/* PowerPC-specific support for 32-bit ELF
- Copyright 1994, 1995, 1996, 1997 Free Software Foundation, Inc.
+ Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
+ Free Software Foundation, Inc.
Written by Ian Lance Taylor, Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
#include "elf-bfd.h"
#include "elf/ppc.h"
-#define USE_RELA /* we want RELA relocations, not REL */
-
-/* PowerPC relocations defined by the ABIs */
-enum ppc_reloc_type
-{
- R_PPC_NONE = 0,
- R_PPC_ADDR32 = 1,
- R_PPC_ADDR24 = 2,
- R_PPC_ADDR16 = 3,
- R_PPC_ADDR16_LO = 4,
- R_PPC_ADDR16_HI = 5,
- R_PPC_ADDR16_HA = 6,
- R_PPC_ADDR14 = 7,
- R_PPC_ADDR14_BRTAKEN = 8,
- R_PPC_ADDR14_BRNTAKEN = 9,
- R_PPC_REL24 = 10,
- R_PPC_REL14 = 11,
- R_PPC_REL14_BRTAKEN = 12,
- R_PPC_REL14_BRNTAKEN = 13,
- R_PPC_GOT16 = 14,
- R_PPC_GOT16_LO = 15,
- R_PPC_GOT16_HI = 16,
- R_PPC_GOT16_HA = 17,
- R_PPC_PLTREL24 = 18,
- R_PPC_COPY = 19,
- R_PPC_GLOB_DAT = 20,
- R_PPC_JMP_SLOT = 21,
- R_PPC_RELATIVE = 22,
- R_PPC_LOCAL24PC = 23,
- R_PPC_UADDR32 = 24,
- R_PPC_UADDR16 = 25,
- R_PPC_REL32 = 26,
- R_PPC_PLT32 = 27,
- R_PPC_PLTREL32 = 28,
- R_PPC_PLT16_LO = 29,
- R_PPC_PLT16_HI = 30,
- R_PPC_PLT16_HA = 31,
- R_PPC_SDAREL16 = 32,
- R_PPC_SECTOFF = 33,
- R_PPC_SECTOFF_LO = 34,
- R_PPC_SECTOFF_HI = 35,
- R_PPC_SECTOFF_HA = 36,
-
- /* The remaining relocs are from the Embedded ELF ABI, and are not
- in the SVR4 ELF ABI. */
- R_PPC_EMB_NADDR32 = 101,
- R_PPC_EMB_NADDR16 = 102,
- R_PPC_EMB_NADDR16_LO = 103,
- R_PPC_EMB_NADDR16_HI = 104,
- R_PPC_EMB_NADDR16_HA = 105,
- R_PPC_EMB_SDAI16 = 106,
- R_PPC_EMB_SDA2I16 = 107,
- R_PPC_EMB_SDA2REL = 108,
- R_PPC_EMB_SDA21 = 109,
- R_PPC_EMB_MRKREF = 110,
- R_PPC_EMB_RELSEC16 = 111,
- R_PPC_EMB_RELST_LO = 112,
- R_PPC_EMB_RELST_HI = 113,
- R_PPC_EMB_RELST_HA = 114,
- R_PPC_EMB_BIT_FLD = 115,
- R_PPC_EMB_RELSDA = 116,
-
- /* This is a phony reloc to handle any old fashioned TOC16 references
- that may still be in object files. */
- R_PPC_TOC16 = 255,
-
- R_PPC_max
-};
+/* 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, Elf32_Internal_Rela *dst));
-static void ppc_elf_howto_init PARAMS ((void));
+ 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 boolean ppc_elf_set_private_flags PARAMS ((bfd *, flagword));
-static boolean ppc_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *));
-static boolean ppc_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
+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));
-static int ppc_elf_additional_program_headers PARAMS ((bfd *));
-static boolean ppc_elf_modify_segment_map PARAMS ((bfd *));
+#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 */
-static boolean ppc_elf_section_from_shdr PARAMS ((bfd *,
- Elf32_Internal_Shdr *,
- char *));
-static boolean ppc_elf_fake_sections
- PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *));
+/* The name of the dynamic interpreter. This is put in the .interp
+ section. */
-static elf_linker_section_t *ppc_elf_create_linker_section
- PARAMS ((bfd *abfd,
- struct bfd_link_info *info,
- enum elf_linker_section_enum));
+#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
-static boolean ppc_elf_check_relocs PARAMS ((bfd *,
- struct bfd_link_info *,
- asection *,
- const Elf_Internal_Rela *));
+/* The size in bytes of an entry in the procedure linkage table. */
+#define PLT_ENTRY_SIZE 12
+/* The initial size of the plt reserved for the dynamic linker. */
+#define PLT_INITIAL_ENTRY_SIZE 72
+/* The size of the gap between entries in the PLT. */
+#define PLT_SLOT_SIZE 8
+/* 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. */
-static boolean ppc_elf_adjust_dynamic_symbol PARAMS ((struct bfd_link_info *,
- struct elf_link_hash_entry *));
+struct ppc_elf_dyn_relocs
+{
+ struct ppc_elf_dyn_relocs *next;
-static boolean ppc_elf_adjust_dynindx PARAMS ((struct elf_link_hash_entry *, PTR));
