used. Record for later use during GC. */
+ case R_PPC_GNU_VTENTRY:
+ if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
+ return FALSE;
+ break;
- if (output_bfd != NULL)
- {
- reloc_entry->address += input_section->output_offset;
- return bfd_reloc_ok;
- }
+ /* We shouldn't really be seeing these. */
+ case R_PPC_TPREL32:
+ if (info->shared)
+ info->flags |= DF_STATIC_TLS;
+ goto dodyn;
+
+ /* Nor these. */
+ case R_PPC_DTPMOD32:
+ case R_PPC_DTPREL32:
+ goto dodyn;
+
+ case R_PPC_TPREL16:
+ case R_PPC_TPREL16_LO:
+ case R_PPC_TPREL16_HI:
+ case R_PPC_TPREL16_HA:
+ if (info->shared)
+ info->flags |= DF_STATIC_TLS;
+ goto dodyn;
- if (reloc_entry->address > input_section->_cooked_size)
- return bfd_reloc_outofrange;
+ /* When creating a shared object, we must copy these
+ relocs into the output file. We create a reloc
+ section in dynobj and make room for the reloc. */
+ case R_PPC_REL24:
+ case R_PPC_REL14:
+ case R_PPC_REL14_BRTAKEN:
+ case R_PPC_REL14_BRNTAKEN:
+ case R_PPC_REL32:
+ if (h == NULL
+ || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
+ break;
+ /* fall through */
- if (bfd_is_com_section (symbol->section))
- relocation = 0;
- else
- relocation = symbol->value;
+ case R_PPC_ADDR32:
+ case R_PPC_ADDR24:
+ case R_PPC_ADDR16:
+ case R_PPC_ADDR16_LO:
+ case R_PPC_ADDR16_HI:
+ case R_PPC_ADDR16_HA:
+ case R_PPC_ADDR14:
+ case R_PPC_ADDR14_BRTAKEN:
+ case R_PPC_ADDR14_BRNTAKEN:
+ case R_PPC_UADDR32:
+ case R_PPC_UADDR16:
+ if (h != NULL && !info->shared)
+ {
+ /* We may need a plt entry if the symbol turns out to be
+ a function defined in a dynamic object. */
+ h->plt.refcount++;
- relocation += symbol->section->output_section->vma;
- relocation += symbol->section->output_offset;
- relocation += reloc_entry->addend;
+ /* We may need a copy reloc too. */
+ h->non_got_ref = 1;
+ }
- reloc_entry->addend += (relocation & 0x8000) << 1;
+ dodyn:
+ /* If we are creating a shared library, and this is a reloc
+ against a global symbol, or a non PC relative reloc
+ against a local symbol, then we need to copy the reloc
+ into the shared library. However, if we are linking with
+ -Bsymbolic, we do not need to copy a reloc against a
+ global symbol which is defined in an object we are
+ including in the link (i.e., DEF_REGULAR is set). At
+ this point we have not seen all the input files, so it is
+ possible that DEF_REGULAR is not set now but will be set
+ later (it is never cleared). In case of a weak definition,
+ DEF_REGULAR may be cleared later by a strong definition in
+ a shared library. We account for that possibility below by
+ storing information in the dyn_relocs field of the hash
+ table entry. A similar situation occurs when creating
+ shared libraries and symbol visibility changes render the
+ symbol local.
+
+ If on the other hand, we are creating an executable, we
+ may need to keep relocations for symbols satisfied by a
+ dynamic library if we manage to avoid copy relocs for the
+ symbol. */
+ if ((info->shared
+ && (MUST_BE_DYN_RELOC (r_type)
+ || (h != NULL
+ && (! info->symbolic
+ || h->root.type == bfd_link_hash_defweak
+ || !h->def_regular))))
+ || (ELIMINATE_COPY_RELOCS
+ && !info->shared
+ && (sec->flags & SEC_ALLOC) != 0
+ && h != NULL
+ && (h->root.type == bfd_link_hash_defweak
+ || !h->def_regular)))
+ {
+ struct ppc_elf_dyn_relocs *p;
+ struct ppc_elf_dyn_relocs **head;
- return bfd_reloc_continue;
-}
+#ifdef DEBUG
+ fprintf (stderr,
+ "ppc_elf_check_relocs needs to "
+ "create relocation for %s\n",
+ (h && h->root.root.string
+ ? h->root.root.string : "<unknown>"));
+#endif
+ if (sreloc == NULL)
+ {
+ const char *name;
+
+ name = (bfd_elf_string_from_elf_section
+ (abfd,
+ elf_elfheader (abfd)->e_shstrndx,
+ elf_section_data (sec)->rel_hdr.sh_name));
+ if (name == NULL)
+ return FALSE;
+
+ BFD_ASSERT (strncmp (name, ".rela", 5) == 0
+ && strcmp (bfd_get_section_name (abfd, sec),
+ name + 5) == 0);
+
+ if (htab->elf.dynobj == NULL)
+ htab->elf.dynobj = abfd;
+ sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
+ if (sreloc == NULL)
+ {
+ flagword flags;
+
+ sreloc = bfd_make_section (htab->elf.dynobj, name);
+ flags = (SEC_HAS_CONTENTS | SEC_READONLY
+ | SEC_IN_MEMORY | SEC_LINKER_CREATED);
+ if ((sec->flags & SEC_ALLOC) != 0)
+ flags |= SEC_ALLOC | SEC_LOAD;
+ if (sreloc == NULL
+ || ! bfd_set_section_flags (htab->elf.dynobj,
+ sreloc, flags)
+ || ! bfd_set_section_alignment (htab->elf.dynobj,
+ sreloc, 2))
+ return FALSE;
+ }
+ elf_section_data (sec)->sreloc = sreloc;
+ }
+
+ /* If this is a global symbol, we count the number of
+ relocations we need for this symbol. */
+ if (h != NULL)
+ {
+ head = &ppc_elf_hash_entry (h)->dyn_relocs;
+ }
+ else
+ {
+ /* Track dynamic relocs needed for local syms too.
+ We really need local syms available to do this
+ easily. Oh well. */
+
+ asection *s;
+ s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
+ sec, r_symndx);
+ if (s == NULL)
+ return FALSE;
+
+ head = ((struct ppc_elf_dyn_relocs **)
+ &elf_section_data (s)->local_dynrel);
+ }
-/* Fix bad default arch selected for a 32 bit input bfd when the
- default is 64 bit. */
+ p = *head;
+ if (p == NULL || p->sec != sec)
+ {
+ p = bfd_alloc (htab->elf.dynobj, sizeof *p);
+ if (p == NULL)
+ return FALSE;
+ p->next = *head;
+ *head = p;
+ p->sec = sec;
+ p->count = 0;
+ p->pc_count = 0;
+ }
-static bfd_boolean
-ppc_elf_object_p (abfd)
- bfd *abfd;
-{
- if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
- {
- Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
+ p->count += 1;
+ if (!MUST_BE_DYN_RELOC (r_type))
+ p->pc_count += 1;
+ }
- if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
- {
- /* Relies on arch after 64 bit default being 32 bit default. */
- abfd->arch_info = abfd->arch_info->next;
- BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
+ break;
}
}
- return TRUE;
-}
-
-/* Function to set whether a module needs the -mrelocatable bit set. */
-
-static bfd_boolean
-ppc_elf_set_private_flags (abfd, flags)
- bfd *abfd;
- flagword flags;
-{
- BFD_ASSERT (!elf_flags_init (abfd)
- || elf_elfheader (abfd)->e_flags == flags);
- elf_elfheader (abfd)->e_flags = flags;
- elf_flags_init (abfd) = TRUE;
return TRUE;
}
-
+\f
/* Merge backend specific data from an object file to the output
- object file when linking */
+ object file when linking. */
+
static bfd_boolean
-ppc_elf_merge_private_bfd_data (ibfd, obfd)
- bfd *ibfd;
- bfd *obfd;
+ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
{
flagword old_flags;
flagword new_flags;
bfd_boolean error;
- /* Check if we have the same endianess */
+ if (!is_ppc_elf_target (ibfd->xvec)
+ || !is_ppc_elf_target (obfd->xvec))
+ return TRUE;
+
+ /* Check if we have the same endianess. */
if (! _bfd_generic_verify_endian_match (ibfd, obfd))
return FALSE;
- if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
- || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
- return TRUE;
-
new_flags = elf_elfheader (ibfd)->e_flags;
old_flags = elf_elfheader (obfd)->e_flags;
- if (!elf_flags_init (obfd)) /* First call, no flags set */
+ if (!elf_flags_init (obfd))
{
+ /* First call, no flags set. */
elf_flags_init (obfd) = TRUE;
elf_elfheader (obfd)->e_flags = new_flags;
}
- else if (new_flags == old_flags) /* Compatible flags are ok */
+ /* Compatible flags are ok. */
+ else if (new_flags == old_flags)
;
- else /* Incompatible flags */
+ /* Incompatible flags. */
+ else
{
- /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib to be linked
- with either. */
+ /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
+ to be linked with either. */
error = FALSE;
if ((new_flags & EF_PPC_RELOCATABLE) != 0
&& (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
{
error = TRUE;
(*_bfd_error_handler)
- (_("%s: compiled with -mrelocatable and linked with modules compiled normally"),
- bfd_archive_filename (ibfd));
+ (_("%B: compiled with -mrelocatable and linked with "
+ "modules compiled normally"), ibfd);
}
else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
&& (old_flags & EF_PPC_RELOCATABLE) != 0)
{
error = TRUE;
(*_bfd_error_handler)
- (_("%s: compiled normally and linked with modules compiled with -mrelocatable"),
- bfd_archive_filename (ibfd));
+ (_("%B: compiled normally and linked with "
+ "modules compiled with -mrelocatable"), ibfd);
}
/* The output is -mrelocatable-lib iff both the input files are. */
elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
/* The output is -mrelocatable iff it can't be -mrelocatable-lib,
- but each input file is either -mrelocatable or -mrelocatable-lib. */
+ but each input file is either -mrelocatable or -mrelocatable-lib. */
if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
&& (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
&& (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
- /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if any module uses it */
+ /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
+ any module uses it. */
elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
- new_flags &= ~ (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
- old_flags &= ~ (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
+ new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
+ old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
- /* Warn about any other mismatches */
+ /* Warn about any other mismatches. */
if (new_flags != old_flags)
{
error = TRUE;
(*_bfd_error_handler)
- (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
- bfd_archive_filename (ibfd), (long) new_flags, (long) old_flags);
+ (_("%B: uses different e_flags (0x%lx) fields "
+ "than previous modules (0x%lx)"),
+ ibfd, (long) new_flags, (long) old_flags);
}
if (error)
return TRUE;
}
\f
-/* Handle a PowerPC specific section when reading an object file. This
- is called when elfcode.h finds a section with an unknown type. */
+/* Return the section that should be marked against GC for a given
+ relocation. */
-static bfd_boolean
-ppc_elf_section_from_shdr (abfd, hdr, name)
- bfd *abfd;
- Elf_Internal_Shdr *hdr;
- const char *name;
+static asection *
+ppc_elf_gc_mark_hook (asection *sec,
+ struct bfd_link_info *info ATTRIBUTE_UNUSED,
+ Elf_Internal_Rela *rel,
+ struct elf_link_hash_entry *h,
+ Elf_Internal_Sym *sym)
{
- asection *newsect;
- flagword flags;
+ if (h != NULL)
+ {
+ switch (ELF32_R_TYPE (rel->r_info))
+ {
+ case R_PPC_GNU_VTINHERIT:
+ case R_PPC_GNU_VTENTRY:
+ break;
- if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
- return FALSE;
+ default:
+ switch (h->root.type)
+ {
+ case bfd_link_hash_defined:
+ case bfd_link_hash_defweak:
+ return h->root.u.def.section;
- newsect = hdr->bfd_section;
- flags = bfd_get_section_flags (abfd, newsect);
- if (hdr->sh_flags & SHF_EXCLUDE)
- flags |= SEC_EXCLUDE;
+ case bfd_link_hash_common:
+ return h->root.u.c.p->section;
- if (hdr->sh_type == SHT_ORDERED)
- flags |= SEC_SORT_ENTRIES;
+ default:
+ break;
+ }
+ }
+ }
+ else
+ return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
- bfd_set_section_flags (abfd, newsect, flags);
- return TRUE;
+ return NULL;
}
-\f
-/* Set up any other section flags and such that may be necessary. */
+
+/* Update the got, plt and dynamic reloc reference counts for the
+ section being removed. */
static bfd_boolean
-ppc_elf_fake_sections (abfd, shdr, asect)
- bfd *abfd ATTRIBUTE_UNUSED;
- Elf_Internal_Shdr *shdr;
- asection *asect;
+ppc_elf_gc_sweep_hook (bfd *abfd,
+ struct bfd_link_info *info,
+ asection *sec,
+ const Elf_Internal_Rela *relocs)
{
- if ((asect->flags & SEC_EXCLUDE) != 0)
- shdr->sh_flags |= SHF_EXCLUDE;
-
- if ((asect->flags & SEC_SORT_ENTRIES) != 0)
- shdr->sh_type = SHT_ORDERED;
+ struct ppc_elf_link_hash_table *htab;
+ Elf_Internal_Shdr *symtab_hdr;
+ struct elf_link_hash_entry **sym_hashes;
+ bfd_signed_vma *local_got_refcounts;
+ const Elf_Internal_Rela *rel, *relend;
- return TRUE;
-}
-\f
-/* Create a special linker section */
-static elf_linker_section_t *
-ppc_elf_create_linker_section (abfd, info, which)
- bfd *abfd;
- struct bfd_link_info *info;
- enum elf_linker_section_enum which;
-{
- bfd *dynobj = elf_hash_table (info)->dynobj;
- elf_linker_section_t *lsect;
+ elf_section_data (sec)->local_dynrel = NULL;
- /* Record the first bfd section that needs the special section */
- if (!dynobj)
- dynobj = elf_hash_table (info)->dynobj = abfd;
+ htab = ppc_elf_hash_table (info);
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ sym_hashes = elf_sym_hashes (abfd);
+ local_got_refcounts = elf_local_got_refcounts (abfd);
- /* If this is the first time, create the section */
- lsect = elf_linker_section (dynobj, which);
- if (!lsect)
+ relend = relocs + sec->reloc_count;
+ for (rel = relocs; rel < relend; rel++)
{
- elf_linker_section_t defaults;
- static elf_linker_section_t zero_section;
-
- defaults = zero_section;
- defaults.which = which;
- defaults.hole_written_p = FALSE;
- defaults.alignment = 2;
-
- /* Both of these sections are (technically) created by the user
- putting data in them, so they shouldn't be marked
- SEC_LINKER_CREATED.
-
- The linker creates them so it has somewhere to attach their
- respective symbols. In fact, if they were empty it would
- be OK to leave the symbol set to 0 (or any random number), because
- the appropriate register should never be used. */
- defaults.flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
- | SEC_IN_MEMORY);
-
- switch (which)
+ unsigned long r_symndx;
+ enum elf_ppc_reloc_type r_type;
+ struct elf_link_hash_entry *h = NULL;
+
+ r_symndx = ELF32_R_SYM (rel->r_info);
+ if (r_symndx >= symtab_hdr->sh_info)
{
- default:
- (*_bfd_error_handler) (_("%s: Unknown special linker type %d"),
- bfd_get_filename (abfd),
- (int) which);
+ struct ppc_elf_dyn_relocs **pp, *p;
+ struct ppc_elf_link_hash_entry *eh;
- bfd_set_error (bfd_error_bad_value);
- return (elf_linker_section_t *) 0;
-
- case LINKER_SECTION_SDATA: /* .sdata/.sbss section */
- defaults.name = ".sdata";
- defaults.rel_name = ".rela.sdata";
- defaults.bss_name = ".sbss";
- defaults.sym_name = "_SDA_BASE_";
- defaults.sym_offset = 32768;
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ while (h->root.type == bfd_link_hash_indirect
+ || h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+ eh = (struct ppc_elf_link_hash_entry *) h;
+
+ for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
+ if (p->sec == sec)
+ {
+ /* Everything must go for SEC. */
+ *pp = p->next;
+ break;
+ }
+ }
+
+ r_type = ELF32_R_TYPE (rel->r_info);
+ switch (r_type)
+ {
+ case R_PPC_GOT_TLSLD16:
+ case R_PPC_GOT_TLSLD16_LO:
+ case R_PPC_GOT_TLSLD16_HI:
+ case R_PPC_GOT_TLSLD16_HA:
+ htab->tlsld_got.refcount -= 1;
+ /* Fall thru */
+
+ case R_PPC_GOT_TLSGD16:
+ case R_PPC_GOT_TLSGD16_LO:
+ case R_PPC_GOT_TLSGD16_HI:
+ case R_PPC_GOT_TLSGD16_HA:
+ case R_PPC_GOT_TPREL16:
+ case R_PPC_GOT_TPREL16_LO:
+ case R_PPC_GOT_TPREL16_HI:
+ case R_PPC_GOT_TPREL16_HA:
+ case R_PPC_GOT_DTPREL16:
+ case R_PPC_GOT_DTPREL16_LO:
+ case R_PPC_GOT_DTPREL16_HI:
+ case R_PPC_GOT_DTPREL16_HA:
+ case R_PPC_GOT16:
+ case R_PPC_GOT16_LO:
+ case R_PPC_GOT16_HI:
+ case R_PPC_GOT16_HA:
+ if (h != NULL)
+ {
+ if (h->got.refcount > 0)
+ h->got.refcount--;
+ }
+ else if (local_got_refcounts != NULL)
+ {
+ if (local_got_refcounts[r_symndx] > 0)
+ local_got_refcounts[r_symndx]--;
+ }
+ break;
+
+ case R_PPC_REL24:
+ case R_PPC_REL14:
+ case R_PPC_REL14_BRTAKEN:
+ case R_PPC_REL14_BRNTAKEN:
+ case R_PPC_REL32:
+ if (h == NULL
+ || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
+ break;
+ /* Fall thru */
+
+ case R_PPC_ADDR32:
+ case R_PPC_ADDR24:
+ case R_PPC_ADDR16:
+ case R_PPC_ADDR16_LO:
+ case R_PPC_ADDR16_HI:
+ case R_PPC_ADDR16_HA:
+ case R_PPC_ADDR14:
+ case R_PPC_ADDR14_BRTAKEN:
+ case R_PPC_ADDR14_BRNTAKEN:
+ case R_PPC_UADDR32:
+ case R_PPC_UADDR16:
+ case R_PPC_PLT32:
+ case R_PPC_PLTREL24:
+ case R_PPC_PLT16_LO:
+ case R_PPC_PLT16_HI:
+ case R_PPC_PLT16_HA:
+ if (h != NULL)
+ {
+ if (h->plt.refcount > 0)
+ h->plt.refcount--;
+ }
break;
- case LINKER_SECTION_SDATA2: /* .sdata2/.sbss2 section */
- defaults.name = ".sdata2";
- defaults.rel_name = ".rela.sdata2";
- defaults.bss_name = ".sbss2";
- defaults.sym_name = "_SDA2_BASE_";
- defaults.sym_offset = 32768;
- defaults.flags |= SEC_READONLY;
+ default:
break;
}
-
- lsect = _bfd_elf_create_linker_section (abfd, info, which, &defaults);
}
-
- return lsect;
+ return TRUE;
}
\f
-/* If we have a non-zero sized .sbss2 or .PPC.EMB.sbss0 sections, we
- need to bump up the number of section headers. */
+/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
-static int
-ppc_elf_additional_program_headers (abfd)
- bfd *abfd;
+asection *
+ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
{
- asection *s;
- int ret;
-
- ret = 0;
-
- s = bfd_get_section_by_name (abfd, ".interp");
- if (s != NULL)
- ++ret;
-
- s = bfd_get_section_by_name (abfd, ".sbss2");
- if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->_raw_size > 0)
- ++ret;
+ struct ppc_elf_link_hash_table *htab;
- s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
- if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->_raw_size > 0)
- ++ret;
+ htab = ppc_elf_hash_table (info);
+ htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
+ FALSE, FALSE, TRUE);
- return ret;
+ return _bfd_elf_tls_setup (obfd, info);
}
-/* Modify the segment map if needed. */
+/* Run through all the TLS relocs looking for optimization
+ opportunities. */
-static bfd_boolean
-ppc_elf_modify_segment_map (abfd)
- bfd *abfd ATTRIBUTE_UNUSED;
+bfd_boolean
+ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info)
{
- return TRUE;
-}
-\f
-/* The powerpc .got has a blrl instruction in it. Mark it executable. */
+ bfd *ibfd;
+ asection *sec;
+ struct ppc_elf_link_hash_table *htab;
-static asection *
-ppc_elf_create_got (abfd, info)
- bfd *abfd;
- struct bfd_link_info *info;
-{
- register asection *s;
- flagword flags;
+ if (info->relocatable || info->shared)
+ return TRUE;
- if (!_bfd_elf_create_got_section (abfd, info))
- return NULL;
+ htab = ppc_elf_hash_table (info);
+ for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
+ {
+ Elf_Internal_Sym *locsyms = NULL;
+ Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
- s = bfd_get_section_by_name (abfd, ".got");
- if (s == NULL)
- abort ();
+ for (sec = ibfd->sections; sec != NULL; sec = sec->next)
+ if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
+ {
+ Elf_Internal_Rela *relstart, *rel, *relend;
+ int expecting_tls_get_addr;
- flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_IN_MEMORY
- | SEC_LINKER_CREATED);
- if (!bfd_set_section_flags (abfd, s, flags))
- return NULL;
- return s;
-}
+ /* Read the relocations. */
+ relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
+ info->keep_memory);
+ if (relstart == NULL)
+ return FALSE;
-/* We have to create .dynsbss and .rela.sbss here so that they get mapped
- to output sections (just like _bfd_elf_create_dynamic_sections has
- to create .dynbss and .rela.bss). */
+ expecting_tls_get_addr = 0;
+ relend = relstart + sec->reloc_count;
+ for (rel = relstart; rel < relend; rel++)
+ {
+ enum elf_ppc_reloc_type r_type;
+ unsigned long r_symndx;
+ struct elf_link_hash_entry *h = NULL;
+ char *tls_mask;
+ char tls_set, tls_clear;
+ bfd_boolean is_local;
+
+ r_symndx = ELF32_R_SYM (rel->r_info);
+ if (r_symndx >= symtab_hdr->sh_info)
+ {
+ struct elf_link_hash_entry **sym_hashes;
-static bfd_boolean
-ppc_elf_create_dynamic_sections (abfd, info)
- bfd *abfd;
- struct bfd_link_info *info;
-{
- register asection *s;
- flagword flags;
+ sym_hashes = elf_sym_hashes (ibfd);
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ while (h->root.type == bfd_link_hash_indirect
+ || h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+ }
- if (!ppc_elf_create_got (abfd, info))
- return FALSE;
+ is_local = FALSE;
+ if (h == NULL
+ || !h->def_dynamic)
+ is_local = TRUE;
- if (!_bfd_elf_create_dynamic_sections (abfd, info))
- return FALSE;
+ r_type = ELF32_R_TYPE (rel->r_info);
+ switch (r_type)
+ {
+ case R_PPC_GOT_TLSLD16:
+ case R_PPC_GOT_TLSLD16_LO:
+ case R_PPC_GOT_TLSLD16_HI:
+ case R_PPC_GOT_TLSLD16_HA:
+ /* These relocs should never be against a symbol
+ defined in a shared lib. Leave them alone if
+ that turns out to be the case. */
+ expecting_tls_get_addr = 0;
+ htab->tlsld_got.refcount -= 1;
+ if (!is_local)
+ continue;
+
+ /* LD -> LE */
+ tls_set = 0;
+ tls_clear = TLS_LD;
+ expecting_tls_get_addr = 1;
+ break;
- flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
- | SEC_LINKER_CREATED);
+ case R_PPC_GOT_TLSGD16:
+ case R_PPC_GOT_TLSGD16_LO:
+ case R_PPC_GOT_TLSGD16_HI:
+ case R_PPC_GOT_TLSGD16_HA:
+ if (is_local)
+ /* GD -> LE */
+ tls_set = 0;
+ else
+ /* GD -> IE */
+ tls_set = TLS_TLS | TLS_TPRELGD;
+ tls_clear = TLS_GD;
+ expecting_tls_get_addr = 1;
+ break;
- s = bfd_make_section (abfd, ".dynsbss");
- if (s == NULL
- || ! bfd_set_section_flags (abfd, s, SEC_ALLOC))
- return FALSE;
+ case R_PPC_GOT_TPREL16:
+ case R_PPC_GOT_TPREL16_LO:
+ case R_PPC_GOT_TPREL16_HI:
+ case R_PPC_GOT_TPREL16_HA:
+ expecting_tls_get_addr = 0;
+ if (is_local)
+ {
+ /* IE -> LE */
+ tls_set = 0;
+ tls_clear = TLS_TPREL;
+ break;
+ }
+ else
+ continue;
+
+ case R_PPC_REL14:
+ case R_PPC_REL14_BRTAKEN:
+ case R_PPC_REL14_BRNTAKEN:
+ case R_PPC_REL24:
+ if (expecting_tls_get_addr
+ && h != NULL
+ && h == htab->tls_get_addr)
+ {
+ if (h->plt.refcount > 0)
+ h->plt.refcount -= 1;
+ }
+ expecting_tls_get_addr = 0;
+ continue;
+
+ default:
+ expecting_tls_get_addr = 0;
+ continue;
+ }
- if (! info->shared)
- {
- s = bfd_make_section (abfd, ".rela.sbss");
- if (s == NULL
- || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
- || ! bfd_set_section_alignment (abfd, s, 2))
- return FALSE;
- }
+ if (h != NULL)
+ {
+ if (tls_set == 0)
+ {
+ /* We managed to get rid of a got entry. */
+ if (h->got.refcount > 0)
+ h->got.refcount -= 1;
+ }
+ tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
+ }
+ else
+ {
+ Elf_Internal_Sym *sym;
+ bfd_signed_vma *lgot_refs;
+ char *lgot_masks;
+
+ if (locsyms == NULL)
+ {
+ locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
+ if (locsyms == NULL)
+ locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
+ symtab_hdr->sh_info,
+ 0, NULL, NULL, NULL);
+ if (locsyms == NULL)
+ {
+ if (elf_section_data (sec)->relocs != relstart)
+ free (relstart);
+ return FALSE;
+ }
+ }
+ sym = locsyms + r_symndx;
+ lgot_refs = elf_local_got_refcounts (ibfd);
+ if (lgot_refs == NULL)
+ abort ();
+ if (tls_set == 0)
+ {
+ /* We managed to get rid of a got entry. */
+ if (lgot_refs[r_symndx] > 0)
+ lgot_refs[r_symndx] -= 1;
+ }
+ lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
+ tls_mask = &lgot_masks[r_symndx];
+ }
- s = bfd_get_section_by_name (abfd, ".plt");
- if (s == NULL)
- abort ();
+ *tls_mask |= tls_set;
+ *tls_mask &= ~tls_clear;
+ }
- flags = SEC_ALLOC | SEC_CODE | SEC_IN_MEMORY | SEC_LINKER_CREATED;
- return bfd_set_section_flags (abfd, s, flags);
-}
+ if (elf_section_data (sec)->relocs != relstart)
+ free (relstart);
+ }
+ if (locsyms != NULL
+ && (symtab_hdr->contents != (unsigned char *) locsyms))
+ {
+ if (!info->keep_memory)
+ free (locsyms);
+ else
+ symtab_hdr->contents = (unsigned char *) locsyms;
+ }
+ }
+ return TRUE;
+}
+\f
/* 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
understand. */
static bfd_boolean
-ppc_elf_adjust_dynamic_symbol (info, h)
- struct bfd_link_info *info;
- struct elf_link_hash_entry *h;
+ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
+ struct elf_link_hash_entry *h)
{
- bfd *dynobj = elf_hash_table (info)->dynobj;
+ struct ppc_elf_link_hash_table *htab;
asection *s;
unsigned int power_of_two;
- bfd_vma plt_offset;
#ifdef DEBUG
- fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n", h->root.root.string);
+ fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
+ h->root.root.string);
#endif
/* Make sure we know what is going on here. */
- BFD_ASSERT (dynobj != NULL
- && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
- || h->weakdef != NULL
- || ((h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_DYNAMIC) != 0
- && (h->elf_link_hash_flags
- & ELF_LINK_HASH_REF_REGULAR) != 0
- && (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0)));
-
- /* If this is a function, put it in the procedure linkage table. We
- will fill in the contents of the procedure linkage table later,
- when we know the address of the .got section. */
+ htab = ppc_elf_hash_table (info);
+ BFD_ASSERT (htab->elf.dynobj != NULL
+ && (h->needs_plt
+ || h->u.weakdef != NULL
+ || (h->def_dynamic
+ && h->ref_regular
+ && !h->def_regular)));
+
+ /* Deal with function syms. */
if (h->type == STT_FUNC
- || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
+ || h->needs_plt)
{
- if (! elf_hash_table (info)->dynamic_sections_created
- || SYMBOL_CALLS_LOCAL (info, h)
- || (info->shared && h->plt.refcount <= 0))
+ /* Clear procedure linkage table information for any symbol that
+ won't need a .plt entry. */
+ if (h->plt.refcount <= 0
+ || SYMBOL_CALLS_LOCAL (info, h)
+ || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
+ && h->root.type == bfd_link_hash_undefweak))
{
/* A PLT entry is not required/allowed when:
1. We are not using ld.so; because then the PLT entry
- can't be set up, so we can't use one.
+ can't be set up, so we can't use one. In this case,
+ ppc_elf_adjust_dynamic_symbol won't even be called.
- 2. We know for certain that a call to this symbol
- will go to this object.
+ 2. GC has rendered the entry unused.
- 3. GC has rendered the entry unused.
- Note, however, that in an executable all references to the
- symbol go to the PLT, so we can't turn it off in that case.
- ??? The correct thing to do here is to reference count
- all uses of the symbol, not just those to the GOT or PLT. */
+ 3. We know for certain that a call to this symbol
+ will go to this object, or will remain undefined. */
h->plt.offset = (bfd_vma) -1;
- h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
- return TRUE;
- }
-
- /* Make sure this symbol is output as a dynamic symbol. */
- if (h->dynindx == -1)
- {
- if (! bfd_elf32_link_record_dynamic_symbol (info, h))
- return FALSE;
- }
- BFD_ASSERT (h->dynindx != -1);
-
- s = bfd_get_section_by_name (dynobj, ".plt");
- BFD_ASSERT (s != NULL);
-
- /* If this is the first .plt entry, make room for the special
- first entry. */
- if (s->_raw_size == 0)
- s->_raw_size += PLT_INITIAL_ENTRY_SIZE;
-
- /* The PowerPC PLT is actually composed of two parts, the first part
- is 2 words (for a load and a jump), and then there is a remaining
- word available at the end. */
- plt_offset = (PLT_INITIAL_ENTRY_SIZE
- + (PLT_SLOT_SIZE
- * ((s->_raw_size - PLT_INITIAL_ENTRY_SIZE)
- / PLT_ENTRY_SIZE)));
-
- /* If this symbol is not defined in a regular file, and we are
- not generating a shared library, then set the symbol to this
- location in the .plt. This is required to make function
- pointers compare as equal between the normal executable and
- the shared library. */
- if (! info->shared
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
- {
- h->root.u.def.section = s;
- h->root.u.def.value = plt_offset;
+ h->needs_plt = 0;
}
-
- h->plt.offset = plt_offset;
-
- /* Make room for this entry. After the 8192nd entry, room
- for two entries is allocated. */
- if ((s->_raw_size - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
- >= PLT_NUM_SINGLE_ENTRIES)
- s->_raw_size += 2 * PLT_ENTRY_SIZE;
- else
- s->_raw_size += PLT_ENTRY_SIZE;
-
- /* We also need to make an entry in the .rela.plt section. */
- s = bfd_get_section_by_name (dynobj, ".rela.plt");
- BFD_ASSERT (s != NULL);
- s->_raw_size += sizeof (Elf32_External_Rela);
-
return TRUE;
}
else
/* 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->weakdef != NULL)
+ if (h->u.weakdef != NULL)
{
- BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
- || h->weakdef->root.type == bfd_link_hash_defweak);
- h->root.u.def.section = h->weakdef->root.u.def.section;
- h->root.u.def.value = h->weakdef->root.u.def.value;
+ 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;
+ if (ELIMINATE_COPY_RELOCS)
+ h->non_got_ref = h->u.weakdef->non_got_ref;
return TRUE;
}
if (info->shared)
return TRUE;
+ /* If there are no references to this symbol that do not use the
+ GOT, we don't need to generate a copy reloc. */
+ if (!h->non_got_ref)
+ return TRUE;
+
+ if (ELIMINATE_COPY_RELOCS)
+ {
+ struct ppc_elf_dyn_relocs *p;
+ for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
+ {
+ s = p->sec->output_section;
+ if (s != NULL && (s->flags & SEC_READONLY) != 0)
+ break;
+ }
+
+ /* If we didn't find any dynamic relocs in read-only sections, then
+ we'll be keeping the dynamic relocs and avoiding the copy reloc. */
+ if (p == NULL)
+ {
+ h->non_got_ref = 0;
+ return TRUE;
+ }
+ }
+
/* We must allocate the symbol in our .dynbss section, which will
become part of the .bss section of the executable. There will be
an entry for this symbol in the .dynsym section. The dynamic
allocate it in .sbss. FIXME: It would be better to do this if and
only if there were actually SDAREL relocs for that symbol. */
- if (h->size <= elf_gp_size (dynobj))
- s = bfd_get_section_by_name (dynobj, ".dynsbss");
+ if (h->size <= elf_gp_size (htab->elf.dynobj))
+ s = htab->dynsbss;
else
- s = bfd_get_section_by_name (dynobj, ".dynbss");
+ s = htab->dynbss;
BFD_ASSERT (s != NULL);
/* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
{
asection *srel;
- if (h->size <= elf_gp_size (dynobj))
- srel = bfd_get_section_by_name (dynobj, ".rela.sbss");
+ if (h->size <= elf_gp_size (htab->elf.dynobj))
+ srel = htab->relsbss;
else
- srel = bfd_get_section_by_name (dynobj, ".rela.bss");
+ srel = htab->relbss;
BFD_ASSERT (srel != NULL);
- srel->_raw_size += sizeof (Elf32_External_Rela);
- h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
+ srel->size += sizeof (Elf32_External_Rela);
+ h->needs_copy = 1;
}
/* We need to figure out the alignment required for this symbol. I
power_of_two = 4;
/* Apply the required alignment. */
- s->_raw_size = BFD_ALIGN (s->_raw_size,
- (bfd_size_type) (1 << power_of_two));
- if (power_of_two > bfd_get_section_alignment (dynobj, s))
+ s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
+ if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
{
- if (! bfd_set_section_alignment (dynobj, s, power_of_two))
+ if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
return FALSE;
}
/* Define the symbol as being at this point in the section. */
h->root.u.def.section = s;
- h->root.u.def.value = s->_raw_size;
+ h->root.u.def.value = s->size;
/* Increment the section size to make room for the symbol. */
- s->_raw_size += h->size;
+ s->size += h->size;
return TRUE;
}
/* Allocate space in associated reloc sections for dynamic relocs. */
static bfd_boolean
-allocate_dynrelocs (h, info)
- struct elf_link_hash_entry *h;
- PTR info ATTRIBUTE_UNUSED;
+allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
{
+ struct bfd_link_info *info = inf;
+ struct ppc_elf_link_hash_entry *eh;
+ struct ppc_elf_link_hash_table *htab;
struct ppc_elf_dyn_relocs *p;
if (h->root.type == bfd_link_hash_indirect)
if (h->root.type == bfd_link_hash_warning)
/* When warning symbols are created, they **replace** the "real"
entry in the hash table, thus we never get to see the real
- symbol in a hash traversal. So look at it now. */
- h = (struct elf_link_hash_entry *) h->root.u.i.link;
-
- for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
- {
- asection *sreloc = elf_section_data (p->sec)->sreloc;
- sreloc->_raw_size += p->count * sizeof (Elf32_External_Rela);
- }
-
- return TRUE;
-}
-
-/* Find any dynamic relocs that apply to read-only sections. */
-
-static bfd_boolean
-readonly_dynrelocs (h, info)
- struct elf_link_hash_entry *h;
- PTR info;
-{
- struct ppc_elf_dyn_relocs *p;
-
- if (h->root.type == bfd_link_hash_indirect)
- return TRUE;
-
- if (h->root.type == bfd_link_hash_warning)
- h = (struct elf_link_hash_entry *) h->root.u.i.link;
-
- for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
- {
- asection *s = p->sec->output_section;
-
- if (s != NULL
- && ((s->flags & (SEC_READONLY | SEC_ALLOC))
- == (SEC_READONLY | SEC_ALLOC)))
- {
- ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
-
- /* Not an error, just cut short the traversal. */
- return FALSE;
- }
- }
- return TRUE;
-}
-
-/* Set the sizes of the dynamic sections. */
-
-static bfd_boolean
-ppc_elf_size_dynamic_sections (output_bfd, info)
- bfd *output_bfd ATTRIBUTE_UNUSED;
- struct bfd_link_info *info;
-{
- bfd *dynobj;
- asection *s;
- bfd_boolean plt;
- bfd_boolean relocs;
- bfd *ibfd;
-
-#ifdef DEBUG
- fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
-#endif
-
- dynobj = elf_hash_table (info)->dynobj;
- BFD_ASSERT (dynobj != NULL);
-
- if (elf_hash_table (info)->dynamic_sections_created)
- {
- /* Set the contents of the .interp section to the interpreter. */
- if (! info->shared)
- {
- s = bfd_get_section_by_name (dynobj, ".interp");
- BFD_ASSERT (s != NULL);
- s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
- s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
- }
- }
- else
- {
- /* We may have created entries in the .rela.got, .rela.sdata, and
- .rela.sdata2 sections. However, if we are not creating the
- dynamic sections, we will not actually use these entries. Reset
- the size of .rela.got, et al, which will cause it to get
- stripped from the output file below. */
- static char *rela_sections[] = { ".rela.got", ".rela.sdata",
- ".rela.sdata2", ".rela.sbss",
- (char *) 0 };
- char **p;
-
- for (p = rela_sections; *p != (char *) 0; p++)
- {
- s = bfd_get_section_by_name (dynobj, *p);
- if (s != NULL)
- s->_raw_size = 0;
- }