+ /* The input section of the reloc. */
+ asection *sec;
-static boolean ppc_elf_size_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *));
+ /* Total number of relocs copied for the input section. */
+ bfd_size_type count;
+};
-static 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 **));
+/* PPC ELF linker hash entry. */
-static boolean ppc_elf_add_symbol_hook PARAMS ((bfd *,
- struct bfd_link_info *,
- const Elf_Internal_Sym *,
- const char **,
- flagword *,
- asection **,
- bfd_vma *));
+struct ppc_elf_link_hash_entry
+{
+ struct elf_link_hash_entry root;
-static boolean ppc_elf_finish_dynamic_symbol PARAMS ((bfd *,
- struct bfd_link_info *,
- struct elf_link_hash_entry *,
- Elf_Internal_Sym *));
+ /* Track dynamic relocs copied for this symbol. */
+ struct ppc_elf_dyn_relocs *dyn_relocs;
+};
-static boolean ppc_elf_finish_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *));
+#define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
-#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 */
+/* PPC ELF linker hash table. */
-/* The name of the dynamic interpreter. This is put in the .interp
- section. */
+struct ppc_elf_link_hash_table
+{
+ struct elf_link_hash_table root;
-#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
+ /* Small local sym to section mapping cache. */
+ struct sym_sec_cache sym_sec;
+};
-/* The size in bytes of an entry in the procedure linkage table, and of the initial size
- of the plt reserved for the dynamic linker. */
+/* Get the PPC ELF linker hash table from a link_info structure. */
-#define PLT_ENTRY_SIZE 12
-#define PLT_INITIAL_ENTRY_SIZE 72
+#define ppc_elf_hash_table(p) \
+ ((struct ppc_elf_link_hash_table *) (p)->hash)
-\f
-static reloc_howto_type *ppc_elf_howto_table[ (int)R_PPC_max ];
+/* 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;
+}
-static reloc_howto_type ppc_elf_howto_raw[] =
+/* 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;
+ }
+
+ _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
+}
+\f
+static reloc_howto_type *ppc_elf_howto_table[(int) R_PPC_max];
+
+static reloc_howto_type ppc_elf_howto_raw[] = {
/* This reloc does nothing. */
HOWTO (R_PPC_NONE, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_NONE", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* A standard 32 bit relocation. */
HOWTO (R_PPC_ADDR32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_ADDR32", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* An absolute 26 bit branch; the lower two bits must be zero.
FIXME: we don't check that, we just clear them. */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
26, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_ADDR24", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0x3fffffc, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* A standard 16 bit relocation. */
HOWTO (R_PPC_ADDR16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_ADDR16", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* A 16 bit relocation without overflow. */
HOWTO (R_PPC_ADDR16_LO, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_ADDR16_LO", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* The high order 16 bits of an address. */
HOWTO (R_PPC_ADDR16_HI, /* type */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_ADDR16_HI", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* The high order 16 bits of an address, plus 1 if the contents of
- the low 16 bits, treated as a signed number, is negative. */
+ the low 16 bits, treated as a signed number, is negative. */
HOWTO (R_PPC_ADDR16_HA, /* type */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
ppc_elf_addr16_ha_reloc, /* special_function */
"R_PPC_ADDR16_HA", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* An absolute 16 bit branch; the lower two bits must be zero.