- }
-
- /* Allocate space for local sym dynamic relocs. */
- for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
- {
- if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
- continue;
-
- for (s = ibfd->sections; s != NULL; s = s->next)
- {
- struct ppc_elf_dyn_relocs *p;
-
- for (p = ((struct ppc_elf_dyn_relocs *)
- elf_section_data (s)->local_dynrel);
- p != NULL;
- p = p->next)
- {
- if (!bfd_is_abs_section (p->sec)
- && bfd_is_abs_section (p->sec->output_section))
- {
- /* Input section has been discarded, either because
- it is a copy of a linkonce section or due to
- linker script /DISCARD/, so we'll be discarding
- the relocs too. */
- }
- else if (p->count != 0)
- {
- elf_section_data (p->sec)->sreloc->_raw_size
- += p->count * sizeof (Elf32_External_Rela);
- if ((p->sec->output_section->flags
- & (SEC_READONLY | SEC_ALLOC))
- == (SEC_READONLY | SEC_ALLOC))
- info->flags |= DF_TEXTREL;
- }
- }
- }
- }
-
- /* Allocate space for global sym dynamic relocs. */
- elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, NULL);
-
- /* The check_relocs and adjust_dynamic_symbol entry points have
- determined the sizes of the various dynamic sections. Allocate
- memory for them. */
- plt = FALSE;
- relocs = FALSE;
- for (s = dynobj->sections; s != NULL; s = s->next)
- {
- const char *name;
- bfd_boolean strip;
-
- if ((s->flags & SEC_LINKER_CREATED) == 0)
- continue;
-
- /* 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);
-
- strip = FALSE;
-
- if (strcmp (name, ".plt") == 0)
- {
- if (s->_raw_size == 0)
- {
- /* Strip this section if we don't need it; see the
- comment below. */
- strip = TRUE;
- }
- else
- {
- /* Remember whether there is a PLT. */
- plt = TRUE;
- }
- }
- else if (strncmp (name, ".rela", 5) == 0)
- {
- if (s->_raw_size == 0)
- {
- /* If we don't need this section, strip it from the
- output file. This is mostly to handle .rela.bss and
- .rela.plt. We must create both sections in
- create_dynamic_sections, because they 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. */
- strip = TRUE;
- }
- else
- {
- /* Remember whether there are any relocation sections. */
- relocs = TRUE;
-
- /* We use the reloc_count field as a counter if we need
- to copy relocs into the output file. */
- s->reloc_count = 0;
- }
- }
- else if (strcmp (name, ".got") != 0
- && strcmp (name, ".sdata") != 0
- && strcmp (name, ".sdata2") != 0)
- {
- /* It's not one of our sections, so don't allocate space. */
- continue;
- }
-
- if (strip)
- {
- _bfd_strip_section_from_output (info, s);
- continue;
- }
-
- /* Allocate memory for the section contents. */
- s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
- if (s->contents == NULL && s->_raw_size != 0)
- return FALSE;
- }
-
- if (elf_hash_table (info)->dynamic_sections_created)
- {
- /* Add some entries to the .dynamic section. We fill in the
- values later, in ppc_elf_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_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
-
- if (!info->shared)
- {
- if (!add_dynamic_entry (DT_DEBUG, 0))
- return FALSE;
- }
-
- if (plt)
- {
- 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;
- }
-
- if (relocs)
- {
- if (!add_dynamic_entry (DT_RELA, 0)
- || !add_dynamic_entry (DT_RELASZ, 0)
- || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
- return FALSE;
- }
-
- /* If any dynamic relocs apply to a read-only section, then we
- need a DT_TEXTREL entry. */
- if ((info->flags & DF_TEXTREL) == 0)
- elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs,
- (PTR) info);
-
- if ((info->flags & DF_TEXTREL) != 0)
- {
- if (!add_dynamic_entry (DT_TEXTREL, 0))
- return FALSE;
- }
- }
-#undef add_dynamic_entry
-
- return TRUE;
-}
-\f
-/* Look through the relocs for a section during the first phase, and
- allocate space in the global offset table or procedure linkage
- table. */
-
-static bfd_boolean
-ppc_elf_check_relocs (abfd, info, sec, relocs)
- bfd *abfd;
- struct bfd_link_info *info;
- asection *sec;
- const Elf_Internal_Rela *relocs;
-{
- bfd *dynobj;
- Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
- const Elf_Internal_Rela *rel;
- const Elf_Internal_Rela *rel_end;
- bfd_signed_vma *local_got_refcounts;
- elf_linker_section_t *sdata;
- elf_linker_section_t *sdata2;
- asection *sreloc;
- asection *sgot = NULL;
- asection *srelgot = NULL;
-
- if (info->relocateable)
- return TRUE;
-
-#ifdef DEBUG
- fprintf (stderr, "ppc_elf_check_relocs called for section %s in %s\n",
- bfd_get_section_name (abfd, sec),
- bfd_archive_filename (abfd));
-#endif
-
- /* Create the linker generated sections all the time so that the
- special symbols are created. */
-
- if ((sdata = elf_linker_section (abfd, LINKER_SECTION_SDATA)) == NULL)
- {
- sdata = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA);
- if (!sdata)
- return FALSE;
- }
-
- if ((sdata2 = elf_linker_section (abfd, LINKER_SECTION_SDATA2)) == NULL)
- {
- sdata2 = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA2);
- if (!sdata2)
- return FALSE;
- }
-
- dynobj = elf_hash_table (info)->dynobj;
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- local_got_refcounts = elf_local_got_refcounts (abfd);
-
- sym_hashes = elf_sym_hashes (abfd);
- sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
- if (!elf_bad_symtab (abfd))
- sym_hashes_end -= symtab_hdr->sh_info;
-
- sreloc = NULL;
-
- rel_end = relocs + sec->reloc_count;
- for (rel = relocs; rel < rel_end; rel++)
- {
- unsigned long r_symndx;
- struct elf_link_hash_entry *h;
-
- r_symndx = ELF32_R_SYM (rel->r_info);
- if (r_symndx < symtab_hdr->sh_info)
- h = NULL;
- else
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
-
- /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
- This shows up in particular in an R_PPC_ADDR32 in the eabi
- startup code. */
- if (h && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
+ symbol in a hash traversal. So look at it now. */
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+
+ htab = ppc_elf_hash_table (info);
+ if (htab->elf.dynamic_sections_created
+ && h->plt.refcount > 0)
+ {
+ /* Make sure this symbol is output as a dynamic symbol. */
+ if (h->dynindx == -1
+ && !h->forced_local)
{
- if (sgot == NULL)
- {
- if (dynobj == NULL)
- elf_hash_table (info)->dynobj = dynobj = abfd;
- sgot = ppc_elf_create_got (dynobj, info);
- if (sgot == NULL)
- return FALSE;
- }
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
+ return FALSE;
}
- switch (ELF32_R_TYPE (rel->r_info))
+ if (info->shared
+ || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
{
- /* GOT16 relocations */
- case R_PPC_GOT16:
- case R_PPC_GOT16_LO:
- case R_PPC_GOT16_HI:
- case R_PPC_GOT16_HA:
- /* This symbol requires a global offset table entry. */
-
- if (sgot == NULL)
+ asection *s = htab->plt;
+
+ /* If this is the first .plt entry, make room for the special
+ first entry. */
+ if (s->size == 0)
+ s->size += PLT_INITIAL_ENTRY_SIZE;
+
+ /* The PowerPC PLT is actually composed of two parts, the
+ first part is 2 words (for a load and a jump), and then
+ there is a remaining word available at the end. */
+ h->plt.offset = (PLT_INITIAL_ENTRY_SIZE
+ + (PLT_SLOT_SIZE
+ * ((s->size - PLT_INITIAL_ENTRY_SIZE)
+ / PLT_ENTRY_SIZE)));
+
+ /* If this symbol is not defined in a regular file, and we
+ are not generating a shared library, then set the symbol
+ to this location in the .plt. This is required to make
+ function pointers compare as equal between the normal
+ executable and the shared library. */
+ if (! info->shared
+ && !h->def_regular)
{
- if (dynobj == NULL)
- elf_hash_table (info)->dynobj = dynobj = abfd;
- sgot = ppc_elf_create_got (dynobj, info);
- if (sgot == NULL)
- return FALSE;
+ h->root.u.def.section = s;
+ h->root.u.def.value = h->plt.offset;
}
- if (srelgot == NULL
- && (h != NULL || info->shared))
- {
- srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
- if (srelgot == NULL)
- {
- srelgot = bfd_make_section (dynobj, ".rela.got");
- if (srelgot == NULL
- || ! bfd_set_section_flags (dynobj, srelgot,
- (SEC_ALLOC
- | SEC_LOAD
- | SEC_HAS_CONTENTS
- | SEC_IN_MEMORY
- | SEC_LINKER_CREATED
- | SEC_READONLY))
- || ! bfd_set_section_alignment (dynobj, srelgot, 2))
- return FALSE;
- }
- }
+ /* Make room for this entry. After the 8192nd entry, room
+ for two entries is allocated. */
+ s->size += PLT_ENTRY_SIZE;
+ if ((s->size - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
+ > PLT_NUM_SINGLE_ENTRIES)
+ s->size += PLT_ENTRY_SIZE;
- if (h != NULL)
+ /* We also need to make an entry in the .rela.plt section. */
+ htab->relplt->size += sizeof (Elf32_External_Rela);
+ }
+ else
+ {
+ h->plt.offset = (bfd_vma) -1;
+ h->needs_plt = 0;
+ }
+ }
+ else
+ {
+ h->plt.offset = (bfd_vma) -1;
+ h->needs_plt = 0;
+ }
+
+ eh = (struct ppc_elf_link_hash_entry *) h;
+ if (eh->elf.got.refcount > 0)
+ {
+ /* Make sure this symbol is output as a dynamic symbol. */
+ if (eh->elf.dynindx == -1
+ && !eh->elf.forced_local)
+ {
+ if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
+ return FALSE;
+ }
+
+ if (eh->tls_mask == (TLS_TLS | TLS_LD)
+ && !eh->elf.def_dynamic)
+ /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
+ eh->elf.got.offset = (bfd_vma) -1;
+ else
+ {
+ bfd_boolean dyn;
+ eh->elf.got.offset = htab->got->size;
+ if ((eh->tls_mask & TLS_TLS) != 0)
{
- if (h->got.refcount == 0)
- {
- /* Make sure this symbol is output as a dynamic symbol. */
- if (h->dynindx == -1)
- if (!bfd_elf32_link_record_dynamic_symbol (info, h))
- return FALSE;
-
- /* Allocate space in the .got. */
- sgot->_raw_size += 4;
- /* Allocate relocation space. */
- srelgot->_raw_size += sizeof (Elf32_External_Rela);
- }
- h->got.refcount++;
+ if ((eh->tls_mask & TLS_LD) != 0)
+ htab->got->size += 8;
+ if ((eh->tls_mask & TLS_GD) != 0)
+ htab->got->size += 8;
+ if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
+ htab->got->size += 4;
+ if ((eh->tls_mask & TLS_DTPREL) != 0)
+ htab->got->size += 4;
}
else
+ htab->got->size += 4;
+ dyn = htab->elf.dynamic_sections_created;
+ if ((info->shared
+ || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
+ && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
+ || eh->elf.root.type != bfd_link_hash_undefweak))
{
- /* This is a global offset table entry for a local symbol. */
- if (local_got_refcounts == NULL)
- {
- bfd_size_type size;
+ /* All the entries we allocated need relocs. */
+ htab->relgot->size
+ += ((htab->got->size - eh->elf.got.offset) / 4
+ * sizeof (Elf32_External_Rela));
+ /* Except LD only needs one. */
+ if ((eh->tls_mask & TLS_LD) != 0)
+ htab->relgot->size -= sizeof (Elf32_External_Rela);
+ }
+ }
+ }
+ else
+ eh->elf.got.offset = (bfd_vma) -1;
- size = symtab_hdr->sh_info;
- size *= sizeof (bfd_signed_vma);
- local_got_refcounts
- = (bfd_signed_vma *) bfd_zalloc (abfd, size);
- if (local_got_refcounts == NULL)
- return FALSE;
- elf_local_got_refcounts (abfd) = local_got_refcounts;
- }
- if (local_got_refcounts[r_symndx] == 0)
- {
- sgot->_raw_size += 4;
+ if (eh->dyn_relocs == NULL)
+ return TRUE;
- /* If we are generating a shared object, we need to
- output a R_PPC_RELATIVE reloc so that the
- dynamic linker can adjust this GOT entry. */
- if (info->shared)
- srelgot->_raw_size += sizeof (Elf32_External_Rela);
- }
- local_got_refcounts[r_symndx]++;
- }
- break;
+ /* In the shared -Bsymbolic case, discard space allocated for
+ dynamic pc-relative relocs against symbols which turn out to be
+ defined in regular objects. For the normal shared case, discard
+ space for relocs that have become local due to symbol visibility
+ changes. */
- /* Indirect .sdata relocation */
- case R_PPC_EMB_SDAI16:
- if (info->shared)
- {
- ((*_bfd_error_handler)
- (_("%s: relocation %s cannot be used when making a shared object"),
- bfd_archive_filename (abfd), "R_PPC_EMB_SDAI16"));
- return FALSE;
- }
+ if (info->shared)
+ {
+ /* Relocs that use pc_count are those that appear on a call insn,
+ or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
+ generated via assembly. We want calls to protected symbols to
+ resolve directly to the function rather than going via the plt.
+ If people want function pointer comparisons to work as expected
+ then they should avoid writing weird assembly. */
+ if (SYMBOL_CALLS_LOCAL (info, h))
+ {
+ struct ppc_elf_dyn_relocs **pp;
- if (srelgot == NULL && (h != NULL || info->shared))
+ for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
{
- srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
- if (srelgot == NULL)
- {
- srelgot = bfd_make_section (dynobj, ".rela.got");
- if (srelgot == NULL
- || ! bfd_set_section_flags (dynobj, srelgot,
- (SEC_ALLOC
- | SEC_LOAD
- | SEC_HAS_CONTENTS
- | SEC_IN_MEMORY
- | SEC_LINKER_CREATED
- | SEC_READONLY))
- || ! bfd_set_section_alignment (dynobj, srelgot, 2))
- return FALSE;
- }
+ p->count -= p->pc_count;
+ p->pc_count = 0;
+ if (p->count == 0)
+ *pp = p->next;
+ else
+ pp = &p->next;
}
+ }
- if (!bfd_elf32_create_pointer_linker_section (abfd, info, sdata, h, rel))
+ /* Also discard relocs on undefined weak syms with non-default
+ visibility. */
+ if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
+ && h->root.type == bfd_link_hash_undefweak)
+ eh->dyn_relocs = NULL;
+
+ /* Make sure undefined weak symbols are output as a dynamic symbol
+ in PIEs. */
+ if (info->pie
+ && eh->dyn_relocs != NULL
+ && h->dynindx == -1
+ && h->root.type == bfd_link_hash_undefweak
+ && !h->forced_local)
+ {
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
+ }
+ }
+ else if (ELIMINATE_COPY_RELOCS)
+ {
+ /* For the non-shared case, discard space for relocs against
+ symbols which turn out to need copy relocs or are not
+ dynamic. */
- break;
-
- /* Indirect .sdata2 relocation */
- case R_PPC_EMB_SDA2I16:
- if (info->shared)
+ if (!h->non_got_ref
+ && h->def_dynamic
+ && !h->def_regular)
+ {
+ /* Make sure this symbol is output as a dynamic symbol.
+ Undefined weak syms won't yet be marked as dynamic. */
+ if (h->dynindx == -1
+ && !h->forced_local)
{
- ((*_bfd_error_handler)
- (_("%s: relocation %s cannot be used when making a shared object"),
- bfd_archive_filename (abfd), "R_PPC_EMB_SDA2I16"));
- return FALSE;
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
+ return FALSE;
}
- if (srelgot == NULL && (h != NULL || info->shared))
- {
- srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
- if (srelgot == NULL)
- {
- srelgot = bfd_make_section (dynobj, ".rela.got");
- if (srelgot == NULL
- || ! bfd_set_section_flags (dynobj, srelgot,
- (SEC_ALLOC
- | SEC_LOAD
- | SEC_HAS_CONTENTS
- | SEC_IN_MEMORY
- | SEC_LINKER_CREATED
- | SEC_READONLY))
- || ! bfd_set_section_alignment (dynobj, srelgot, 2))
- return FALSE;
- }
- }
+ /* If that succeeded, we know we'll be keeping all the
+ relocs. */
+ if (h->dynindx != -1)
+ goto keep;
+ }
- if (!bfd_elf32_create_pointer_linker_section (abfd, info, sdata2, h, rel))
- return FALSE;
+ eh->dyn_relocs = NULL;
- break;
+ keep: ;
+ }
- case R_PPC_SDAREL16:
- case R_PPC_EMB_SDA2REL:
- case R_PPC_EMB_SDA21:
- if (info->shared)
- {
- ((*_bfd_error_handler)
- (_("%s: relocation %s cannot be used when making a shared object"),
- bfd_archive_filename (abfd),
- ppc_elf_howto_table[(int) ELF32_R_TYPE (rel->r_info)]->name));
- return FALSE;
- }
- break;
+ /* Finally, allocate space. */
+ for (p = eh->dyn_relocs; p != NULL; p = p->next)
+ {
+ asection *sreloc = elf_section_data (p->sec)->sreloc;
+ sreloc->size += p->count * sizeof (Elf32_External_Rela);
+ }
- case R_PPC_PLT32:
- case R_PPC_PLTREL24:
- case R_PPC_PLT16_LO:
- case R_PPC_PLT16_HI:
- case R_PPC_PLT16_HA:
-#ifdef DEBUG
- fprintf (stderr, "Reloc requires a PLT entry\n");
-#endif
- /* This symbol requires a procedure linkage table entry. We
- actually build the entry in adjust_dynamic_symbol,
- because this might be a case of linking PIC code without
- linking in any dynamic objects, in which case we don't
- need to generate a procedure linkage table after all. */
+ return TRUE;
+}
- if (h == NULL)
- {
- /* It does not make sense to have a procedure linkage
- table entry for a local symbol. */
- bfd_set_error (bfd_error_bad_value);
- return FALSE;
- }
+/* Find any dynamic relocs that apply to read-only sections. */
- /* Make sure this symbol is output as a dynamic symbol. */
- if (h->dynindx == -1)
- {
- if (! bfd_elf32_link_record_dynamic_symbol (info, h))
- return FALSE;
- }
- h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
- h->plt.refcount++;
- break;
+static bfd_boolean
+readonly_dynrelocs (struct elf_link_hash_entry *h, void *info)
+{
+ struct ppc_elf_dyn_relocs *p;
- /* The following relocations don't need to propagate the
- relocation if linking a shared object since they are
- section relative. */
- case R_PPC_SECTOFF:
- case R_PPC_SECTOFF_LO:
- case R_PPC_SECTOFF_HI:
- case R_PPC_SECTOFF_HA:
- break;
+ if (h->root.type == bfd_link_hash_indirect)
+ return TRUE;
- /* This refers only to functions defined in the shared library */
- case R_PPC_LOCAL24PC:
- break;
+ if (h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
- /* This relocation describes the C++ object vtable hierarchy.
- Reconstruct it for later use during GC. */
- case R_PPC_GNU_VTINHERIT:
- if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
- return FALSE;
- break;
+ for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
+ {
+ asection *s = p->sec->output_section;
- /* This relocation describes which C++ vtable entries are actually
- used. Record for later use during GC. */
- case R_PPC_GNU_VTENTRY:
- if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
- return FALSE;
- break;
+ if (s != NULL
+ && ((s->flags & (SEC_READONLY | SEC_ALLOC))
+ == (SEC_READONLY | SEC_ALLOC)))
+ {
+ ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
- /* When creating a shared object, we must copy these
- relocs into the output file. We create a reloc
- section in dynobj and make room for the reloc. */
- case R_PPC_REL24:
- case R_PPC_REL14:
- case R_PPC_REL14_BRTAKEN:
- case R_PPC_REL14_BRNTAKEN:
- case R_PPC_REL32:
- if (h == NULL
- || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
- || SYMBOL_REFERENCES_LOCAL (info, h))
- break;
- /* fall through */
+ /* Not an error, just cut short the traversal. */
+ return FALSE;
+ }
+ }
+ return TRUE;
+}
- default:
- if (info->shared)
- {
- struct ppc_elf_dyn_relocs *p;
- struct ppc_elf_dyn_relocs **head;
+/* Set the sizes of the dynamic sections. */
+
+static bfd_boolean
+ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info)
+{
+ struct ppc_elf_link_hash_table *htab;
+ asection *s;
+ bfd_boolean relocs;
+ bfd *ibfd;
#ifdef DEBUG
- fprintf (stderr, "ppc_elf_check_relocs need to create relocation for %s\n",
- (h && h->root.root.string) ? h->root.root.string : "<unknown>");
+ fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
#endif
- if (sreloc == NULL)
- {
- const char *name;
- name = (bfd_elf_string_from_elf_section
- (abfd,
- elf_elfheader (abfd)->e_shstrndx,
- elf_section_data (sec)->rel_hdr.sh_name));
- if (name == NULL)
- return FALSE;
+ htab = ppc_elf_hash_table (info);
+ BFD_ASSERT (htab->elf.dynobj != NULL);
- BFD_ASSERT (strncmp (name, ".rela", 5) == 0
- && strcmp (bfd_get_section_name (abfd, sec),
- name + 5) == 0);
+ 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 (htab->elf.dynobj, ".interp");
+ BFD_ASSERT (s != NULL);
+ s->size = sizeof ELF_DYNAMIC_INTERPRETER;
+ s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
+ }
+ }
- sreloc = bfd_get_section_by_name (dynobj, name);
- if (sreloc == NULL)
- {
- flagword flags;
+ if (htab->tlsld_got.refcount > 0)
+ {
+ htab->tlsld_got.offset = htab->got->size;
+ htab->got->size += 8;
+ if (info->shared)
+ htab->relgot->size += sizeof (Elf32_External_Rela);
+ }
+ else
+ htab->tlsld_got.offset = (bfd_vma) -1;
- sreloc = bfd_make_section (dynobj, name);
- flags = (SEC_HAS_CONTENTS | SEC_READONLY
- | SEC_IN_MEMORY | SEC_LINKER_CREATED);
- if ((sec->flags & SEC_ALLOC) != 0)
- flags |= SEC_ALLOC | SEC_LOAD;
- if (sreloc == NULL
- || ! bfd_set_section_flags (dynobj, sreloc, flags)
- || ! bfd_set_section_alignment (dynobj, sreloc, 2))
- return FALSE;
- }
- elf_section_data (sec)->sreloc = sreloc;
- }
+ /* Set up .got offsets for local syms, and space for local dynamic
+ relocs. */
+ for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
+ {
+ bfd_signed_vma *local_got;
+ bfd_signed_vma *end_local_got;
+ char *lgot_masks;
+ bfd_size_type locsymcount;
+ Elf_Internal_Shdr *symtab_hdr;
+ asection *srel;
- /* If this is a global symbol, we count the number of
- relocations we need for this symbol. */
- if (h != NULL)
- {
- head = &ppc_elf_hash_entry (h)->dyn_relocs;
- }
- else
- {
- /* Track dynamic relocs needed for local syms too.