FIXME: we don't check that, we just clear them. */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_ADDR14", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xfffc, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* An absolute 16 bit branch, for which bit 10 should be set to
indicate that the branch is expected to be taken. The lower two
- bits must be zero. */
+ bits must be zero. */
HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_ADDR14_BRTAKEN",/* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xfffc, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* An absolute 16 bit branch, for which bit 10 should be set to
indicate that the branch is not expected to be taken. The lower
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_ADDR14_BRNTAKEN",/* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xfffc, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
- /* A relative 26 bit branch; the lower two bits must be zero. */
+ /* A relative 26 bit branch; the lower two bits must be zero. */
HOWTO (R_PPC_REL24, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
26, /* bitsize */
- true, /* pc_relative */
+ TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_REL24", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0x3fffffc, /* dst_mask */
- true), /* pcrel_offset */
+ TRUE), /* pcrel_offset */
- /* A relative 16 bit branch; the lower two bits must be zero. */
+ /* A relative 16 bit branch; the lower two bits must be zero. */
HOWTO (R_PPC_REL14, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- true, /* pc_relative */
+ TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_REL14", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xfffc, /* dst_mask */
- true), /* pcrel_offset */
+ TRUE), /* pcrel_offset */
- /* A relative 16 bit branch. Bit 10 should be set to indicate that
+ /* A relative 16 bit branch. Bit 10 should be set to indicate that
the branch is expected to be taken. The lower two bits must be
zero. */
HOWTO (R_PPC_REL14_BRTAKEN, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- true, /* pc_relative */
+ TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_REL14_BRTAKEN", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xfffc, /* dst_mask */
- true), /* pcrel_offset */
+ TRUE), /* pcrel_offset */
- /* A relative 16 bit branch. Bit 10 should be set to indicate that
+ /* A relative 16 bit branch. Bit 10 should be set to indicate that
the branch is not expected to be taken. The lower two bits must
be zero. */
HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- true, /* pc_relative */
+ TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_REL14_BRNTAKEN",/* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xfffc, /* dst_mask */
- true), /* pcrel_offset */
+ TRUE), /* pcrel_offset */
/* Like R_PPC_ADDR16, but referring to the GOT table entry for the
symbol. */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_GOT16", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
the symbol. */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ 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_GOT16_LO", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
the symbol. */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_GOT16_HI", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
the symbol. */
HOWTO (R_PPC_GOT16_HA, /* type */
- 0, /* rightshift */
+ 16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc_elf_addr16_ha_reloc, /* special_function */
"R_PPC_GOT16_HA", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like R_PPC_REL24, but referring to the procedure linkage table
- entry for the symbol. FIXME: Not supported. */
+ entry for the symbol. */
HOWTO (R_PPC_PLTREL24, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
26, /* bitsize */
- true, /* pc_relative */
+ TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_PLTREL24", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0x3fffffc, /* dst_mask */
- true), /* pcrel_offset */
+ TRUE), /* pcrel_offset */
/* This is used only by the dynamic linker. The symbol should exist
both in the object being run and in some shared library. The
dynamic linker copies the data addressed by the symbol from the
- shared library into the object. I have no idea what the purpose
- of this is. */
+ shared library into the object, because the object being
+ run has to have the data at some particular address. */
HOWTO (R_PPC_COPY, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_COPY", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like R_PPC_ADDR32, but used when setting global offset table
entries. */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_GLOB_DAT", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Marks a procedure linkage table entry for a symbol. */
HOWTO (R_PPC_JMP_SLOT, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_JMP_SLOT", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Used only by the dynamic linker. When the object is run, this
longword is set to the load address of the object, plus the
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_RELATIVE", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like R_PPC_REL24, but uses the value of the symbol within the
object rather than the final value. Normally used for
- _GLOBAL_OFFSET_TABLE_. FIXME: Not supported. */
+ _GLOBAL_OFFSET_TABLE_. */
HOWTO (R_PPC_LOCAL24PC, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
26, /* bitsize */
- true, /* pc_relative */
+ TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_LOCAL24PC", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0x3fffffc, /* dst_mask */
- true), /* pcrel_offset */
+ TRUE), /* pcrel_offset */
/* Like R_PPC_ADDR32, but may be unaligned. */
HOWTO (R_PPC_UADDR32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_UADDR32", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like R_PPC_ADDR16, but may be unaligned. */
HOWTO (R_PPC_UADDR16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_UADDR16", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* 32-bit PC relative */
HOWTO (R_PPC_REL32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
- true, /* pc_relative */
+ TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_REL32", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
- true), /* pcrel_offset */
+ TRUE), /* pcrel_offset */
/* 32-bit relocation to the symbol's procedure linkage table.
- FIXEME: not supported. */
+ FIXME: not supported. */
HOWTO (R_PPC_PLT32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_PLT32", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* 32-bit PC relative relocation to the symbol's procedure linkage table.