- We really need local syms available to do this
- easily. Oh well. */
+ if (!is_ppc_elf_target (ibfd->xvec))
+ continue;
- asection *s;
- s = (bfd_section_from_r_symndx
- (abfd, &ppc_elf_hash_table (info)->sym_sec,
- sec, r_symndx));
- if (s == NULL)
- return FALSE;
+ for (s = ibfd->sections; s != NULL; s = s->next)
+ {
+ struct ppc_elf_dyn_relocs *p;
- head = ((struct ppc_elf_dyn_relocs **)
- &elf_section_data (s)->local_dynrel);
+ for (p = ((struct ppc_elf_dyn_relocs *)
+ elf_section_data (s)->local_dynrel);
+ p != NULL;
+ p = p->next)
+ {
+ if (!bfd_is_abs_section (p->sec)
+ && bfd_is_abs_section (p->sec->output_section))
+ {
+ /* Input section has been discarded, either because
+ it is a copy of a linkonce section or due to
+ linker script /DISCARD/, so we'll be discarding
+ the relocs too. */
}
-
- p = *head;
- if (p == NULL || p->sec != sec)
+ else if (p->count != 0)
{
- p = ((struct ppc_elf_dyn_relocs *)
- bfd_alloc (elf_hash_table (info)->dynobj, sizeof *p));
- if (p == NULL)
- return FALSE;
- p->next = *head;
- *head = p;
- p->sec = sec;
- p->count = 0;
+ elf_section_data (p->sec)->sreloc->size
+ += p->count * sizeof (Elf32_External_Rela);
+ if ((p->sec->output_section->flags
+ & (SEC_READONLY | SEC_ALLOC))
+ == (SEC_READONLY | SEC_ALLOC))
+ info->flags |= DF_TEXTREL;
}
+ }
+ }
+
+ local_got = elf_local_got_refcounts (ibfd);
+ if (!local_got)
+ continue;
+
+ symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
+ locsymcount = symtab_hdr->sh_info;
+ end_local_got = local_got + locsymcount;
+ lgot_masks = (char *) end_local_got;
+ s = htab->got;
+ srel = htab->relgot;
+ for (; local_got < end_local_got; ++local_got, ++lgot_masks)
+ if (*local_got > 0)
+ {
+ if (*lgot_masks == (TLS_TLS | TLS_LD))
+ {
+ /* If just an LD reloc, we'll just use
+ htab->tlsld_got.offset. */
+ if (htab->tlsld_got.offset == (bfd_vma) -1)
+ {
+ htab->tlsld_got.offset = s->size;
+ s->size += 8;
+ if (info->shared)
+ srel->size += sizeof (Elf32_External_Rela);
+ }
+ *local_got = (bfd_vma) -1;
+ }
+ else
+ {
+ *local_got = s->size;
+ if ((*lgot_masks & TLS_TLS) != 0)
+ {
+ if ((*lgot_masks & TLS_GD) != 0)
+ s->size += 8;
+ if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
+ s->size += 4;
+ if ((*lgot_masks & TLS_DTPREL) != 0)
+ s->size += 4;
+ }
+ else
+ s->size += 4;
+ if (info->shared)
+ srel->size += ((s->size - *local_got) / 4
+ * sizeof (Elf32_External_Rela));
+ }
+ }
+ else
+ *local_got = (bfd_vma) -1;
+ }
+
+ /* Allocate space for global sym dynamic relocs. */
+ elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
+
+ /* We've now determined the sizes of the various dynamic sections.
+ Allocate memory for them. */
+ relocs = FALSE;
+ for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
+ {
+ if ((s->flags & SEC_LINKER_CREATED) == 0)
+ continue;
- p->count++;
+ if (s == htab->plt
+ || s == htab->got
+ || s == htab->sbss)
+ {
+ /* Strip this section if we don't need it; see the
+ comment below. */
+ }
+ else if (s == htab->sdata[0].section
+ || s == htab->sdata[1].section)
+ {
+ /* Strip these too. */
+ }
+ else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
+ {
+ if (s->size == 0)
+ {
+ /* If we don't need this section, strip it from the
+ output file. This is mostly to handle .rela.bss and
+ .rela.plt. We must create both sections in
+ create_dynamic_sections, because they 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. */
}
+ else
+ {
+ /* Remember whether there are any relocation sections. */
+ relocs = TRUE;
- break;
+ /* We use the reloc_count field as a counter if we need
+ to copy relocs into the output file. */
+ s->reloc_count = 0;
+ }
+ }
+ else
+ {
+ /* It's not one of our sections, so don't allocate space. */
+ continue;
}
- }
- return TRUE;
-}
+ if (s->size == 0)
+ {
+ _bfd_strip_section_from_output (info, s);
+ continue;
+ }
-/* Return the section that should be marked against GC for a given
- relocation. */
+ if (s == htab->sbss)
+ continue;
-static asection *
-ppc_elf_gc_mark_hook (sec, info, rel, h, sym)
- asection *sec;
- struct bfd_link_info *info ATTRIBUTE_UNUSED;
- Elf_Internal_Rela *rel;
- struct elf_link_hash_entry *h;
- Elf_Internal_Sym *sym;
-{
- if (h != NULL)
+ /* Allocate memory for the section contents. */
+ s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
+ if (s->contents == NULL)
+ return FALSE;
+ }
+
+ if (htab->elf.dynamic_sections_created)
{
- switch (ELF32_R_TYPE (rel->r_info))
+ /* Add some entries to the .dynamic section. We fill in the
+ values later, in ppc_elf_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 (info->executable)
{
- case R_PPC_GNU_VTINHERIT:
- case R_PPC_GNU_VTENTRY:
- break;
+ if (!add_dynamic_entry (DT_DEBUG, 0))
+ return FALSE;
+ }
- default:
- switch (h->root.type)
- {
- case bfd_link_hash_defined:
- case bfd_link_hash_defweak:
- return h->root.u.def.section;
+ if (htab->plt != NULL && htab->plt->size != 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;
+ }
- case bfd_link_hash_common:
- return h->root.u.c.p->section;
+ if (relocs)
+ {
+ if (!add_dynamic_entry (DT_RELA, 0)
+ || !add_dynamic_entry (DT_RELASZ, 0)
+ || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
+ return FALSE;
+ }
- default:
- break;
- }
+ /* If any dynamic relocs apply to a read-only section, then we
+ need a DT_TEXTREL entry. */
+ if ((info->flags & DF_TEXTREL) == 0)
+ elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs,
+ info);
+
+ if ((info->flags & DF_TEXTREL) != 0)
+ {
+ if (!add_dynamic_entry (DT_TEXTREL, 0))
+ return FALSE;
}
}
- else
- return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
+#undef add_dynamic_entry
- return NULL;
+ return TRUE;
}
+\f
+#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
-/* Update the got entry reference counts for the section being removed. */
+static const int shared_stub_entry[] =
+ {
+ 0x7c0802a6, /* mflr 0 */
+ 0x429f0005, /* bcl 20, 31, .Lxxx */
+ 0x7d6802a6, /* mflr 11 */
+ 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
+ 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
+ 0x7c0803a6, /* mtlr 0 */
+ 0x7d6903a6, /* mtctr 11 */
+ 0x4e800420, /* bctr */
+ };
+
+static const int stub_entry[] =
+ {
+ 0x3d600000, /* lis 11,xxx@ha */
+ 0x396b0000, /* addi 11,11,xxx@l */
+ 0x7d6903a6, /* mtctr 11 */
+ 0x4e800420, /* bctr */
+ };
static bfd_boolean
-ppc_elf_gc_sweep_hook (abfd, info, sec, relocs)
- bfd *abfd;
- struct bfd_link_info *info ATTRIBUTE_UNUSED;
- asection *sec;
- const Elf_Internal_Rela *relocs;
+ppc_elf_relax_section (bfd *abfd,
+ asection *isec,
+ struct bfd_link_info *link_info,
+ bfd_boolean *again)
{
- Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes;
- bfd_signed_vma *local_got_refcounts;
- const Elf_Internal_Rela *rel, *relend;
- unsigned long r_symndx;
- struct elf_link_hash_entry *h;
+ struct one_fixup
+ {
+ struct one_fixup *next;
+ asection *tsec;
+ bfd_vma toff;
+ bfd_vma trampoff;
+ };
- elf_section_data (sec)->local_dynrel = NULL;
+ Elf_Internal_Shdr *symtab_hdr;
+ bfd_byte *contents = NULL;
+ Elf_Internal_Sym *isymbuf = NULL;
+ Elf_Internal_Rela *internal_relocs = NULL;
+ Elf_Internal_Rela *irel, *irelend;
+ struct one_fixup *fixups = NULL;
+ bfd_boolean changed;
+ struct ppc_elf_link_hash_table *ppc_info;
+ bfd_size_type trampoff;
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- sym_hashes = elf_sym_hashes (abfd);
- local_got_refcounts = elf_local_got_refcounts (abfd);
+ *again = FALSE;
- relend = relocs + sec->reloc_count;
- for (rel = relocs; rel < relend; rel++)
- switch (ELF32_R_TYPE (rel->r_info))
- {
- case R_PPC_GOT16:
- case R_PPC_GOT16_LO:
- case R_PPC_GOT16_HI:
- case R_PPC_GOT16_HA:
- r_symndx = ELF32_R_SYM (rel->r_info);
- if (r_symndx >= symtab_hdr->sh_info)
- {
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- if (h->got.refcount > 0)
- h->got.refcount--;
- }
- else if (local_got_refcounts != NULL)
- {
- if (local_got_refcounts[r_symndx] > 0)
- local_got_refcounts[r_symndx]--;
- }
- break;
-
- case R_PPC_PLT32:
- case R_PPC_PLTREL24:
- case R_PPC_PLT16_LO:
- case R_PPC_PLT16_HI:
- case R_PPC_PLT16_HA:
- r_symndx = ELF32_R_SYM (rel->r_info);
- if (r_symndx >= symtab_hdr->sh_info)
- {
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- if (h->plt.refcount > 0)
- h->plt.refcount--;
- }
- /* Fall through */
+ /* Nothing to do if there are no relocations. */
+ if ((isec->flags & SEC_RELOC) == 0 || isec->reloc_count == 0)
+ return TRUE;
- default:
- r_symndx = ELF32_R_SYM (rel->r_info);
- if (r_symndx >= symtab_hdr->sh_info)
- {
- struct ppc_elf_dyn_relocs **pp, *p;
+ trampoff = (isec->size + 3) & (bfd_vma) -4;
+ /* Space for a branch around any trampolines. */
+ trampoff += 4;
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- for (pp = &ppc_elf_hash_entry (h)->dyn_relocs;
- (p = *pp) != NULL;
- pp = &p->next)
- if (p->sec == sec)
- {
- if (--p->count == 0)
- *pp = p->next;
- break;
- }
- }
- break;
- }
+ /* Get a copy of the native relocations. */
+ internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
+ link_info->keep_memory);
+ if (internal_relocs == NULL)
+ goto error_return;
- return TRUE;
-}
-\f
-/* 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. */
+ ppc_info = ppc_elf_hash_table (link_info);
+ irelend = internal_relocs + isec->reloc_count;
-static bfd_boolean
-ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
- bfd *abfd;
- struct bfd_link_info *info;
- const 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->relocateable
- && sym->st_size <= elf_gp_size (abfd)
- && info->hash->creator->flavour == bfd_target_elf_flavour)
+ for (irel = internal_relocs; irel < irelend; irel++)
{
- /* Common symbols less than or equal to -G nn bytes are automatically
- put into .sdata. */
- elf_linker_section_t *sdata
- = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA);
+ unsigned long r_type = ELF32_R_TYPE (irel->r_info);
+ bfd_vma symaddr, reladdr, toff, roff;
+ asection *tsec;
+ struct one_fixup *f;
+ size_t insn_offset = 0;
+ bfd_vma max_branch_offset, val;
+ bfd_byte *hit_addr;
+ unsigned long t0;
+ unsigned char sym_type;
+
+ switch (r_type)
+ {
+ case R_PPC_REL24:
+ case R_PPC_LOCAL24PC:
+ case R_PPC_PLTREL24:
+ max_branch_offset = 1 << 25;
+ break;
+
+ case R_PPC_REL14:
+ case R_PPC_REL14_BRTAKEN:
+ case R_PPC_REL14_BRNTAKEN:
+ max_branch_offset = 1 << 15;
+ break;
- if (!sdata->bss_section)
+ default:
+ continue;
+ }
+
+ /* Get the value of the symbol referred to by the reloc. */
+ if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
{
- bfd_size_type amt;
-
- /* We don't go through bfd_make_section, because we don't
- want to attach this common section to DYNOBJ. The linker
- will move the symbols to the appropriate output section
- when it defines common symbols. */
- amt = sizeof (asection);
- sdata->bss_section = (asection *) bfd_zalloc (abfd, amt);
- if (sdata->bss_section == NULL)
- return FALSE;
- sdata->bss_section->name = sdata->bss_name;
- sdata->bss_section->flags = SEC_IS_COMMON;
- sdata->bss_section->output_section = sdata->bss_section;
- amt = sizeof (asymbol);
- sdata->bss_section->symbol = (asymbol *) bfd_zalloc (abfd, amt);
- amt = sizeof (asymbol *);
- sdata->bss_section->symbol_ptr_ptr =
- (asymbol **) bfd_zalloc (abfd, amt);
- if (sdata->bss_section->symbol == NULL
- || sdata->bss_section->symbol_ptr_ptr == NULL)
- return FALSE;
- sdata->bss_section->symbol->name = sdata->bss_name;
- sdata->bss_section->symbol->flags = BSF_SECTION_SYM;
- sdata->bss_section->symbol->section = sdata->bss_section;
- *sdata->bss_section->symbol_ptr_ptr = sdata->bss_section->symbol;
+ /* 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 == 0)
+ goto error_return;
+ }
+ isym = isymbuf + ELF32_R_SYM (irel->r_info);
+ if (isym->st_shndx == SHN_UNDEF)
+ continue; /* We can't do anything with undefined symbols. */
+ else if (isym->st_shndx == SHN_ABS)
+ tsec = bfd_abs_section_ptr;
+ else if (isym->st_shndx == SHN_COMMON)
+ tsec = bfd_com_section_ptr;
+ else
+ tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
+
+ toff = isym->st_value;
+ sym_type = ELF_ST_TYPE (isym->st_info);
}
+ else
+ {
+ /* Global symbol handling. */
+ unsigned long indx;
+ struct elf_link_hash_entry *h;
- *secp = sdata->bss_section;
- *valp = sym->st_size;
- }
+ indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
+ h = elf_sym_hashes (abfd)[indx];
- return TRUE;
-}
-\f
-/* Finish up dynamic symbol handling. We set the contents of various
- dynamic sections here. */
+ while (h->root.type == bfd_link_hash_indirect
+ || h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
-static bfd_boolean
-ppc_elf_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;
-{
- bfd *dynobj;
+ if (r_type == R_PPC_PLTREL24
+ && ppc_info->plt != NULL
+ && h->plt.offset != (bfd_vma) -1)
+ {
+ tsec = ppc_info->plt;
+ toff = h->plt.offset;
+ }
+ else if (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ {
+ tsec = h->root.u.def.section;
+ toff = h->root.u.def.value;
+ }
+ else
+ continue;
-#ifdef DEBUG
- fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
- h->root.root.string);
-#endif
+ sym_type = h->type;
+ }
- dynobj = elf_hash_table (info)->dynobj;
- BFD_ASSERT (dynobj != NULL);
+ /* If the branch and target are in the same section, you have
+ no hope of adding stubs. We'll error out later should the
+ branch overflow. */
+ if (tsec == isec)
+ continue;
- if (h->plt.offset != (bfd_vma) -1)
- {
- asection *splt;
- asection *srela;
- Elf_Internal_Rela rela;
- bfd_byte *loc;
- bfd_vma reloc_index;
+ /* There probably isn't any reason to handle symbols in
+ SEC_MERGE sections; SEC_MERGE doesn't seem a likely
+ attribute for a code section, and we are only looking at
+ branches. However, implement it correctly here as a
+ reference for other target relax_section functions. */
+ if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
+ {
+ /* At this stage in linking, no SEC_MERGE symbol has been
+ adjusted, so all references to such symbols need to be
+ passed through _bfd_merged_section_offset. (Later, in
+ relocate_section, all SEC_MERGE symbols *except* for
+ section symbols have been adjusted.)
+
+ gas may reduce relocations against symbols in SEC_MERGE
+ sections to a relocation against the section symbol when
+ the original addend was zero. When the reloc is against
+ a section symbol we should include the addend in the
+ offset passed to _bfd_merged_section_offset, since the
+ location of interest is the original symbol. On the
+ other hand, an access to "sym+addend" where "sym" is not
+ a section symbol should not include the addend; Such an
+ access is presumed to be an offset from "sym"; The
+ location of interest is just "sym". */
+ if (sym_type == STT_SECTION)
+ toff += irel->r_addend;
+
+ toff = _bfd_merged_section_offset (abfd, &tsec,
+ elf_section_data (tsec)->sec_info,
+ toff);
+
+ if (sym_type != STT_SECTION)
+ toff += irel->r_addend;
+ }
+ else
+ toff += irel->r_addend;
-#ifdef DEBUG
- fprintf (stderr, ", plt_offset = %d", h->plt.offset);
-#endif
+ symaddr = tsec->output_section->vma + tsec->output_offset + toff;
- /* This symbol has an entry in the procedure linkage table. Set
- it up. */
+ roff = irel->r_offset;
+ reladdr = isec->output_section->vma + isec->output_offset + roff;
- BFD_ASSERT (h->dynindx != -1);
+ /* If the branch is in range, no need to do anything. */
+ if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
+ continue;
- splt = bfd_get_section_by_name (dynobj, ".plt");
- srela = bfd_get_section_by_name (dynobj, ".rela.plt");
- BFD_ASSERT (splt != NULL && srela != NULL);
+ /* Look for an existing fixup to this address. */
+ for (f = fixups; f ; f = f->next)
+ if (f->tsec == tsec && f->toff == toff)
+ break;
- /* We don't need to fill in the .plt. The ppc dynamic linker
- will fill it in. */
+ if (f == NULL)
+ {
+ size_t size;
+ unsigned long stub_rtype;
+
+ val = trampoff - roff;
+ if (val >= max_branch_offset)
+ /* Oh dear, we can't reach a trampoline. Don't try to add
+ one. We'll report an error later. */
+ continue;
+
+ if (link_info->shared)
+ {
+ size = 4 * ARRAY_SIZE (shared_stub_entry);
+ insn_offset = 12;
+ stub_rtype = R_PPC_RELAX32PC;
+ }
+ else
+ {
+ size = 4 * ARRAY_SIZE (stub_entry);
+ insn_offset = 0;
+ stub_rtype = R_PPC_RELAX32;
+ }
+
+ if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
+ != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
+ abort ();
+ if (tsec == ppc_info->plt)
+ stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
+
+ /* Hijack the old relocation. Since we need two
+ relocations for this use a "composite" reloc. */
+ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ stub_rtype);
+ irel->r_offset = trampoff + insn_offset;
+
+ /* Record the fixup so we don't do it again this section. */
+ f = bfd_malloc (sizeof (*f));
+ f->next = fixups;
+ f->tsec = tsec;
+ f->toff = toff;
+ f->trampoff = trampoff;
+ fixups = f;
+
+ trampoff += size;
+ }
+ else
+ {
+ val = f->trampoff - roff;
+ if (val >= max_branch_offset)
+ continue;
- /* Fill in the entry in the .rela.plt section. */
- rela.r_offset = (splt->output_section->vma
- + splt->output_offset
- + h->plt.offset);
- rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
- rela.r_addend = 0;
+ /* Nop out the reloc, since we're finalizing things here. */
+ irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
+ }
- reloc_index = (h->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_SLOT_SIZE;
- if (reloc_index > PLT_NUM_SINGLE_ENTRIES)
- reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
- loc = srela->contents + reloc_index * sizeof (Elf32_External_Rela);
- bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
+ /* Get the section contents. */
+ if (contents == NULL)
+ {
+ /* Get cached copy if it exists. */
+ if (elf_section_data (isec)->this_hdr.contents != NULL)
+ contents = elf_section_data (isec)->this_hdr.contents;
+ else
+ {
+ /* Go get them off disk. */
+ if (!bfd_malloc_and_get_section (abfd, isec, &contents))
+ goto error_return;
+ }
+ }
- if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
+ /* Fix up the existing branch to hit the trampoline. */
+ hit_addr = contents + roff;
+ switch (r_type)
{
- /* Mark the symbol as undefined, rather than as defined in
- the .plt section. Leave the value alone. */
- sym->st_shndx = SHN_UNDEF;
- /* If the symbol is weak, we do need to clear the value.