- FIXEME: not supported. */
+ FIXME: not supported. */
HOWTO (R_PPC_PLTREL32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
- true, /* pc_relative */
+ TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_PLTREL32", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
- true), /* pcrel_offset */
+ TRUE), /* pcrel_offset */
/* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
the symbol. */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ 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_PLT16_LO", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
the symbol. */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_PLT16_HI", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
- the symbol. FIXME: Not supported. */
+ the symbol. */
HOWTO (R_PPC_PLT16_HA, /* type */
- 0, /* rightshift */
+ 16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc_elf_addr16_ha_reloc, /* special_function */
"R_PPC_PLT16_HA", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
small data items. */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_SDAREL16", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
- /* 32-bit section relative relocation. */
+ /* 16-bit section relative relocation. */
HOWTO (R_PPC_SECTOFF, /* type */
0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- true, /* pc_relative */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_SECTOFF", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
- 0, /* dst_mask */
- true), /* pcrel_offset */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
- /* 16-bit lower half section relative relocation. */
+ /* 16-bit lower half section relative relocation. */
HOWTO (R_PPC_SECTOFF_LO, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ 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_SECTOFF_LO", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
- /* 16-bit upper half section relative relocation. */
+ /* 16-bit upper half section relative relocation. */
HOWTO (R_PPC_SECTOFF_HI, /* type */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_SECTOFF_HI", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
- /* 16-bit upper half adjusted section relative relocation. */
+ /* 16-bit upper half adjusted section relative relocation. */
HOWTO (R_PPC_SECTOFF_HA, /* type */
- 0, /* rightshift */
+ 16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc_elf_addr16_ha_reloc, /* special_function */
"R_PPC_SECTOFF_HA", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* The remaining relocs are from the Embedded ELF ABI, and are not
in the SVR4 ELF ABI. */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
- false, /* pc_relative */
+ 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 */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
+ 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 */
+ 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 */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ 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 */
+ 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 */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ 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 */
+ 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 */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ 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,
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc_elf_addr16_ha_reloc, /* special_function */
"R_PPC_EMB_NADDR16_HA", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ 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
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ 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 */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ 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
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ 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 */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
small data items. */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ 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 */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ 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
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ 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 */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Relocation not handled: R_PPC_EMB_MRKREF */
/* Relocation not handled: R_PPC_EMB_RELSEC16 */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- true, /* pc_relative */
+ 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 */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ 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 */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_TOC16", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
};
-
\f
/* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
for (i = 0; i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); i++)
{
type = ppc_elf_howto_raw[i].type;
- BFD_ASSERT (type < sizeof(ppc_elf_howto_table) / sizeof(ppc_elf_howto_table[0]));
+ BFD_ASSERT (type < sizeof (ppc_elf_howto_table) / sizeof (ppc_elf_howto_table[0]));
ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
}
}
+\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;
+{
+ 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);
+}
+
+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;
+{
+#define PAGESIZE 0x1000
+
+ 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;
+
+ /* We never have to do this more than once per input section. */
+ *again = FALSE;
+
+ /* If needed, initialize this section's cooked size. */
+ if (isec->_cooked_size == 0)
+ isec->_cooked_size = isec->_raw_size;
+
+ /* 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)
+ {
+ bfd_vma dot, end_page, end_section;
+ bfd_boolean section_modified;
+
+ /* 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;
+ 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;
+ }
+
+ comb_curr = 0;
+ comb_count = 0;
+ if (isec->reloc_count)
+ {
+ 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);
+ }
+
+ /* 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)
+ {
+ elf_section_data (isec)->this_hdr.contents = contents;
+ free_contents = NULL;
+ }
+ }
+
+ if (rela_comb != NULL)
+ {
+ free (rela_comb);
+ rela_comb = NULL;
+ }
+ if (free_relocs != NULL)
+ {
+ free (free_relocs);
+ free_relocs = NULL;
+ }
+
+ 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;
+ }
+
+ return TRUE;
+
+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;
+ bfd *abfd ATTRIBUTE_UNUSED;
bfd_reloc_code_real_type code;
{
- enum ppc_reloc_type ppc_reloc = R_PPC_NONE;
+ enum elf_ppc_reloc_type ppc_reloc = R_PPC_NONE;
- if (!ppc_elf_howto_table[ R_PPC_ADDR32 ]) /* Initialize howto table if needed */
+ if (!ppc_elf_howto_table[R_PPC_ADDR32])
+ /* Initialize howto table if needed. */
ppc_elf_howto_init ();
- switch ((int)code)
+ switch ((int) code)
{
default:
- return (reloc_howto_type *)NULL;
+ 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_HI16_PLTOFF: ppc_reloc = R_PPC_PLT16_HI; break;
case BFD_RELOC_HI16_S_PLTOFF: ppc_reloc = R_PPC_PLT16_HA; break;
case BFD_RELOC_GPREL16: ppc_reloc = R_PPC_SDAREL16; break;
- case BFD_RELOC_32_BASEREL: ppc_reloc = R_PPC_SECTOFF; break;
+ case BFD_RELOC_16_BASEREL: ppc_reloc = R_PPC_SECTOFF; break;
case BFD_RELOC_LO16_BASEREL: ppc_reloc = R_PPC_SECTOFF_LO; break;
case BFD_RELOC_HI16_BASEREL: ppc_reloc = R_PPC_SECTOFF_HI; break;
case BFD_RELOC_HI16_S_BASEREL: ppc_reloc = R_PPC_SECTOFF_HA; break;
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;
}
- return ppc_elf_howto_table[ (int)ppc_reloc ];
+ return ppc_elf_howto_table[(int) ppc_reloc];
};
/* Set the howto pointer for a PowerPC ELF reloc. */
static void
ppc_elf_info_to_howto (abfd, cache_ptr, dst)
- bfd *abfd;
+ bfd *abfd ATTRIBUTE_UNUSED;
arelent *cache_ptr;
- Elf32_Internal_Rela *dst;
+ Elf_Internal_Rela *dst;
{
- if (!ppc_elf_howto_table[ R_PPC_ADDR32 ]) /* Initialize howto table if needed */
+ if (!ppc_elf_howto_table[R_PPC_ADDR32])
+ /* Initialize howto table if needed. */
ppc_elf_howto_init ();
BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
static bfd_reloc_status_type
ppc_elf_addr16_ha_reloc (abfd, reloc_entry, symbol, data, input_section,
output_bfd, error_message)
- bfd *abfd;
+ bfd *abfd ATTRIBUTE_UNUSED;
arelent *reloc_entry;
asymbol *symbol;
- PTR data;
+ PTR data ATTRIBUTE_UNUSED;
asection *input_section;
bfd *output_bfd;
- char **error_message;
+ char **error_message ATTRIBUTE_UNUSED;
{
bfd_vma relocation;
return bfd_reloc_continue;
}
-/* Function to set whether a module needs the -mrelocatable bit set. */
+/* Fix bad default arch selected for a 32 bit input bfd when the
+ default is 64 bit. */
+
+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);
+
+ if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
+ {
+ /* Relies on arch after 64 bit default being 32 bit default. */
+ abfd->arch_info = abfd->arch_info->next;
+ BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
+ }
+ }
+ return TRUE;
+}
+
+/* Function to set whether a module needs the -mrelocatable bit set. */
-static boolean
+static bfd_boolean
ppc_elf_set_private_flags (abfd, flags)
bfd *abfd;
flagword flags;
|| elf_elfheader (abfd)->e_flags == flags);
elf_elfheader (abfd)->e_flags = flags;
- elf_flags_init (abfd) = true;
- return true;
-}
-
-/* Copy backend specific data from one object module to another */
-static boolean
-ppc_elf_copy_private_bfd_data (ibfd, obfd)
- bfd *ibfd;
- bfd *obfd;
-{
- if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
- || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
- return true;
-
- BFD_ASSERT (!elf_flags_init (obfd)
- || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags);
-
- elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
- elf_flags_init (obfd) = true;
- return true;
+ elf_flags_init (abfd) = TRUE;
+ return TRUE;
}
/* Merge backend specific data from an object file to the output
object file when linking */
-static boolean
+static bfd_boolean
ppc_elf_merge_private_bfd_data (ibfd, obfd)
bfd *ibfd;
bfd *obfd;
{
flagword old_flags;
flagword new_flags;
- boolean error;
+ bfd_boolean error;
/* Check if we have the same endianess */
- if (ibfd->xvec->byteorder != obfd->xvec->byteorder
- && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
- {
- (*_bfd_error_handler)
- ("%s: compiled for a %s endian system and target is %s endian",
- bfd_get_filename (ibfd),
- bfd_big_endian (ibfd) ? "big" : "little",
- bfd_big_endian (obfd) ? "big" : "little");
-
- bfd_set_error (bfd_error_wrong_format);
- return false;
- }
+ 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;
+ 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 */
{
- elf_flags_init (obfd) = true;
+ elf_flags_init (obfd) = TRUE;
elf_elfheader (obfd)->e_flags = new_flags;
}
{
/* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib to be linked
with either. */
- error = false;
+ error = FALSE;
if ((new_flags & EF_PPC_RELOCATABLE) != 0
&& (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
{
- error = true;
+ error = TRUE;
(*_bfd_error_handler)
- ("%s: compiled with -mrelocatable and linked with modules compiled normally",
- bfd_get_filename (ibfd));
+ (_("%s: compiled with -mrelocatable and linked with modules compiled normally"),
+ bfd_archive_filename (ibfd));
}
else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
&& (old_flags & EF_PPC_RELOCATABLE) != 0)
{
- error = true;
+ error = TRUE;
(*_bfd_error_handler)
- ("%s: compiled normally and linked with modules compiled with -mrelocatable",
- bfd_get_filename (ibfd));
+ (_("%s: compiled normally and linked with modules compiled with -mrelocatable"),
+ bfd_archive_filename (ibfd));
}
- /* If -mrelocatable-lib is linked with an object without -mrelocatable-lib, turn off
- the -mrelocatable-lib, since at least one module isn't relocatable. */
- else if ((old_flags & EF_PPC_RELOCATABLE_LIB) != 0
- && (new_flags & EF_PPC_RELOCATABLE_LIB) == 0)