- Otherwise, the PLT entry would provide a definition for
- the symbol even if the symbol wasn't defined anywhere,
- and so the symbol would never be NULL. */
- if ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR_NONWEAK)
- == 0)
- sym->st_value = 0;
+ case R_PPC_REL24:
+ case R_PPC_LOCAL24PC:
+ case R_PPC_PLTREL24:
+ t0 = bfd_get_32 (abfd, hit_addr);
+ t0 &= ~0x3fffffc;
+ t0 |= val & 0x3fffffc;
+ bfd_put_32 (abfd, t0, hit_addr);
+ break;
+
+ case R_PPC_REL14:
+ case R_PPC_REL14_BRTAKEN:
+ case R_PPC_REL14_BRNTAKEN:
+ t0 = bfd_get_32 (abfd, hit_addr);
+ t0 &= ~0xfffc;
+ t0 |= val & 0xfffc;
+ bfd_put_32 (abfd, t0, hit_addr);
+ break;
}
}
- if (h->got.offset != (bfd_vma) -1)
+ /* Write out the trampolines. */
+ changed = fixups != NULL;
+ if (fixups != NULL)
{
- asection *sgot;
- asection *srela;
- Elf_Internal_Rela rela;
- bfd_byte *loc;
+ const int *stub;
+ bfd_byte *dest;
+ bfd_vma val;
+ int i, size;
- /* This symbol has an entry in the global offset table. Set it
- up. */
+ do
+ {
+ struct one_fixup *f = fixups;
+ fixups = fixups->next;
+ free (f);
+ }
+ while (fixups);
- sgot = bfd_get_section_by_name (dynobj, ".got");
- srela = bfd_get_section_by_name (dynobj, ".rela.got");
- BFD_ASSERT (sgot != NULL && srela != NULL);
+ contents = bfd_realloc (contents, trampoff);
+ if (contents == NULL)
+ goto error_return;
- rela.r_offset = (sgot->output_section->vma
- + sgot->output_offset
- + (h->got.offset &~ (bfd_vma) 1));
+ isec->size = (isec->size + 3) & (bfd_vma) -4;
+ /* Branch around the trampolines. */
+ val = trampoff - isec->size + 0x48000000;
+ dest = contents + isec->size;
+ isec->size = trampoff;
+ bfd_put_32 (abfd, val, dest);
+ dest += 4;
- /* If this is a -Bsymbolic link, and the symbol is defined
- locally, we just want to emit a RELATIVE reloc. The entry in
- the global offset table will already have been initialized in
- the relocate_section function. */
- if (info->shared
- && SYMBOL_REFERENCES_LOCAL (info, h))
+ if (link_info->shared)
{
- rela.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
- rela.r_addend = (h->root.u.def.value
- + h->root.u.def.section->output_section->vma
- + h->root.u.def.section->output_offset);
+ stub = shared_stub_entry;
+ size = ARRAY_SIZE (shared_stub_entry);
}
else
{
- BFD_ASSERT ((h->got.offset & 1) == 0);
- rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_GLOB_DAT);
- rela.r_addend = 0;
+ stub = stub_entry;
+ size = ARRAY_SIZE (stub_entry);
}
- bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
- loc = srela->contents;
- loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
- bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
+ i = 0;
+ while (dest < contents + trampoff)
+ {
+ bfd_put_32 (abfd, stub[i], dest);
+ i++;
+ if (i == size)
+ i = 0;
+ dest += 4;
+ }
+ BFD_ASSERT (i == 0);
}
- if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
+ if (isymbuf != NULL
+ && symtab_hdr->contents != (unsigned char *) isymbuf)
{
- asection *s;
- Elf_Internal_Rela rela;
- bfd_byte *loc;
-
- /* This symbols needs a copy reloc. Set it up. */
-
-#ifdef DEBUG
- fprintf (stderr, ", copy");
-#endif
-
- BFD_ASSERT (h->dynindx != -1);
-
- if (h->size <= elf_gp_size (dynobj))
- s = bfd_get_section_by_name (h->root.u.def.section->owner,
- ".rela.sbss");
+ if (! link_info->keep_memory)
+ free (isymbuf);
else
- s = bfd_get_section_by_name (h->root.u.def.section->owner,
- ".rela.bss");
- BFD_ASSERT (s != NULL);
-
- rela.r_offset = (h->root.u.def.value
- + h->root.u.def.section->output_section->vma
- + h->root.u.def.section->output_offset);
- rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
- rela.r_addend = 0;
- loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
- bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
+ {
+ /* Cache the symbols for elf_link_input_bfd. */
+ symtab_hdr->contents = (unsigned char *) isymbuf;
+ }
}
-#ifdef DEBUG
- fprintf (stderr, "\n");
-#endif
+ if (contents != NULL
+ && elf_section_data (isec)->this_hdr.contents != contents)
+ {
+ if (!changed && !link_info->keep_memory)
+ free (contents);
+ else
+ {
+ /* Cache the section contents for elf_link_input_bfd. */
+ elf_section_data (isec)->this_hdr.contents = contents;
+ }
+ }
- /* Mark some specially defined symbols as absolute. */
- if (strcmp (h->root.root.string, "_DYNAMIC") == 0
- || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
- || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
- sym->st_shndx = SHN_ABS;
+ if (elf_section_data (isec)->relocs != internal_relocs)
+ {
+ if (!changed)
+ free (internal_relocs);
+ else
+ elf_section_data (isec)->relocs = internal_relocs;
+ }
+ *again = changed;
return TRUE;
+
+ error_return:
+ if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
+ free (isymbuf);
+ if (contents != NULL
+ && elf_section_data (isec)->this_hdr.contents != contents)
+ free (contents);
+ if (internal_relocs != NULL
+ && elf_section_data (isec)->relocs != internal_relocs)
+ free (internal_relocs);
+ return FALSE;
}
\f
-/* Finish up the dynamic sections. */
+/* Set _SDA_BASE_ and _SDA2_BASE. */
-static bfd_boolean
-ppc_elf_finish_dynamic_sections (output_bfd, info)
- bfd *output_bfd;
- struct bfd_link_info *info;
+bfd_boolean
+ppc_elf_set_sdata_syms (bfd *obfd, struct bfd_link_info *info)
{
- asection *sdyn;
- bfd *dynobj = elf_hash_table (info)->dynobj;
- asection *sgot = bfd_get_section_by_name (dynobj, ".got");
-
-#ifdef DEBUG
- fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
-#endif
+ struct ppc_elf_link_hash_table *htab;
+ unsigned i;
- sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
+ htab = ppc_elf_hash_table (info);
- if (elf_hash_table (info)->dynamic_sections_created)
+ for (i = 0; i < 2; i++)
{
- asection *splt;
- Elf32_External_Dyn *dyncon, *dynconend;
-
- splt = bfd_get_section_by_name (dynobj, ".plt");
- BFD_ASSERT (splt != NULL && sdyn != NULL);
+ elf_linker_section_t *lsect = &htab->sdata[i];
+ asection *s;
+ bfd_vma val;
+ struct elf_link_hash_entry *h;
- dyncon = (Elf32_External_Dyn *) sdyn->contents;
- dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
- for (; dyncon < dynconend; dyncon++)
+ s = lsect->section;
+ if (s != NULL)
+ s = s->output_section;
+ if (s == NULL)
+ s = bfd_get_section_by_name (obfd, lsect->name);
+ if (s == NULL)
+ s = bfd_get_section_by_name (obfd, lsect->bss_name);
+
+ val = 0;
+ if (s != NULL)
+ val = s->vma + 32768;
+ lsect->sym_val = val;
+
+ h = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
+ FALSE, FALSE, FALSE);
+ if (h != NULL && h->root.type == bfd_link_hash_undefined)
{
- Elf_Internal_Dyn dyn;
- const char *name;
- bfd_boolean size;
+ h->root.type = bfd_link_hash_defined;
+ h->root.u.def.section = bfd_abs_section_ptr;
+ h->root.u.def.value = val;
+ h->def_regular = 1;
+ h->type = STT_OBJECT;
+ h->other = STV_HIDDEN;
+ }
+ }
+ return TRUE;
+}
+\f
+#define bfd_put_ptr(BFD, VAL, ADDR) bfd_put_32 (BFD, VAL, ADDR)
+
+/* Fill in the address for a pointer generated in a linker section. */
+
+static bfd_vma
+elf_finish_pointer_linker_section (bfd *output_bfd,
+ bfd *input_bfd,
+ struct bfd_link_info *info,
+ elf_linker_section_t *lsect,
+ struct elf_link_hash_entry *h,
+ bfd_vma relocation,
+ const Elf_Internal_Rela *rel)
+{
+ elf_linker_section_pointers_t *linker_section_ptr;
- bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
+ BFD_ASSERT (lsect != NULL);
- switch (dyn.d_tag)
- {
- case DT_PLTGOT: name = ".plt"; size = FALSE; break;
- case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break;
- case DT_JMPREL: name = ".rela.plt"; size = FALSE; break;
- default: name = NULL; size = FALSE; break;
- }
+ if (h != NULL)
+ {
+ /* Handle global symbol. */
+ struct ppc_elf_link_hash_entry *eh;
- if (name != NULL)
- {
- asection *s;
+ eh = (struct ppc_elf_link_hash_entry *) h;
+ linker_section_ptr
+ = elf_find_pointer_linker_section (eh->linker_section_pointer,
+ rel->r_addend,
+ lsect);
- s = bfd_get_section_by_name (output_bfd, name);
- if (s == NULL)
- dyn.d_un.d_val = 0;
- else
- {
- if (! size)
- dyn.d_un.d_ptr = s->vma;
- else
- {
- if (s->_cooked_size != 0)
- dyn.d_un.d_val = s->_cooked_size;
- else
- dyn.d_un.d_val = s->_raw_size;
- }
- }
- bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ BFD_ASSERT (linker_section_ptr != NULL);
+
+ if (! elf_hash_table (info)->dynamic_sections_created
+ || (info->shared
+ && info->symbolic
+ && h->def_regular))
+ {
+ /* This is actually a static link, or it is a
+ -Bsymbolic link and the symbol is defined
+ locally. We must initialize this entry in the
+ global section.
+
+ When doing a dynamic link, we create a .rela.<xxx>
+ relocation entry to initialize the value. This
+ is done in the finish_dynamic_symbol routine. */
+ if (!linker_section_ptr->written_address_p)
+ {
+ linker_section_ptr->written_address_p = TRUE;
+ bfd_put_ptr (output_bfd,
+ relocation + linker_section_ptr->addend,
+ (lsect->section->contents
+ + linker_section_ptr->offset));
}
}
}
-
- /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
- easily find the address of the _GLOBAL_OFFSET_TABLE_. */
- if (sgot)
+ else
{
- unsigned char *contents = sgot->contents;
- bfd_put_32 (output_bfd, (bfd_vma) 0x4e800021 /* blrl */, contents);
+ /* Handle local symbol. */
+ unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
+ BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
+ BFD_ASSERT (elf_local_ptr_offsets (input_bfd)[r_symndx] != NULL);
+ linker_section_ptr = (elf_find_pointer_linker_section
+ (elf_local_ptr_offsets (input_bfd)[r_symndx],
+ rel->r_addend,
+ lsect));
+
+ BFD_ASSERT (linker_section_ptr != NULL);
+
+ /* Write out pointer if it hasn't been rewritten out before. */
+ if (!linker_section_ptr->written_address_p)
+ {
+ linker_section_ptr->written_address_p = TRUE;
+ bfd_put_ptr (output_bfd, relocation + linker_section_ptr->addend,
+ lsect->section->contents + linker_section_ptr->offset);
+ }
+ }
- if (sdyn == NULL)
- bfd_put_32 (output_bfd, (bfd_vma) 0, contents+4);
- else
- bfd_put_32 (output_bfd,
- sdyn->output_section->vma + sdyn->output_offset,
- contents+4);
+ relocation = (lsect->section->output_offset
+ + linker_section_ptr->offset
+ - 0x8000);
- elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
- }
+#ifdef DEBUG
+ fprintf (stderr,
+ "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
+ lsect->name, (long) relocation, (long) relocation);
+#endif
- return TRUE;
+ /* Subtract out the addend, because it will get added back in by the normal
+ processing. */
+ return relocation - linker_section_ptr->addend;
}
-\f
+
/* The RELOCATE_SECTION function is called by the ELF backend linker
to handle the relocations for a section.
This function is responsible for adjust the section contents as
necessary, and (if using Rela relocs and generating a
- relocateable output file) adjusting the reloc addend as
+ relocatable output file) adjusting the reloc addend as
necessary.
This function does not have to worry about setting the reloc
The global hash table entry for the global symbols can be found
via elf_sym_hashes (input_bfd).
- When generating relocateable output, this function must handle
+ When generating relocatable output, this function must handle
STB_LOCAL/STT_SECTION symbols specially. The output symbol is
going to be the section symbol corresponding to the output
section, which means that the addend must be adjusted
accordingly. */
static bfd_boolean
-ppc_elf_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;
+ppc_elf_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_tdata (input_bfd)->symtab_hdr;
- struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
- bfd *dynobj = elf_hash_table (info)->dynobj;
- elf_linker_section_t *sdata = NULL;
- elf_linker_section_t *sdata2 = NULL;
- Elf_Internal_Rela *rel = relocs;
- Elf_Internal_Rela *relend = relocs + input_section->reloc_count;
+ Elf_Internal_Shdr *symtab_hdr;
+ struct elf_link_hash_entry **sym_hashes;
+ struct ppc_elf_link_hash_table *htab;
+ Elf_Internal_Rela *rel;
+ Elf_Internal_Rela *relend;
+ Elf_Internal_Rela outrel;
+ bfd_byte *loc;
asection *sreloc = NULL;
- asection *splt;
- asection *sgot;
bfd_vma *local_got_offsets;
bfd_boolean ret = TRUE;
- long insn;
-
- if (dynobj)
- {
- sdata = elf_linker_section (dynobj, LINKER_SECTION_SDATA);
- sdata2 = elf_linker_section (dynobj, LINKER_SECTION_SDATA2);
- }
#ifdef DEBUG
- fprintf (stderr, "ppc_elf_relocate_section called for %s section %s, %ld relocations%s\n",
- bfd_archive_filename (input_bfd),
- bfd_section_name(input_bfd, input_section),
- (long) input_section->reloc_count,
- (info->relocateable) ? " (relocatable)" : "");
+ _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
+ "%ld relocations%s",
+ input_bfd, input_section,
+ (long) input_section->reloc_count,
+ (info->relocatable) ? " (relocatable)" : "");
#endif
- if (info->relocateable)
+ if (info->relocatable)
return TRUE;
+ /* Initialize howto table if not already done. */
if (!ppc_elf_howto_table[R_PPC_ADDR32])
- /* Initialize howto table if needed. */
ppc_elf_howto_init ();
+ htab = ppc_elf_hash_table (info);
local_got_offsets = elf_local_got_offsets (input_bfd);
-
- splt = sgot = NULL;
- if (dynobj != NULL)
- {
- splt = bfd_get_section_by_name (dynobj, ".plt");
- sgot = bfd_get_section_by_name (dynobj, ".got");
- }
-
+ symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
+ sym_hashes = elf_sym_hashes (input_bfd);
+ rel = relocs;
+ relend = relocs + input_section->reloc_count;
for (; rel < relend; rel++)
{
- enum elf_ppc_reloc_type r_type = (enum elf_ppc_reloc_type)ELF32_R_TYPE (rel->r_info);
- bfd_vma offset = rel->r_offset;
- bfd_vma addend = rel->r_addend;
- bfd_reloc_status_type r = bfd_reloc_other;
- Elf_Internal_Sym *sym = (Elf_Internal_Sym *) 0;
- asection *sec = (asection *) 0;
- struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) 0;
- const char *sym_name = (const char *) 0;
+ enum elf_ppc_reloc_type r_type;
+ bfd_vma addend;
+ bfd_reloc_status_type r;
+ Elf_Internal_Sym *sym;
+ asection *sec;
+ struct elf_link_hash_entry *h;
+ const char *sym_name;
reloc_howto_type *howto;
unsigned long r_symndx;
bfd_vma relocation;
- int will_become_local;
-
- /* Unknown relocation handling */
- if ((unsigned) r_type >= (unsigned) R_PPC_max
- || !ppc_elf_howto_table[(int) r_type])
- {
- (*_bfd_error_handler) (_("%s: unknown relocation type %d"),
- bfd_archive_filename (input_bfd),
- (int) r_type);
-
- bfd_set_error (bfd_error_bad_value);
- ret = FALSE;
- continue;
- }
-
- howto = ppc_elf_howto_table[(int) r_type];
+ bfd_vma branch_bit, insn, from;
+ bfd_boolean unresolved_reloc;
+ bfd_boolean warned;
+ unsigned int tls_type, tls_mask, tls_gd;
+
+ r_type = ELF32_R_TYPE (rel->r_info);
+ sym = NULL;
+ sec = NULL;
+ h = NULL;
+ unresolved_reloc = FALSE;
+ warned = FALSE;
r_symndx = ELF32_R_SYM (rel->r_info);
if (r_symndx < symtab_hdr->sh_info)
{
sym = local_syms + r_symndx;
sec = local_sections[r_symndx];
- sym_name = "<local symbol>";
+ sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym);
- relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
- addend = rel->r_addend;
- /* Relocs to local symbols are always resolved. */
- will_become_local = 1;
+ relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
}
else
{
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- while (h->root.type == bfd_link_hash_indirect
- || h->root.type == bfd_link_hash_warning)
- h = (struct elf_link_hash_entry *) h->root.u.i.link;
+ RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
+ r_symndx, symtab_hdr, sym_hashes,
+ h, sec, relocation,
+ unresolved_reloc, warned);
+
sym_name = h->root.root.string;
+ }
+
+ /* TLS optimizations. Replace instruction sequences and relocs
+ based on information we collected in tls_optimize. We edit
+ RELOCS so that --emit-relocs will output something sensible
+ for the final instruction stream. */
+ tls_mask = 0;
+ tls_gd = 0;
+ if (IS_PPC_TLS_RELOC (r_type))
+ {
+ if (h != NULL)
+ tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
+ else if (local_got_offsets != NULL)
+ {
+ char *lgot_masks;
+ lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
+ tls_mask = lgot_masks[r_symndx];
+ }
+ }
- /* Can this relocation be resolved immediately? */
- will_become_local = SYMBOL_REFERENCES_LOCAL (info, h);
+ /* Ensure reloc mapping code below stays sane. */
+ if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
+ || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
+ || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
+ || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
+ || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
+ || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
+ || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
+ || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
+ abort ();
+ switch (r_type)
+ {
+ default:
+ break;
- if (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
+ case R_PPC_GOT_TPREL16:
+ case R_PPC_GOT_TPREL16_LO:
+ if (tls_mask != 0
+ && (tls_mask & TLS_TPREL) == 0)
{
- sec = h->root.u.def.section;
- if (((r_type == R_PPC_PLT32
- || r_type == R_PPC_PLTREL24)
- && splt != NULL
- && h->plt.offset != (bfd_vma) -1)
- || (r_type == R_PPC_LOCAL24PC
- && sec->output_section == NULL)
- || ((r_type == R_PPC_GOT16
- || r_type == R_PPC_GOT16_LO
- || r_type == R_PPC_GOT16_HI
- || r_type == R_PPC_GOT16_HA)
- && elf_hash_table (info)->dynamic_sections_created
- && (! info->shared || ! will_become_local))
- || (info->shared
- && ! will_become_local
- && ((input_section->flags & SEC_ALLOC) != 0
- /* Testing SEC_DEBUGGING here may be wrong.
- It's here to avoid a crash when
- generating a shared library with DWARF
- debugging information. */
- || ((input_section->flags & SEC_DEBUGGING) != 0
- && (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
- && (r_type == R_PPC_ADDR32
- || r_type == R_PPC_ADDR24
- || r_type == R_PPC_ADDR16
- || r_type == R_PPC_ADDR16_LO
- || r_type == R_PPC_ADDR16_HI
- || r_type == R_PPC_ADDR16_HA
- || r_type == R_PPC_ADDR14
- || r_type == R_PPC_ADDR14_BRTAKEN
- || r_type == R_PPC_ADDR14_BRNTAKEN
- || r_type == R_PPC_COPY
- || r_type == R_PPC_GLOB_DAT
- || r_type == R_PPC_JMP_SLOT
- || r_type == R_PPC_UADDR32
- || r_type == R_PPC_UADDR16
- || r_type == R_PPC_SDAREL16
- || r_type == R_PPC_EMB_NADDR32
- || r_type == R_PPC_EMB_NADDR16
- || r_type == R_PPC_EMB_NADDR16_LO
- || r_type == R_PPC_EMB_NADDR16_HI
- || r_type == R_PPC_EMB_NADDR16_HA
- || r_type == R_PPC_EMB_SDAI16
- || r_type == R_PPC_EMB_SDA2I16
- || r_type == R_PPC_EMB_SDA2REL
- || r_type == R_PPC_EMB_SDA21
- || r_type == R_PPC_EMB_MRKREF
- || r_type == R_PPC_EMB_BIT_FLD
- || r_type == R_PPC_EMB_RELSDA
- || ((r_type == R_PPC_REL24
- || r_type == R_PPC_REL32
- || r_type == R_PPC_REL14
- || r_type == R_PPC_REL14_BRTAKEN
- || r_type == R_PPC_REL14_BRNTAKEN
- || r_type == R_PPC_RELATIVE)
- && strcmp (h->root.root.string,
- "_GLOBAL_OFFSET_TABLE_") != 0))))
- {
- /* In these cases, we don't need the relocation
- value. We check specially because in some
- obscure cases sec->output_section will be NULL. */
- relocation = 0;
- }
- else if (sec->output_section == NULL)
+ bfd_vma insn;
+ insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
+ insn &= 31 << 21;
+ insn |= 0x3c020000; /* addis 0,2,0 */
+ bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
+ r_type = R_PPC_TPREL16_HA;
+ rel->r_info = ELF32_R_INFO (r_symndx, r_type);
+ }
+ break;
+
+ case R_PPC_TLS:
+ if (tls_mask != 0
+ && (tls_mask & TLS_TPREL) == 0)
+ {
+ bfd_vma insn, rtra;
+ insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
+ if ((insn & ((31 << 26) | (31 << 11)))
+ == ((31 << 26) | (2 << 11)))
+ rtra = insn & ((1 << 26) - (1 << 16));
+ else if ((insn & ((31 << 26) | (31 << 16)))
+ == ((31 << 26) | (2 << 16)))
+ rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
+ else
+ abort ();
+ if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
+ /* add -> addi. */
+ insn = 14 << 26;
+ else if ((insn & (31 << 1)) == 23 << 1
+ && ((insn & (31 << 6)) < 14 << 6
+ || ((insn & (31 << 6)) >= 16 << 6
+ && (insn & (31 << 6)) < 24 << 6)))
+ /* load and store indexed -> dform. */
+ insn = (32 | ((insn >> 6) & 31)) << 26;
+ else if ((insn & (31 << 1)) == 21 << 1
+ && (insn & (0x1a << 6)) == 0)
+ /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
+ insn = (((58 | ((insn >> 6) & 4)) << 26)
+ | ((insn >> 6) & 1));
+ else if ((insn & (31 << 1)) == 21 << 1
+ && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
+ /* lwax -> lwa. */
+ insn = (58 << 26) | 2;
+ else
+ abort ();
+ insn |= rtra;
+ bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
+ r_type = R_PPC_TPREL16_LO;
+ rel->r_info = ELF32_R_INFO (r_symndx, r_type);
+ /* Was PPC_TLS which sits on insn boundary, now
+ PPC_TPREL16_LO which is at insn+2. */
+ rel->r_offset += 2;
+ }
+ break;
+
+ case R_PPC_GOT_TLSGD16_HI:
+ case R_PPC_GOT_TLSGD16_HA:
+ tls_gd = TLS_TPRELGD;
+ if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
+ goto tls_gdld_hi;
+ break;
+
+ case R_PPC_GOT_TLSLD16_HI:
+ case R_PPC_GOT_TLSLD16_HA:
+ if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
+ {
+ tls_gdld_hi:
+ if ((tls_mask & tls_gd) != 0)
+ r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
+ + R_PPC_GOT_TPREL16);
+ else
{
- (*_bfd_error_handler)
- (_("%s: warning: unresolvable relocation against symbol `%s' from %s section"),
- bfd_archive_filename (input_bfd), h->root.root.string,
- bfd_get_section_name (input_bfd, input_section));
- relocation = 0;
+ bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
+ rel->r_offset -= 2;
+ r_type = R_PPC_NONE;
}
- else
- relocation = (h->root.u.def.value
- + sec->output_section->vma
- + sec->output_offset);
+ rel->r_info = ELF32_R_INFO (r_symndx, r_type);
}
- else if (h->root.type == bfd_link_hash_undefweak)
- relocation = 0;
- else if (info->shared
- && (!info->symbolic || info->allow_shlib_undefined)
- && !info->no_undefined
- && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
- relocation = 0;
- else
+ break;
+
+ case R_PPC_GOT_TLSGD16:
+ case R_PPC_GOT_TLSGD16_LO:
+ tls_gd = TLS_TPRELGD;
+ if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
+ goto tls_get_addr_check;
+ break;
+
+ case R_PPC_GOT_TLSLD16:
+ case R_PPC_GOT_TLSLD16_LO:
+ if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
{
- if (! (*info->callbacks->undefined_symbol) (info,
- h->root.root.string,
- input_bfd,
- input_section,
- rel->r_offset,
- (!info->shared
- || info->no_undefined
- || ELF_ST_VISIBILITY (h->other))))
- return FALSE;
- relocation = 0;
+ tls_get_addr_check:
+ if (rel + 1 < relend)
+ {
+ enum elf_ppc_reloc_type r_type2;
+ unsigned long r_symndx2;
+ struct elf_link_hash_entry *h2;
+ bfd_vma insn1, insn2;
+ bfd_vma offset;
+
+ /* The next instruction should be a call to
+ __tls_get_addr. Peek at the reloc to be sure. */
+ r_type2 = ELF32_R_TYPE (rel[1].r_info);
+ r_symndx2 = ELF32_R_SYM (rel[1].r_info);
+ if (r_symndx2 < symtab_hdr->sh_info
+ || (r_type2 != R_PPC_REL14
+ && r_type2 != R_PPC_REL14_BRTAKEN
+ && r_type2 != R_PPC_REL14_BRNTAKEN
+ && r_type2 != R_PPC_REL24
+ && r_type2 != R_PPC_PLTREL24))
+ break;
+
+ h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
+ while (h2->root.type == bfd_link_hash_indirect
+ || h2->root.type == bfd_link_hash_warning)
+ h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
+ if (h2 == NULL || h2 != htab->tls_get_addr)
+ break;
+
+ /* OK, it checks out. Replace the call. */
+ offset = rel[1].r_offset;
+ insn1 = bfd_get_32 (output_bfd,
+ contents + rel->r_offset - 2);
+ if ((tls_mask & tls_gd) != 0)
+ {
+ /* IE */
+ insn1 &= (1 << 26) - 1;
+ insn1 |= 32 << 26; /* lwz */
+ insn2 = 0x7c631214; /* add 3,3,2 */
+ rel[1].r_info = ELF32_R_INFO (r_symndx2, R_PPC_NONE);
+ r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
+ + R_PPC_GOT_TPREL16);
+ rel->r_info = ELF32_R_INFO (r_symndx, r_type);
+ }
+ else
+ {
+ /* LE */
+ insn1 = 0x3c620000; /* addis 3,2,0 */
+ insn2 = 0x38630000; /* addi 3,3,0 */
+ if (tls_gd == 0)
+ {
+ /* Was an LD reloc. */
+ r_symndx = 0;
+ rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
+ rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
+ }
+ r_type = R_PPC_TPREL16_HA;
+ rel->r_info = ELF32_R_INFO (r_symndx, r_type);
+ rel[1].r_info = ELF32_R_INFO (r_symndx,
+ R_PPC_TPREL16_LO);
+ rel[1].r_offset += 2;
+ }
+ bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
+ bfd_put_32 (output_bfd, insn2, contents + offset);
+ if (tls_gd == 0)
+ {
+ /* We changed the symbol on an LD reloc. Start over
+ in order to get h, sym, sec etc. right. */
+ rel--;
+ continue;
+ }
+ }
}
+ break;
+ }
+
+ /* Handle other relocations that tweak non-addend part of insn. */
+ branch_bit = 0;
+ switch (r_type)
+ {
+ default:
+ break;
+
+ /* Branch taken prediction relocations. */
+ case R_PPC_ADDR14_BRTAKEN:
+ case R_PPC_REL14_BRTAKEN:
+ branch_bit = BRANCH_PREDICT_BIT;
+ /* Fall thru */
+
+ /* Branch not taken prediction relocations. */
+ case R_PPC_ADDR14_BRNTAKEN:
+ case R_PPC_REL14_BRNTAKEN:
+ insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
+ insn &= ~BRANCH_PREDICT_BIT;
+ insn |= branch_bit;
+
+ from = (rel->r_offset
+ + input_section->output_offset
+ + input_section->output_section->vma);
+
+ /* Invert 'y' bit if not the default. */
+ if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
+ insn ^= BRANCH_PREDICT_BIT;
+
+ bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
+ break;
}
- switch ((int) r_type)
- {
- default:
- (*_bfd_error_handler) (_("%s: unknown relocation type %d for symbol %s"),
- bfd_archive_filename (input_bfd),
- (int) r_type, sym_name);
+ addend = rel->r_addend;
+ tls_type = 0;
+ howto = NULL;
+ if (r_type < R_PPC_max)
+ howto = ppc_elf_howto_table[r_type];
+ switch (r_type)
+ {
+ default:
+ (*_bfd_error_handler)
+ (_("%B: unknown relocation type %d for symbol %s"),
+ input_bfd, (int) r_type, sym_name);
+
+ bfd_set_error (bfd_error_bad_value);
+ ret = FALSE;
+ continue;
+
+ case R_PPC_NONE:
+ case R_PPC_TLS:
+ case R_PPC_EMB_MRKREF:
+ case R_PPC_GNU_VTINHERIT:
+ case R_PPC_GNU_VTENTRY:
+ continue;
+
+ /* GOT16 relocations. Like an ADDR16 using the symbol's
+ address in the GOT as relocation value instead of the
+ symbol's value itself. Also, create a GOT entry for the
+ symbol and put the symbol value there. */
+ case R_PPC_GOT_TLSGD16:
+ case R_PPC_GOT_TLSGD16_LO:
+ case R_PPC_GOT_TLSGD16_HI:
+ case R_PPC_GOT_TLSGD16_HA:
+ tls_type = TLS_TLS | TLS_GD;
+ goto dogot;
+
+ case R_PPC_GOT_TLSLD16:
+ case R_PPC_GOT_TLSLD16_LO:
+ case R_PPC_GOT_TLSLD16_HI:
+ case R_PPC_GOT_TLSLD16_HA:
+ tls_type = TLS_TLS | TLS_LD;
+ goto dogot;
+
+ case R_PPC_GOT_TPREL16:
+ case R_PPC_GOT_TPREL16_LO:
+ case R_PPC_GOT_TPREL16_HI:
+ case R_PPC_GOT_TPREL16_HA:
+ tls_type = TLS_TLS | TLS_TPREL;
+ goto dogot;
+
+ case R_PPC_GOT_DTPREL16:
+ case R_PPC_GOT_DTPREL16_LO:
+ case R_PPC_GOT_DTPREL16_HI:
+ case R_PPC_GOT_DTPREL16_HA:
+ tls_type = TLS_TLS | TLS_DTPREL;
+ goto dogot;
+
+ case R_PPC_GOT16:
+ case R_PPC_GOT16_LO:
+ case R_PPC_GOT16_HI:
+ case R_PPC_GOT16_HA:
+ dogot:
+ {
+ /* Relocation is to the entry for this symbol in the global
+ offset table. */
+ bfd_vma off;
+ bfd_vma *offp;
+ unsigned long indx;
+
+ if (htab->got == NULL)
+ abort ();
+
+ indx = 0;
+ if (tls_type == (TLS_TLS | TLS_LD)
+ && (h == NULL
+ || !h->def_dynamic))
+ offp = &htab->tlsld_got.offset;
+ else if (h != NULL)
+ {
+ bfd_boolean dyn;
+ dyn = htab->elf.dynamic_sections_created;
+ if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
+ || (info->shared
+ && SYMBOL_REFERENCES_LOCAL (info, h)))
+ /* This is actually a static link, or it is a
+ -Bsymbolic link and the symbol is defined
+ locally, or the symbol was forced to be local
+ because of a version file. */
+ ;
+ else
+ {
+ indx = h->dynindx;
+ unresolved_reloc = FALSE;
+ }
+ offp = &h->got.offset;
+ }
+ else
+ {
+ if (local_got_offsets == NULL)
+ abort ();
+ offp = &local_got_offsets[r_symndx];
+ }
+
+ /* The offset must always be a multiple of 4. We use the
+ least significant bit to record whether we have already
+ processed this entry. */
+ off = *offp;
+ if ((off & 1) != 0)
+ off &= ~1;
+ else
+ {
+ unsigned int tls_m = (tls_mask
+ & (TLS_LD | TLS_GD | TLS_DTPREL
+ | TLS_TPREL | TLS_TPRELGD));
+
+ if (offp == &htab->tlsld_got.offset)
+ tls_m = TLS_LD;
+ else if (h == NULL
+ || !h->def_dynamic)
+ tls_m &= ~TLS_LD;
+
+ /* We might have multiple got entries for this sym.
+ Initialize them all. */
+ do
+ {
+ int tls_ty = 0;
+
+ if ((tls_m & TLS_LD) != 0)
+ {
+ tls_ty = TLS_TLS | TLS_LD;
+ tls_m &= ~TLS_LD;
+ }
+ else if ((tls_m & TLS_GD) != 0)
+ {
+ tls_ty = TLS_TLS | TLS_GD;
+ tls_m &= ~TLS_GD;
+ }
+ else if ((tls_m & TLS_DTPREL) != 0)
+ {
+ tls_ty = TLS_TLS | TLS_DTPREL;
+ tls_m &= ~TLS_DTPREL;
+ }
+ else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
+ {
+ tls_ty = TLS_TLS | TLS_TPREL;
+ tls_m = 0;
+ }
+
+ /* Generate relocs for the dynamic linker. */
+ if ((info->shared || indx != 0)
+ && (h == NULL
+ || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ || h->root.type != bfd_link_hash_undefweak))
+ {
+ outrel.r_offset = (htab->got->output_section->vma
+ + htab->got->output_offset
+ + off);
+ outrel.r_addend = 0;
+ if (tls_ty & (TLS_LD | TLS_GD))
+ {
+ outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
+ if (tls_ty == (TLS_TLS | TLS_GD))
+ {
+ loc = htab->relgot->contents;
+ loc += (htab->relgot->reloc_count++
+ * sizeof (Elf32_External_Rela));
+ bfd_elf32_swap_reloca_out (output_bfd,
+ &outrel, loc);
+ outrel.r_offset += 4;
+ outrel.r_info
+ = ELF32_R_INFO (indx, R_PPC_DTPREL32);
+ }
+ }
+ else if (tls_ty == (TLS_TLS | TLS_DTPREL))
+ outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
+ else if (tls_ty == (TLS_TLS | TLS_TPREL))
+ outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
+ else if (indx == 0)
+ outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
+ else
+ outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
+ if (indx == 0)
+ {
+ outrel.r_addend += relocation;
+ if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
+ outrel.r_addend -= htab->elf.tls_sec->vma;
+ }
+ loc = htab->relgot->contents;
+ loc += (htab->relgot->reloc_count++
+ * sizeof (Elf32_External_Rela));
+ bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
+ }
+
+ /* Init the .got section contents if we're not
+ emitting a reloc. */
+ else
+ {
+ bfd_vma value = relocation;
+
+ if (tls_ty == (TLS_TLS | TLS_LD))
+ value = 1;
+ else if (tls_ty != 0)
+ {
+ value -= htab->elf.tls_sec->vma + DTP_OFFSET;
+ if (tls_ty == (TLS_TLS | TLS_TPREL))
+ value += DTP_OFFSET - TP_OFFSET;
+
+ if (tls_ty == (TLS_TLS | TLS_GD))
+ {
+ bfd_put_32 (output_bfd, value,
+ htab->got->contents + off + 4);
+ value = 1;
+ }
+ }
+ bfd_put_32 (output_bfd, value,
+ htab->got->contents + off);
+ }
+
+ off += 4;
+ if (tls_ty & (TLS_LD | TLS_GD))
+ off += 4;
+ }
+ while (tls_m != 0);
+
+ off = *offp;
+ *offp = off | 1;
+ }
- bfd_set_error (bfd_error_bad_value);
- ret = FALSE;
- continue;
+ if (off >= (bfd_vma) -2)
+ abort ();
- case (int) R_PPC_NONE:
- continue;
+ if ((tls_type & TLS_TLS) != 0)
+ {
+ if (tls_type != (TLS_TLS | TLS_LD))
+ {
+ if ((tls_mask & TLS_LD) != 0
+ && !(h == NULL
+ || !h->def_dynamic))
+ off += 8;
+ if (tls_type != (TLS_TLS | TLS_GD))
+ {
+ if ((tls_mask & TLS_GD) != 0)
+ off += 8;
+ if (tls_type != (TLS_TLS | TLS_DTPREL))
+ {
+ if ((tls_mask & TLS_DTPREL) != 0)
+ off += 4;
+ }
+ }
+ }
+ }
+
+ relocation = htab->got->output_offset + off - 4;
+
+ /* Addends on got relocations don't make much sense.