+
+ /* The output is -mrelocatable-lib iff both the input files are. */
+ if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
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. */
+ 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 */
elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
/* Warn about any other mismatches */
if (new_flags != old_flags)
{
- error = true;
+ error = TRUE;
(*_bfd_error_handler)
- ("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)",
- bfd_get_filename (ibfd), (long)new_flags, (long)old_flags);
+ (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
+ bfd_archive_filename (ibfd), (long) new_flags, (long) old_flags);
}
if (error)
{
bfd_set_error (bfd_error_bad_value);
- return false;
+ return FALSE;
}
}
- return true;
+ 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. */
-static boolean
+static bfd_boolean
ppc_elf_section_from_shdr (abfd, hdr, name)
bfd *abfd;
- Elf32_Internal_Shdr *hdr;
- char *name;
+ Elf_Internal_Shdr *hdr;
+ const char *name;
{
asection *newsect;
flagword flags;
if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
- return false;
+ return FALSE;
newsect = hdr->bfd_section;
flags = bfd_get_section_flags (abfd, newsect);
flags |= SEC_SORT_ENTRIES;
bfd_set_section_flags (abfd, newsect, flags);
- return true;
+ return TRUE;
}
-
\f
/* Set up any other section flags and such that may be necessary. */
-static boolean
+static bfd_boolean
ppc_elf_fake_sections (abfd, shdr, asect)
- bfd *abfd;
- Elf32_Internal_Shdr *shdr;
+ bfd *abfd ATTRIBUTE_UNUSED;
+ Elf_Internal_Shdr *shdr;
asection *asect;
{
if ((asect->flags & SEC_EXCLUDE) != 0)
if ((asect->flags & SEC_SORT_ENTRIES) != 0)
shdr->sh_type = SHT_ORDERED;
- return true;
+ return TRUE;
}
-
\f
/* Create a special linker section */
static elf_linker_section_t *
defaults = zero_section;
defaults.which = which;
- defaults.hole_written_p = false;
+ 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 | SEC_LINKER_CREATED);
+ | SEC_IN_MEMORY);
switch (which)
{
default:
- (*_bfd_error_handler) ("%s: Unknown special linker type %d",
+ (*_bfd_error_handler) (_("%s: Unknown special linker type %d"),
bfd_get_filename (abfd),
- (int)which);
+ (int) which);
bfd_set_error (bfd_error_bad_value);
- return (elf_linker_section_t *)0;
-
- case LINKER_SECTION_GOT: /* .got section */
- defaults.name = ".got";
- defaults.rel_name = ".rela.got";
- defaults.sym_name = "_GLOBAL_OFFSET_TABLE_";
- defaults.max_hole_offset = 32764;
- defaults.hole_size = 16;
- defaults.sym_offset = 4;
- break;
-
- case LINKER_SECTION_PLT: /* .plt section */
- defaults.name = ".plt";
- defaults.rel_name = ".rela.plt";
- defaults.sym_name = (char *)0;
- defaults.max_hole_offset = 0;
- defaults.hole_size = 0;
- defaults.sym_offset = 0;
- defaults.flags &= ~SEC_LOAD;
- break;
+ return (elf_linker_section_t *) 0;
case LINKER_SECTION_SDATA: /* .sdata/.sbss section */
defaults.name = ".sdata";
return lsect;
}
-
\f
-/* If we have a non-zero sized .sbss2 or .PPC.EMB.sbss0 sections, we need to bump up
- the number of section headers. */
+/* If we have a non-zero sized .sbss2 or .PPC.EMB.sbss0 sections, we
+ need to bump up the number of section headers. */
static int
ppc_elf_additional_program_headers (abfd)
return ret;
}
-/* Modify the segment map if needed */
+/* Modify the segment map if needed. */
-static boolean
+static bfd_boolean
ppc_elf_modify_segment_map (abfd)
- bfd *abfd;
+ bfd *abfd ATTRIBUTE_UNUSED;
{
- return true;
+ return TRUE;
}
\f
+/* The powerpc .got has a blrl instruction in it. Mark it executable. */
+
+static asection *
+ppc_elf_create_got (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+ register asection *s;
+ flagword flags;
+
+ if (!_bfd_elf_create_got_section (abfd, info))
+ return NULL;
+
+ s = bfd_get_section_by_name (abfd, ".got");
+ if (s == NULL)
+ abort ();
+
+ flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED);
+ if (!bfd_set_section_flags (abfd, s, flags))
+ return NULL;
+ return s;
+}
+
+/* We have to create .dynsbss and .rela.sbss here so that they get mapped
+ to output sections (just like _bfd_elf_create_dynamic_sections has
+ to create .dynbss and .rela.bss). */
+
+static bfd_boolean
+ppc_elf_create_dynamic_sections (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+ register asection *s;
+ flagword flags;
+
+ if (!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);
+
+ s = bfd_make_section (abfd, ".dynsbss");
+ if (s == NULL
+ || ! bfd_set_section_flags (abfd, s, SEC_ALLOC))
+ return FALSE;
+
+ 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;
+ }
+
+ s = bfd_get_section_by_name (abfd, ".plt");
+ if (s == NULL)
+ abort ();
+
+ flags = SEC_ALLOC | SEC_CODE | SEC_IN_MEMORY | SEC_LINKER_CREATED;
+ return bfd_set_section_flags (abfd, s, flags);
+}
+
/* Adjust a symbol defined by a dynamic object and referenced by a
regular object. The current definition is in some section of the
dynamic object, but we're not including those sections. We have to
change the definition to something the rest of the link can
understand. */
-static boolean
+static bfd_boolean
ppc_elf_adjust_dynamic_symbol (info, h)
struct bfd_link_info *info;
struct elf_link_hash_entry *h;
&& (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. */
if (h->type == STT_FUNC
|| (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
{
- if (! info->shared
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
- && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0)
+ if (! elf_hash_table (info)->dynamic_sections_created
+ || SYMBOL_CALLS_LOCAL (info, h)
+ || (info->shared && h->plt.refcount <= 0))
{
- /* This case can occur if we saw a PLT32 reloc in an input
- file, but the symbol was never referred to by a dynamic
- object. In such a case, we don't actually need to build
- a procedure linkage table, and we can just do a PC32
- reloc instead. */
- BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0);
- return true;
+ /* 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.