+ x+off@got is actually x@got+off, and since the got is
+ generated by a hash table traversal, the value in the
+ got at entry m+n bears little relation to the entry m. */
+ if (addend != 0)
+ (*_bfd_error_handler)
+ (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
+ input_bfd,
+ input_section,
+ (long) rel->r_offset,
+ howto->name,
+ sym_name);
+ }
+ break;
/* Relocations that need no special processing. */
- case (int) R_PPC_LOCAL24PC:
+ case R_PPC_LOCAL24PC:
/* It makes no sense to point a local relocation
at a symbol not in this object. */
- if (h != NULL
- && (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- && sec->output_section == NULL)
+ if (unresolved_reloc)
{
if (! (*info->callbacks->undefined_symbol) (info,
h->root.root.string,
}
break;
- /* Relocations that may need to be propagated if this is a shared
- object. */
- case (int) R_PPC_REL24:
- case (int) R_PPC_REL32:
- case (int) R_PPC_REL14:
+ case R_PPC_DTPREL16:
+ case R_PPC_DTPREL16_LO:
+ case R_PPC_DTPREL16_HI:
+ case R_PPC_DTPREL16_HA:
+ addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
+ break;
+
+ /* Relocations that may need to be propagated if this is a shared
+ object. */
+ case R_PPC_TPREL16:
+ case R_PPC_TPREL16_LO:
+ case R_PPC_TPREL16_HI:
+ case R_PPC_TPREL16_HA:
+ addend -= htab->elf.tls_sec->vma + TP_OFFSET;
+ /* The TPREL16 relocs shouldn't really be used in shared
+ libs as they will result in DT_TEXTREL being set, but
+ support them anyway. */
+ goto dodyn;
+
+ case R_PPC_TPREL32:
+ addend -= htab->elf.tls_sec->vma + TP_OFFSET;
+ goto dodyn;
+
+ case R_PPC_DTPREL32:
+ addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
+ goto dodyn;
+
+ case R_PPC_DTPMOD32:
+ relocation = 1;
+ addend = 0;
+ goto dodyn;
+
+ case R_PPC_REL24:
+ case R_PPC_REL32:
+ case R_PPC_REL14:
+ case R_PPC_REL14_BRTAKEN:
+ case R_PPC_REL14_BRNTAKEN:
/* If these relocations are not to a named symbol, they can be
handled right here, no need to bother the dynamic linker. */
- if (h == NULL
- || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
- || SYMBOL_REFERENCES_LOCAL (info, h))
+ if (SYMBOL_REFERENCES_LOCAL (info, h)
+ || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
+ break;
+ /* fall through */
+
+ /* Relocations that always need to be propagated if this is a shared
+ object. */
+ case R_PPC_ADDR32:
+ case R_PPC_ADDR24:
+ case R_PPC_ADDR16:
+ case R_PPC_ADDR16_LO:
+ case R_PPC_ADDR16_HI:
+ case R_PPC_ADDR16_HA:
+ case R_PPC_ADDR14:
+ case R_PPC_ADDR14_BRTAKEN:
+ case R_PPC_ADDR14_BRNTAKEN:
+ case R_PPC_UADDR32:
+ case R_PPC_UADDR16:
+ /* r_symndx will be zero only for relocs against symbols
+ from removed linkonce sections, or sections discarded by
+ a linker script. */
+ dodyn:
+ if (r_symndx == 0)
break;
- /* fall through */
-
- /* Relocations that always need to be propagated if this is a shared
- object. */
- case (int) R_PPC_ADDR32:
- case (int) R_PPC_ADDR24:
- case (int) R_PPC_ADDR16:
- case (int) R_PPC_ADDR16_LO:
- case (int) R_PPC_ADDR16_HI:
- case (int) R_PPC_ADDR16_HA:
- case (int) R_PPC_ADDR14:
- case (int) R_PPC_UADDR32:
- case (int) R_PPC_UADDR16:
- if (info->shared && r_symndx != 0)
+ /* Fall thru. */
+
+ if ((info->shared
+ && (h == NULL
+ || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ || h->root.type != bfd_link_hash_undefweak)
+ && (MUST_BE_DYN_RELOC (r_type)
+ || !SYMBOL_CALLS_LOCAL (info, h)))
+ || (ELIMINATE_COPY_RELOCS
+ && !info->shared
+ && (input_section->flags & SEC_ALLOC) != 0
+ && h != NULL
+ && h->dynindx != -1
+ && !h->non_got_ref
+ && h->def_dynamic
+ && !h->def_regular))
{
- Elf_Internal_Rela outrel;
- bfd_byte *loc;
int skip;
#ifdef DEBUG
- fprintf (stderr, "ppc_elf_relocate_section need to create relocation for %s\n",
- (h && h->root.root.string) ? h->root.root.string : "<unknown>");
+ fprintf (stderr, "ppc_elf_relocate_section needs to "
+ "create relocation for %s\n",
+ (h && h->root.root.string
+ ? h->root.root.string : "<unknown>"));
#endif
/* When generating a shared object, these relocations
- are copied into the output file to be resolved at run
- time. */
-
+ are copied into the output file to be resolved at run
+ time. */
if (sreloc == NULL)
{
const char *name;
input_section),
name + 5) == 0);
- sreloc = bfd_get_section_by_name (dynobj, name);
+ sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
BFD_ASSERT (sreloc != NULL);
}
if (skip)
memset (&outrel, 0, sizeof outrel);
- /* h->dynindx may be -1 if this symbol was marked to
- become local. */
- else if (! will_become_local)
+ else if (!SYMBOL_REFERENCES_LOCAL (info, h))
{
+ unresolved_reloc = FALSE;
outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
outrel.r_addend = rel->r_addend;
}
{
long indx;
- if (h == NULL)
- sec = local_sections[r_symndx];
- else
- {
- BFD_ASSERT (h->root.type == bfd_link_hash_defined
- || (h->root.type
- == bfd_link_hash_defweak));
- sec = h->root.u.def.section;
- }
-
if (bfd_is_abs_section (sec))
indx = 0;
else if (sec == NULL || sec->owner == NULL)
BFD_ASSERT (indx > 0);
#ifdef DEBUG
if (indx <= 0)
- {
- printf ("indx=%d section=%s flags=%08x name=%s\n",
- indx, osec->name, osec->flags,
- h->root.root.string);
- }
+ printf ("indx=%d section=%s flags=%08x name=%s\n",
+ indx, osec->name, osec->flags,
+ h->root.root.string);
#endif
}
break;
}
}
-
- /* Arithmetic adjust relocations that aren't going into a
- shared object. */
- if (r_type == R_PPC_ADDR16_HA
- /* It's just possible that this symbol is a weak symbol
- that's not actually defined anywhere. In that case,
- 'sec' would be NULL, and we should leave the symbol
- alone (it will be set to zero elsewhere in the link). */
- && sec != NULL)
- {
- addend += ((relocation + addend) & 0x8000) << 1;
- }
- break;
-
- /* branch taken prediction relocations */
- case (int) R_PPC_ADDR14_BRTAKEN:
- case (int) R_PPC_REL14_BRTAKEN:
- insn = bfd_get_32 (output_bfd, contents + offset);
- if ((relocation - offset) & 0x8000)
- insn &= ~BRANCH_PREDICT_BIT;
- else
- insn |= BRANCH_PREDICT_BIT;
- bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset);
- break;
-
- /* branch not taken predicition relocations */
- case (int) R_PPC_ADDR14_BRNTAKEN:
- case (int) R_PPC_REL14_BRNTAKEN:
- insn = bfd_get_32 (output_bfd, contents + offset);
- if ((relocation - offset) & 0x8000)
- insn |= BRANCH_PREDICT_BIT;
- else
- insn &= ~BRANCH_PREDICT_BIT;
- bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset);
break;
- /* GOT16 relocations */
- case (int) R_PPC_GOT16:
- case (int) R_PPC_GOT16_LO:
- case (int) R_PPC_GOT16_HI:
- case (int) R_PPC_GOT16_HA:
- /* Relocation is to the entry for this symbol in the global
- offset table. */
- BFD_ASSERT (sgot != NULL);
-
- if (h != NULL)
- {
- bfd_vma off;
-
- off = h->got.offset;
- BFD_ASSERT (off != (bfd_vma) -1);
+ case R_PPC_RELAX32PC_PLT:
+ case R_PPC_RELAX32_PLT:
+ BFD_ASSERT (h != NULL
+ && h->plt.offset != (bfd_vma) -1
+ && htab->plt != NULL);
- if (! elf_hash_table (info)->dynamic_sections_created
- || (info->shared
- && SYMBOL_REFERENCES_LOCAL (info, h)))
- {
- /* This is actually a static link, or it is a
- -Bsymbolic link and the symbol is defined
- locally. We must initialize this entry in the
- global offset table. Since the offset must
- always be a multiple of 4, we use the least
- significant bit to record whether we have
- initialized it already.
-
- When doing a dynamic link, we create a .rela.got
- relocation entry to initialize the value. This
- is done in the finish_dynamic_symbol routine. */
- if ((off & 1) != 0)
- off &= ~1;
- else
- {
- bfd_put_32 (output_bfd, relocation,
- sgot->contents + off);
- h->got.offset |= 1;
- }
- }
-
- relocation = sgot->output_offset + off - 4;
- }
- else
- {
- bfd_vma off;
-
- BFD_ASSERT (local_got_offsets != NULL
- && local_got_offsets[r_symndx] != (bfd_vma) -1);
-
- off = local_got_offsets[r_symndx];
+ relocation = (htab->plt->output_section->vma
+ + htab->plt->output_offset
+ + h->plt.offset);
+ if (r_type == R_PPC_RELAX32_PLT)
+ goto relax32;
+ /* Fall thru */
+
+ case R_PPC_RELAX32PC:
+ relocation -= (input_section->output_section->vma
+ + input_section->output_offset
+ + rel->r_offset - 4);
+ /* Fall thru */
+
+ case R_PPC_RELAX32:
+ relax32:
+ {
+ unsigned long t0;
+ unsigned long t1;
- /* The offset must always be a multiple of 4. We use
- the least significant bit to record whether we have
- already processed this entry. */
- if ((off & 1) != 0)
- off &= ~1;
- else
- {
+ t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
+ t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
- if (info->shared)
- {
- asection *srelgot;
- Elf_Internal_Rela outrel;
- bfd_byte *loc;
-
- /* We need to generate a R_PPC_RELATIVE reloc
- for the dynamic linker. */
- srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
- BFD_ASSERT (srelgot != NULL);
-
- outrel.r_offset = (sgot->output_section->vma
- + sgot->output_offset
- + off);
- outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
- outrel.r_addend = relocation;
- loc = srelgot->contents;
- loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
- bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
- relocation = 0;
- }
+ /* We're clearing the bits for R_PPC_ADDR16_HA
+ and R_PPC_ADDR16_LO here. */
+ t0 &= ~0xffff;
+ t1 &= ~0xffff;
- bfd_put_32 (output_bfd, relocation, sgot->contents + off);
- local_got_offsets[r_symndx] |= 1;
- }
+ /* t0 is HA, t1 is LO */
+ relocation += addend;
+ t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
+ t1 |= relocation & 0xffff;
- relocation = sgot->output_offset + off - 4;
- }
- if (r_type == R_PPC_GOT16_HA)
- addend += ((relocation + addend) & 0x8000) << 1;
- break;
+ bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
+ bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
+ }
+ continue;
- /* Indirect .sdata relocation */
- case (int) R_PPC_EMB_SDAI16:
- BFD_ASSERT (sdata != NULL);
- relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info,
- sdata, h, relocation, rel,
- R_PPC_RELATIVE);
+ /* Indirect .sdata relocation. */
+ case R_PPC_EMB_SDAI16:
+ BFD_ASSERT (htab->sdata[0].section != NULL);
+ relocation
+ = elf_finish_pointer_linker_section (output_bfd, input_bfd, info,
+ &htab->sdata[0], h,
+ relocation, rel);
break;
- /* Indirect .sdata2 relocation */
- case (int) R_PPC_EMB_SDA2I16:
- BFD_ASSERT (sdata2 != NULL);
- relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info,
- sdata2, h, relocation, rel,
- R_PPC_RELATIVE);
+ /* Indirect .sdata2 relocation. */
+ case R_PPC_EMB_SDA2I16:
+ BFD_ASSERT (htab->sdata[1].section != NULL);
+ relocation
+ = elf_finish_pointer_linker_section (output_bfd, input_bfd, info,
+ &htab->sdata[1], h,
+ relocation, rel);
break;
- /* Handle the TOC16 reloc. We want to use the offset within the .got
- section, not the actual VMA. This is appropriate when generating
- an embedded ELF object, for which the .got section acts like the
- AIX .toc section. */
- case (int) R_PPC_TOC16: /* phony GOT16 relocations */
- BFD_ASSERT (sec != (asection *) 0);
+ /* Handle the TOC16 reloc. We want to use the offset within the .got
+ section, not the actual VMA. This is appropriate when generating
+ an embedded ELF object, for which the .got section acts like the
+ AIX .toc section. */
+ case R_PPC_TOC16: /* phony GOT16 relocations */
+ BFD_ASSERT (sec != NULL);
BFD_ASSERT (bfd_is_und_section (sec)
|| strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
- || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0)
+ || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
- addend -= sec->output_section->vma + sec->output_offset + 0x8000;
+ addend -= sec->output_section->vma + sec->output_offset + 0x8000;
break;
- case (int) R_PPC_PLTREL24:
+ case R_PPC_PLTREL24:
/* Relocation is to the entry for this symbol in the
- procedure linkage table. */
+ procedure linkage table. */
BFD_ASSERT (h != NULL);
if (h->plt.offset == (bfd_vma) -1
- || splt == NULL)
+ || htab->plt == NULL)
{
/* We didn't make a PLT entry for this symbol. This
- happens when statically linking PIC code, or when
- using -Bsymbolic. */
+ happens when statically linking PIC code, or when
+ using -Bsymbolic. */
break;
}
- relocation = (splt->output_section->vma
- + splt->output_offset
+ unresolved_reloc = FALSE;
+ relocation = (htab->plt->output_section->vma
+ + htab->plt->output_offset
+ h->plt.offset);
break;
- /* relocate against _SDA_BASE_ */
- case (int) R_PPC_SDAREL16:
+ /* Relocate against _SDA_BASE_. */
+ case R_PPC_SDAREL16:
{
const char *name;
- BFD_ASSERT (sec != (asection *) 0);
+ BFD_ASSERT (sec != NULL);
name = bfd_get_section_name (abfd, sec->output_section);
if (! ((strncmp (name, ".sdata", 6) == 0
&& (name[6] == 0 || name[6] == '.'))
|| (strncmp (name, ".sbss", 5) == 0
&& (name[5] == 0 || name[5] == '.'))))
{
- (*_bfd_error_handler) (_("%s: The target (%s) of a %s relocation is in the wrong output section (%s)"),
- bfd_archive_filename (input_bfd),
- sym_name,
- ppc_elf_howto_table[(int) r_type]->name,
- name);
+ (*_bfd_error_handler)
+ (_("%B: the target (%s) of a %s relocation is "
+ "in the wrong output section (%s)"),
+ input_bfd,
+ sym_name,
+ howto->name,
+ name);
}
- addend -= (sdata->sym_hash->root.u.def.value
- + sdata->sym_hash->root.u.def.section->output_section->vma
- + sdata->sym_hash->root.u.def.section->output_offset);
+ addend -= htab->sdata[0].sym_val;
}
break;
- /* relocate against _SDA2_BASE_ */
- case (int) R_PPC_EMB_SDA2REL:
+ /* Relocate against _SDA2_BASE_. */
+ case R_PPC_EMB_SDA2REL:
{
const char *name;
- BFD_ASSERT (sec != (asection *) 0);
+ BFD_ASSERT (sec != NULL);
name = bfd_get_section_name (abfd, sec->output_section);
if (! (strncmp (name, ".sdata2", 7) == 0
|| strncmp (name, ".sbss2", 6) == 0))
{
- (*_bfd_error_handler) (_("%s: The target (%s) of a %s relocation is in the wrong output section (%s)"),
- bfd_archive_filename (input_bfd),
- sym_name,
- ppc_elf_howto_table[(int) r_type]->name,
- name);
+ (*_bfd_error_handler)
+ (_("%B: the target (%s) of a %s relocation is "
+ "in the wrong output section (%s)"),
+ input_bfd,
+ sym_name,
+ howto->name,
+ name);
bfd_set_error (bfd_error_bad_value);
ret = FALSE;
continue;
}
- addend -= (sdata2->sym_hash->root.u.def.value
- + sdata2->sym_hash->root.u.def.section->output_section->vma
- + sdata2->sym_hash->root.u.def.section->output_offset);
+ addend -= htab->sdata[1].sym_val;
}
break;
- /* relocate against either _SDA_BASE_, _SDA2_BASE_, or 0 */
- case (int) R_PPC_EMB_SDA21:
- case (int) R_PPC_EMB_RELSDA:
+ /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
+ case R_PPC_EMB_SDA21:
+ case R_PPC_EMB_RELSDA:
{
const char *name;
int reg;
- BFD_ASSERT (sec != (asection *) 0);
+ BFD_ASSERT (sec != NULL);
name = bfd_get_section_name (abfd, sec->output_section);
if (((strncmp (name, ".sdata", 6) == 0
&& (name[6] == 0 || name[6] == '.'))
&& (name[5] == 0 || name[5] == '.'))))
{
reg = 13;
- addend -= (sdata->sym_hash->root.u.def.value
- + sdata->sym_hash->root.u.def.section->output_section->vma
- + sdata->sym_hash->root.u.def.section->output_offset);
+ addend -= htab->sdata[0].sym_val;
}
else if (strncmp (name, ".sdata2", 7) == 0
|| strncmp (name, ".sbss2", 6) == 0)
{
reg = 2;
- addend -= (sdata2->sym_hash->root.u.def.value
- + sdata2->sym_hash->root.u.def.section->output_section->vma
- + sdata2->sym_hash->root.u.def.section->output_offset);
+ addend -= htab->sdata[1].sym_val;
}
else if (strcmp (name, ".PPC.EMB.sdata0") == 0
else
{
- (*_bfd_error_handler) (_("%s: The target (%s) of a %s relocation is in the wrong output section (%s)"),
- bfd_archive_filename (input_bfd),
- sym_name,
- ppc_elf_howto_table[(int) r_type]->name,
- name);
+ (*_bfd_error_handler)
+ (_("%B: the target (%s) of a %s relocation is "
+ "in the wrong output section (%s)"),
+ input_bfd,
+ sym_name,
+ howto->name,
+ name);
bfd_set_error (bfd_error_bad_value);
ret = FALSE;
if (r_type == R_PPC_EMB_SDA21)
{ /* fill in register field */
- insn = bfd_get_32 (output_bfd, contents + offset);
+ insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
- bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset);
+ bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
}
}
break;
- /* Relocate against the beginning of the section */
- case (int) R_PPC_SECTOFF:
- case (int) R_PPC_SECTOFF_LO:
- case (int) R_PPC_SECTOFF_HI:
- BFD_ASSERT (sec != (asection *) 0);
- addend -= sec->output_section->vma;
- break;
-
- case (int) R_PPC_SECTOFF_HA:
- BFD_ASSERT (sec != (asection *) 0);
+ /* Relocate against the beginning of the section. */
+ case R_PPC_SECTOFF:
+ case R_PPC_SECTOFF_LO:
+ case R_PPC_SECTOFF_HI:
+ case R_PPC_SECTOFF_HA:
+ BFD_ASSERT (sec != NULL);
addend -= sec->output_section->vma;
- addend += ((relocation + addend) & 0x8000) << 1;
break;
- /* Negative relocations */
- case (int) R_PPC_EMB_NADDR32:
- case (int) R_PPC_EMB_NADDR16:
- case (int) R_PPC_EMB_NADDR16_LO:
- case (int) R_PPC_EMB_NADDR16_HI:
+ /* Negative relocations. */
+ case R_PPC_EMB_NADDR32:
+ case R_PPC_EMB_NADDR16:
+ case R_PPC_EMB_NADDR16_LO:
+ case R_PPC_EMB_NADDR16_HI:
+ case R_PPC_EMB_NADDR16_HA:
addend -= 2 * relocation;
break;
- case (int) R_PPC_EMB_NADDR16_HA:
- addend -= 2 * relocation;
- addend += ((relocation + addend) & 0x8000) << 1;
- break;
-
- /* NOP relocation that prevents garbage collecting linkers from omitting a
- reference. */
- case (int) R_PPC_EMB_MRKREF:
- continue;
-
- case (int) R_PPC_COPY:
- case (int) R_PPC_GLOB_DAT:
- case (int) R_PPC_JMP_SLOT:
- case (int) R_PPC_RELATIVE:
- case (int) R_PPC_PLT32:
- case (int) R_PPC_PLTREL32:
- case (int) R_PPC_PLT16_LO:
- case (int) R_PPC_PLT16_HI:
- case (int) R_PPC_PLT16_HA:
- case (int) R_PPC_EMB_RELSEC16:
- case (int) R_PPC_EMB_RELST_LO:
- case (int) R_PPC_EMB_RELST_HI:
- case (int) R_PPC_EMB_RELST_HA:
- case (int) R_PPC_EMB_BIT_FLD:
- (*_bfd_error_handler) (_("%s: Relocation %s is not yet supported for symbol %s."),
- bfd_archive_filename (input_bfd),
- ppc_elf_howto_table[(int) r_type]->name,
- sym_name);
+ case R_PPC_COPY:
+ case R_PPC_GLOB_DAT:
+ case R_PPC_JMP_SLOT:
+ case R_PPC_RELATIVE:
+ case R_PPC_PLT32:
+ case R_PPC_PLTREL32:
+ case R_PPC_PLT16_LO:
+ case R_PPC_PLT16_HI:
+ case R_PPC_PLT16_HA:
+ case R_PPC_ADDR30:
+ case R_PPC_EMB_RELSEC16:
+ case R_PPC_EMB_RELST_LO:
+ case R_PPC_EMB_RELST_HI:
+ case R_PPC_EMB_RELST_HA:
+ case R_PPC_EMB_BIT_FLD:
+ (*_bfd_error_handler)
+ (_("%B: relocation %s is not yet supported for symbol %s."),
+ input_bfd,
+ howto->name,
+ sym_name);
bfd_set_error (bfd_error_invalid_operation);
ret = FALSE;
continue;
+ }
- case (int) R_PPC_GNU_VTINHERIT:
- case (int) R_PPC_GNU_VTENTRY:
- /* These are no-ops in the end. */
- continue;
+ /* Do any further special processing. */
+ switch (r_type)
+ {
+ default:
+ break;
+
+ case R_PPC_ADDR16_HA:
+ case R_PPC_GOT16_HA:
+ case R_PPC_PLT16_HA:
+ case R_PPC_SECTOFF_HA:
+ case R_PPC_TPREL16_HA:
+ case R_PPC_DTPREL16_HA:
+ case R_PPC_GOT_TLSGD16_HA:
+ case R_PPC_GOT_TLSLD16_HA:
+ case R_PPC_GOT_TPREL16_HA:
+ case R_PPC_GOT_DTPREL16_HA:
+ case R_PPC_EMB_NADDR16_HA:
+ case R_PPC_EMB_RELST_HA:
+ /* It's just possible that this symbol is a weak symbol
+ that's not actually defined anywhere. In that case,
+ 'sec' would be NULL, and we should leave the symbol
+ alone (it will be set to zero elsewhere in the link). */
+ if (sec != NULL)
+ /* Add 0x10000 if sign bit in 0:15 is set.
+ Bits 0:15 are not used. */
+ addend += 0x8000;
+ break;
}
#ifdef DEBUG
- fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, offset = %ld, addend = %ld\n",
+ fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
+ "offset = %ld, addend = %ld\n",
howto->name,
(int) r_type,
sym_name,
r_symndx,
- (long) offset,
+ (long) rel->r_offset,
(long) addend);
#endif
+ if (unresolved_reloc
+ && !((input_section->flags & SEC_DEBUGGING) != 0
+ && h->def_dynamic))
+ {
+ (*_bfd_error_handler)
+ (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
+ input_bfd,
+ input_section,
+ (long) rel->r_offset,
+ howto->name,
+ sym_name);
+ ret = FALSE;
+ }
+
r = _bfd_final_link_relocate (howto,
input_bfd,
input_section,
contents,
- offset,
+ rel->r_offset,
relocation,
addend);
- if (r == bfd_reloc_ok)
- ;
- else if (r == bfd_reloc_overflow)
+ if (r != bfd_reloc_ok)
{
- const char *name;
-
- if (h != NULL)
- {
- if (h->root.type == bfd_link_hash_undefweak
- && howto->pc_relative)
- {
- /* Assume this is a call protected by other code that
- detect the symbol is undefined. If this is the case,
- we can safely ignore the overflow. If not, the
- program is hosed anyway, and a little warning isn't
- going to help. */
-
- continue;
- }
-
- name = h->root.root.string;
- }
- else
+ if (sym_name == NULL)
+ sym_name = "(null)";
+ if (r == bfd_reloc_overflow)
{
- name = bfd_elf_string_from_elf_section (input_bfd,
- symtab_hdr->sh_link,
- sym->st_name);
- if (name == NULL)
- continue;
- if (*name == '\0')
- name = bfd_section_name (input_bfd, sec);
- }
-
- if (! (*info->callbacks->reloc_overflow) (info,
- name,
- howto->name,
- (bfd_vma) 0,
- input_bfd,
- input_section,
- offset))
- return FALSE;
- }
- else
- ret = FALSE;
- }
-
-#ifdef DEBUG
- fprintf (stderr, "\n");
-#endif
-
- return ret;
-}
-
-static enum elf_reloc_type_class
-ppc_elf_reloc_type_class (rela)
- const Elf_Internal_Rela *rela;
-{
- switch ((int) ELF32_R_TYPE (rela->r_info))
- {
- case R_PPC_RELATIVE:
- return reloc_class_relative;
- case R_PPC_REL24:
- case R_PPC_ADDR24:
- case R_PPC_JMP_SLOT:
- return reloc_class_plt;
- case R_PPC_COPY:
- return reloc_class_copy;
- default:
- return reloc_class_normal;
- }
-}
-\f
-/* Support for core dump NOTE sections */
-static bfd_boolean
-ppc_elf_grok_prstatus (abfd, note)
- bfd *abfd;
- Elf_Internal_Note *note;
-{
- int offset;
- unsigned int raw_size;
-
- switch (note->descsz)
- {
- default:
- return FALSE;
-
- case 268: /* Linux/PPC */
- /* pr_cursig */
- elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
-
- /* pr_pid */
- elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
-
- /* pr_reg */
- offset = 72;
- raw_size = 192;
-
- break;
- }
-
- /* Make a ".reg/999" section. */
- return _bfd_elfcore_make_pseudosection (abfd, ".reg",
- raw_size, note->descpos + offset);
-}
-
-static bfd_boolean
-ppc_elf_grok_psinfo (abfd, note)
- bfd *abfd;
- Elf_Internal_Note *note;
-{
- switch (note->descsz)
- {
- default:
- return FALSE;
-
- case 128: /* Linux/PPC elf_prpsinfo */
- elf_tdata (abfd)->core_program
- = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
- elf_tdata (abfd)->core_command
- = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
- }
-
- /* Note that for some reason, a spurious space is tacked
- onto the end of the args in some (at least one anyway)
- implementations, so strip it off if it exists. */
-
- {
- char *command = elf_tdata (abfd)->core_command;
- int n = strlen (command);
-
- if (0 < n && command[n - 1] == ' ')
- command[n - 1] = '\0';
- }
-
- return TRUE;
-}
-\f
-/* Very simple linked list structure for recording apuinfo values. */
-typedef struct apuinfo_list
-{
- struct apuinfo_list * next;
- unsigned long value;
-}
-apuinfo_list;
-
-static apuinfo_list * head;
-
-static void apuinfo_list_init PARAMS ((void));
-static void apuinfo_list_add PARAMS ((unsigned long));
-static unsigned apuinfo_list_length PARAMS ((void));
-static unsigned long apuinfo_list_element PARAMS ((unsigned long));
-static void apuinfo_list_finish PARAMS ((void));
-
-extern void ppc_elf_begin_write_processing
- PARAMS ((bfd *, struct bfd_link_info *));
-extern void ppc_elf_final_write_processing
- PARAMS ((bfd *, bfd_boolean));
-extern bfd_boolean ppc_elf_write_section
- PARAMS ((bfd *, asection *, bfd_byte *));
-
-
-
-static void
-apuinfo_list_init PARAMS ((void))
-{
- head = NULL;
-}
-
-static void
-apuinfo_list_add (value)
- unsigned long value;
-{
- apuinfo_list * entry = head;
-
- while (entry != NULL)
- {
- if (entry->value == value)
- return;
- entry = entry->next;
- }
-
- entry = bfd_malloc (sizeof (* entry));
- if (entry == NULL)
- return;
-
- entry->value = value;
- entry->next = head;
- head = entry;
-}
-
-static unsigned
-apuinfo_list_length PARAMS ((void))
-{
- apuinfo_list * entry;
- unsigned long count;
-
- for (entry = head, count = 0;
- entry;
- entry = entry->next)
- ++ count;
-
- return count;
-}
-
-static inline unsigned long
-apuinfo_list_element (number)
- unsigned long number;
-{
- apuinfo_list * entry;
-
- for (entry = head;
- entry && number --;
- entry = entry->next)
- ;
-
- return entry ? entry->value : 0;
-}
+ if (warned)
+ continue;
+ if (h != NULL
+ && h->root.type == bfd_link_hash_undefweak
+ && howto->pc_relative)
+ {
+ /* Assume this is a call protected by other code that
+ detect the symbol is undefined. If this is the case,
+ we can safely ignore the overflow. If not, the
+ program is hosed anyway, and a little warning isn't
+ going to help. */
-static void
-apuinfo_list_finish PARAMS ((void))
-{
- apuinfo_list * entry;
+ continue;
+ }
- for (entry = head; entry;)
- {
- apuinfo_list * next = entry->next;
- free (entry);
- entry = next;
+ if (! (*info->callbacks->reloc_overflow) (info,
+ (h ? &h->root : NULL),
+ sym_name,
+ howto->name,
+ rel->r_addend,
+ input_bfd,
+ input_section,
+ rel->r_offset))
+ return FALSE;
+ }
+ else
+ {
+ (*_bfd_error_handler)
+ (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
+ input_bfd, input_section,
+ (long) rel->r_offset, howto->name, sym_name, (int) r);
+ ret = FALSE;
+ }
+ }
}
- head = NULL;
-}
-
-#define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
-#define APUINFO_LABEL "APUinfo"
+#ifdef DEBUG
+ fprintf (stderr, "\n");
+#endif
-/* Scan the input BFDs and create a linked list of
- the APUinfo values that will need to be emitted. */
+ return ret;
+}
+\f
+/* Finish up dynamic symbol handling. We set the contents of various
+ dynamic sections here. */
-void
-ppc_elf_begin_write_processing (abfd, link_info)
- bfd *abfd;
- struct bfd_link_info *link_info;
+static bfd_boolean
+ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
+ struct bfd_link_info *info,
+ struct elf_link_hash_entry *h,
+ Elf_Internal_Sym *sym)
{
- bfd * ibfd;
- asection * asec;
- char * buffer;
- unsigned num_input_sections;
- bfd_size_type output_section_size;
- unsigned i;
- unsigned num_entries;
- unsigned long offset;
- unsigned long length;
- const char * error_message = NULL;
+ struct ppc_elf_link_hash_table *htab;
- if (link_info == NULL)
- return;
+#ifdef DEBUG
+ fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
+ h->root.root.string);
+#endif
- /* Scan the input bfds, looking for apuinfo sections. */
- num_input_sections = 0;
- output_section_size = 0;
+ htab = ppc_elf_hash_table (info);
+ BFD_ASSERT (htab->elf.dynobj != NULL);
- for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
+ if (h->plt.offset != (bfd_vma) -1)
{
- asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
- if (asec)
- {
- ++ num_input_sections;
- output_section_size += asec->_raw_size;
- }
- }
-
- /* We need at least one input sections
- in order to make merging worthwhile. */
- if (num_input_sections < 1)
- return;
-
- /* Just make sure that the output section exists as well. */
- asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
- if (asec == NULL)
- return;
+ Elf_Internal_Rela rela;
+ bfd_byte *loc;
+ bfd_vma reloc_index;
- /* Allocate a buffer for the contents of the input sections. */
- buffer = bfd_malloc (output_section_size);
- if (buffer == NULL)
- return;
+#ifdef DEBUG
+ fprintf (stderr, ", plt_offset = %d", h->plt.offset);
+#endif
- offset = 0;
- apuinfo_list_init ();
+ /* This symbol has an entry in the procedure linkage table. Set
+ it up. */
- /* Read in the input sections contents. */
- for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
- {
- unsigned long datum;
- char * ptr;
+ BFD_ASSERT (h->dynindx != -1);
+ BFD_ASSERT (htab->plt != NULL && htab->relplt != NULL);
+ /* We don't need to fill in the .plt. The ppc dynamic linker
+ will fill it in. */
- asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
- if (asec == NULL)
- continue;
+ /* Fill in the entry in the .rela.plt section. */
+ rela.r_offset = (htab->plt->output_section->vma
+ + htab->plt->output_offset
+ + h->plt.offset);
+ rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
+ rela.r_addend = 0;
- length = asec->_raw_size;
- if (length < 24)
- {
- error_message = _("corrupt or empty %s section in %s");
- goto fail;
- }
+ reloc_index = (h->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_SLOT_SIZE;
+ if (reloc_index > PLT_NUM_SINGLE_ENTRIES)
+ reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
+ loc = (htab->relplt->contents
+ + reloc_index * sizeof (Elf32_External_Rela));
+ bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
- if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
- || (bfd_bread (buffer + offset, length, ibfd) != length))
+ if (!h->def_regular)
{
- error_message = _("unable to read in %s section from %s");
- goto fail;
+ /* Mark the symbol as undefined, rather than as defined in
+ the .plt section. Leave the value alone. */
+ sym->st_shndx = SHN_UNDEF;
+ /* If the symbol is weak, we do need to clear the value.
+ Otherwise, the PLT entry would provide a definition for
+ the symbol even if the symbol wasn't defined anywhere,
+ and so the symbol would never be NULL. */
+ if (!h->ref_regular_nonweak)
+ sym->st_value = 0;
}
+ }
- /* Process the contents of the section. */
- ptr = buffer + offset;
- error_message = _("corrupt %s section in %s");
-
- /* Verify the contents of the header. Note - we have to
- extract the values this way in order to allow for a
- host whose endian-ness is different from the target. */
- datum = bfd_get_32 (ibfd, ptr);
- if (datum != sizeof APUINFO_LABEL)
- goto fail;
-
- datum = bfd_get_32 (ibfd, ptr + 8);
- if (datum != 0x2)
- goto fail;
+ if (h->needs_copy)
+ {
+ asection *s;
+ Elf_Internal_Rela rela;
+ bfd_byte *loc;
- if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
- goto fail;
+ /* This symbols needs a copy reloc. Set it up. */
- /* Get the number of apuinfo entries. */
- datum = bfd_get_32 (ibfd, ptr + 4);
- if ((datum * 4 + 20) != length)
- goto fail;
+#ifdef DEBUG
+ fprintf (stderr, ", copy");
+#endif
- /* Make sure that we do not run off the end of the section. */
- if (offset + length > output_section_size)
- goto fail;
+ BFD_ASSERT (h->dynindx != -1);
- /* Scan the apuinfo section, building a list of apuinfo numbers. */
- for (i = 0; i < datum; i++)
- apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + (i * 4)));
+ if (h->size <= elf_gp_size (htab->elf.dynobj))
+ s = htab->relsbss;
+ else
+ s = htab->relbss;
+ BFD_ASSERT (s != NULL);
- /* Update the offset. */
- offset += length;
+ rela.r_offset = (h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset);
+ rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
+ rela.r_addend = 0;
+ loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
+ bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
}
- error_message = NULL;
-
- /* Compute the size of the output section. */
- num_entries = apuinfo_list_length ();
- output_section_size = 20 + num_entries * 4;
-
- asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
-
- if (! bfd_set_section_size (abfd, asec, output_section_size))
- ibfd = abfd,
- error_message = _("warning: unable to set size of %s section in %s");
+#ifdef DEBUG
+ fprintf (stderr, "\n");
+#endif
- fail:
- free (buffer);
+ /* Mark some specially defined symbols as absolute. */
+ if (strcmp (h->root.root.string, "_DYNAMIC") == 0
+ || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
+ || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
+ sym->st_shndx = SHN_ABS;
- if (error_message)
- _bfd_error_handler (error_message, APUINFO_SECTION_NAME,
- bfd_archive_filename (ibfd));
+ return TRUE;
+}
+\f
+static enum elf_reloc_type_class
+ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
+{
+ switch (ELF32_R_TYPE (rela->r_info))
+ {
+ case R_PPC_RELATIVE:
+ return reloc_class_relative;
+ case R_PPC_REL24:
+ case R_PPC_ADDR24:
+ case R_PPC_JMP_SLOT:
+ return reloc_class_plt;
+ case R_PPC_COPY:
+ return reloc_class_copy;
+ default:
+ return reloc_class_normal;
+ }
}
+\f
+/* Finish up the dynamic sections. */
+static bfd_boolean
+ppc_elf_finish_dynamic_sections (bfd *output_bfd,
+ struct bfd_link_info *info)
+{
+ asection *sdyn;
+ struct ppc_elf_link_hash_table *htab;
-/* Prevent the output section from accumulating the input sections'
- contents. We have already stored this in our linked list structure. */
+#ifdef DEBUG
+ fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
+#endif
-bfd_boolean
-ppc_elf_write_section (abfd, asec, contents)
- bfd * abfd ATTRIBUTE_UNUSED;
- asection * asec;
- bfd_byte * contents ATTRIBUTE_UNUSED;
-{
- return apuinfo_list_length () && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
-}
+ htab = ppc_elf_hash_table (info);
+ sdyn = bfd_get_section_by_name (htab->elf.dynobj, ".dynamic");
+ if (htab->elf.dynamic_sections_created)
+ {
+ Elf32_External_Dyn *dyncon, *dynconend;
-/* Finally we can generate the output section. */
+ BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
-void
-ppc_elf_final_write_processing (abfd, linker)
- bfd * abfd;
- bfd_boolean linker ATTRIBUTE_UNUSED;
-{
- bfd_byte * buffer;
- asection * asec;
- unsigned i;
- unsigned num_entries;
- bfd_size_type length;
+ dyncon = (Elf32_External_Dyn *) sdyn->contents;
+ dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
+ for (; dyncon < dynconend; dyncon++)
+ {
+ Elf_Internal_Dyn dyn;
+ asection *s;
- asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
- if (asec == NULL)
- return;
+ bfd_elf32_swap_dyn_in (htab->elf.dynobj, dyncon, &dyn);
- if (apuinfo_list_length () == 0)
- return;
+ switch (dyn.d_tag)
+ {
+ case DT_PLTGOT:
+ s = htab->plt;
+ dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
+ break;
- length = asec->_raw_size;
- if (length < 20)
- return;
+ case DT_PLTRELSZ:
+ dyn.d_un.d_val = htab->relplt->size;
+ break;
- buffer = bfd_malloc (length);
- if (buffer == NULL)
- {
- _bfd_error_handler (_("failed to allocate space for new APUinfo section."));
- return;
- }
+ case DT_JMPREL:
+ s = htab->relplt;
+ dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
+ break;
- /* Create the apuinfo header. */
- num_entries = apuinfo_list_length ();
- bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
- bfd_put_32 (abfd, num_entries, buffer + 4);
- bfd_put_32 (abfd, 0x2, buffer + 8);
- strcpy (buffer + 12, APUINFO_LABEL);
+ default:
+ continue;
+ }
- length = 20;
- for (i = 0; i < num_entries; i++)
- {
- bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
- length += 4;
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ }
}
- if (length != asec->_raw_size)
- _bfd_error_handler (_("failed to compute new APUinfo section."));
+ /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
+ easily find the address of the _GLOBAL_OFFSET_TABLE_. */
+ if (htab->got)
+ {
+ unsigned char *contents = htab->got->contents;
+ bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, contents);
- if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
- _bfd_error_handler (_("failed to install new APUinfo section."));
+ if (sdyn == NULL)
+ bfd_put_32 (output_bfd, 0, contents + 4);
+ else
+ bfd_put_32 (output_bfd,
+ sdyn->output_section->vma + sdyn->output_offset,
+ contents + 4);
- free (buffer);
+ elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
+ }
- apuinfo_list_finish ();
+ return TRUE;
}
\f
#define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
#define TARGET_BIG_NAME "elf32-powerpc"
#define ELF_ARCH bfd_arch_powerpc
#define ELF_MACHINE_CODE EM_PPC
+#ifdef __QNXTARGET__
+#define ELF_MAXPAGESIZE 0x1000
+#else
#define ELF_MAXPAGESIZE 0x10000
+#endif
+#define ELF_MINPAGESIZE 0x1000
#define elf_info_to_howto ppc_elf_info_to_howto
#ifdef EM_CYGNUS_POWERPC
#define elf_backend_can_gc_sections 1
#define elf_backend_can_refcount 1
#define elf_backend_got_header_size 12
-#define elf_backend_plt_header_size PLT_INITIAL_ENTRY_SIZE
#define elf_backend_rela_normal 1
+#define bfd_elf32_mkobject ppc_elf_mkobject
#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
-#define bfd_elf32_bfd_relax_section ppc_elf_relax_section
+#define bfd_elf32_bfd_relax_section ppc_elf_relax_section
#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
-#define bfd_elf32_bfd_final_link _bfd_elf32_gc_common_final_link
-#define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
+#define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
#define elf_backend_object_p ppc_elf_object_p
#define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
#define elf_backend_fake_sections ppc_elf_fake_sections
#define elf_backend_additional_program_headers ppc_elf_additional_program_headers
-#define elf_backend_modify_segment_map ppc_elf_modify_segment_map
#define elf_backend_grok_prstatus ppc_elf_grok_prstatus
#define elf_backend_grok_psinfo ppc_elf_grok_psinfo
#define elf_backend_reloc_type_class ppc_elf_reloc_type_class
-#define elf_backend_begin_write_processing ppc_elf_begin_write_processing
-#define elf_backend_final_write_processing ppc_elf_final_write_processing
-#define elf_backend_write_section ppc_elf_write_section
+#define elf_backend_begin_write_processing ppc_elf_begin_write_processing
+#define elf_backend_final_write_processing ppc_elf_final_write_processing
+#define elf_backend_write_section ppc_elf_write_section
+#define elf_backend_special_sections ppc_elf_special_sections
+#define elf_backend_plt_sym_val ppc_elf_plt_sym_val
#include "elf32-target.h"
projects / deliverable / binutils-gdb.git / blobdiff