+
+ 2. We know for certain that a call to this symbol
+ will go to this object.
+
+ 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. */
+ 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;
+ return FALSE;
}
+ BFD_ASSERT (h->dynindx != -1);
s = bfd_get_section_by_name (dynobj, ".plt");
BFD_ASSERT (s != NULL);
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
- + 8 * ((s->_raw_size - PLT_INITIAL_ENTRY_SIZE) / PLT_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
h->root.u.def.value = plt_offset;
}
- h->plt_offset = plt_offset;
+ h->plt.offset = plt_offset;
- /* Make room for this entry. */
- s->_raw_size += PLT_ENTRY_SIZE;
-
-#if 0
- /* We also need to make an entry in the .got.plt section, which
- will be placed in the .got section by the linker script. */
-
- s = bfd_get_section_by_name (dynobj, ".got.plt");
- BFD_ASSERT (s != NULL);
- s->_raw_size += 4;
-#endif
+ /* 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;
+ return TRUE;
}
+ else
+ h->plt.offset = (bfd_vma) -1;
/* If this is a weak symbol, and there is a real definition, the
processor independent code will have arranged for us to see the
|| 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;
- return true;
+ return TRUE;
}
/* This is a reference to a symbol defined by a dynamic object which
For such cases we need not do anything here; the relocations will
be handled correctly by relocate_section. */
if (info->shared)
- return true;
+ 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
offset table. The dynamic linker will use the .dynsym entry to
determine the address it must put in the global offset table, so
both the dynamic object and the regular object will refer to the
- same memory location for the variable. */
+ same memory location for the variable.
+
+ Of course, if the symbol is sufficiently small, we must instead
+ allocate it in .sbss. FIXME: It would be better to do this if and
+ only if there were actually SDAREL relocs for that symbol. */
- s = bfd_get_section_by_name (dynobj, ".dynbss");
+ if (h->size <= elf_gp_size (dynobj))
+ s = bfd_get_section_by_name (dynobj, ".dynsbss");
+ else
+ s = bfd_get_section_by_name (dynobj, ".dynbss");
BFD_ASSERT (s != NULL);
- /* If the symbol is currently defined in the .bss section of the
- dynamic object, then it is OK to simply initialize it to zero.
- If the symbol is in some other section, we must generate a
- R_PPC_COPY reloc to tell the dynamic linker to copy the initial
- value out of the dynamic object and into the runtime process
- image. We need to remember the offset into the .rela.bss section
- we are going to use. */
- if ((h->root.u.def.section->flags & SEC_LOAD) != 0)
+ /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
+ copy the initial value out of the dynamic object and into the
+ runtime process image. We need to remember the offset into the
+ .rela.bss section we are going to use. */
+ if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
{
asection *srel;
- srel = bfd_get_section_by_name (dynobj, ".rela.bss");
+ if (h->size <= elf_gp_size (dynobj))
+ srel = bfd_get_section_by_name (dynobj, ".rela.sbss");
+ else
+ srel = bfd_get_section_by_name (dynobj, ".rela.bss");
BFD_ASSERT (srel != NULL);
- srel->_raw_size += sizeof (Elf32_External_Rel);
+ srel->_raw_size += sizeof (Elf32_External_Rela);
h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
}
/* We need to figure out the alignment required for this symbol. I
have no idea how ELF linkers handle this. */
power_of_two = bfd_log2 (h->size);
- if (power_of_two > 3)
- power_of_two = 3;
+ if (power_of_two > 4)
+ power_of_two = 4;
/* Apply the required alignment. */
s->_raw_size = BFD_ALIGN (s->_raw_size,
if (power_of_two > bfd_get_section_alignment (dynobj, s))
{
if (! bfd_set_section_alignment (dynobj, s, power_of_two))
- return false;
+ return FALSE;
}
/* Define the symbol as being at this point in the section. */
/* Increment the section size to make room for the symbol. */
s->_raw_size += h->size;
- return true;
+ return TRUE;
}
-
\f
-/* Increment the index of a dynamic symbol by a given amount. Called
- via elf_link_hash_traverse. */
+/* Allocate space in associated reloc sections for dynamic relocs. */
-static boolean
-ppc_elf_adjust_dynindx (h, cparg)
+static bfd_boolean
+allocate_dynrelocs (h, info)
struct elf_link_hash_entry *h;
- PTR cparg;
+ PTR info ATTRIBUTE_UNUSED;
{
- int *cp = (int *) cparg;
+ struct ppc_elf_dyn_relocs *p;
-#ifdef DEBUG
- fprintf (stderr, "ppc_elf_adjust_dynindx called, h->dynindx = %d, *cp = %d\n", h->dynindx, *cp);
-#endif
+ if (h->root.type == bfd_link_hash_indirect)
+ return TRUE;
+
+ 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;
- if (h->dynindx != -1)
- h->dynindx += *cp;
+ 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;
+ 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;
}
-\f
/* Set the sizes of the dynamic sections. */
-static boolean
+static bfd_boolean
ppc_elf_size_dynamic_sections (output_bfd, info)
- bfd *output_bfd;
+ bfd *output_bfd ATTRIBUTE_UNUSED;
struct bfd_link_info *info;
{
bfd *dynobj;
asection *s;
- boolean plt;
- boolean relocs;
- boolean reltext;
+ bfd_boolean plt;
+ bfd_boolean relocs;
+ bfd *ibfd;
#ifdef DEBUG
fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
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.sdata", (char *)0 };
+ static char *rela_sections[] = { ".rela.got", ".rela.sdata",
+ ".rela.sdata2", ".rela.sbss",
+ (char *) 0 };
char **p;
- for (p = rela_sections; *p != (char *)0; p++)
+ for (p = rela_sections; *p != (char *) 0; p++)
{
s = bfd_get_section_by_name (dynobj, *p);
if (s != 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;
- reltext = false;
- for (s = dynobj->sections; s != NULL; s = s->next)
+ /* 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;
- boolean strip;
+ bfd_boolean strip;
if ((s->flags & SEC_LINKER_CREATED) == 0)
continue;
of the dynobj section names depend upon the input files. */
name = bfd_get_section_name (dynobj, s);
- strip = false;
+ strip = FALSE;
if (strcmp (name, ".plt") == 0)
{
{
/* Strip this section if we don't need it; see the
comment below. */
- strip = true;
+ strip = TRUE;
}
else
{
/* Remember whether there is a PLT. */
- plt = true;
+ plt = TRUE;
}
}
else if (strncmp (name, ".rela", 5) == 0)
adjust_dynamic_symbol is called, and it is that
function which decides whether anything needs to go
into these sections. */
- strip = true;
+ strip = TRUE;
}
else
{
- asection *target;
-
- /* Remember whether there are any reloc sections other
- than .rel.plt. */
- if (strcmp (name, ".rela.plt") != 0)
- {
- const char *outname;
-
- relocs = true;
-
- /* If this relocation section applies to a read only
- section, then we probably need a DT_TEXTREL
- entry. The entries in the .rel.plt section
- really apply to the .got section, which we
- created ourselves and so know is not readonly. */
- outname = bfd_get_section_name (output_bfd,
- s->output_section);
- target = bfd_get_section_by_name (output_bfd, outname + 4);
- if (target != NULL
- && (target->flags & SEC_READONLY) != 0)
- reltext = true;
- }
+ /* 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. */
if (strip)
{
- asection **spp;
-
- for (spp = &s->output_section->owner->sections;
- *spp != s->output_section;
- spp = &(*spp)->next)
- ;
- *spp = s->output_section->next;
- --s->output_section->owner->section_count;
-
+ _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;
+ return FALSE;
}
if (elf_hash_table (info)->dynamic_sections_created)
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. */
- if (! info->shared)
+#define add_dynamic_entry(TAG, VAL) \
+ bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
+
+ if (!info->shared)
{
- if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0))
- return false;
+ if (!add_dynamic_entry (DT_DEBUG, 0))
+ return FALSE;
}
if (plt)
{
- if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0)
- || ! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0)
- || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_REL)
- || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0))
- return false;
+ 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 (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0)
- || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, DT_RELA)
- || ! bfd_elf32_add_dynamic_entry (info, DT_RELENT,
- sizeof (Elf32_External_Rela)))
- return false;
+ 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 (reltext)
- {
- if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0))
- 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 we are generating a shared library, we generate a section
- symbol for each output section. These are local symbols, which
- means that they must come first in the dynamic symbol table.
- That means we must increment the dynamic symbol index of every
- other dynamic symbol. */
- if (info->shared)
- {
- int c, i;
-
- c = bfd_count_sections (output_bfd);
- elf_link_hash_traverse (elf_hash_table (info),
- ppc_elf_adjust_dynindx,
- (PTR) &c);
- elf_hash_table (info)->dynsymcount += c;
-
- for (i = 1, s = output_bfd->sections; s != NULL; s = s->next, i++)
+ if ((info->flags & DF_TEXTREL) != 0)
{
- elf_section_data (s)->dynindx = i;
- /* These symbols will have no names, so we don't need to
- fiddle with dynstr_index. */
+ if (!add_dynamic_entry (DT_TEXTREL, 0))
+ return FALSE;
}
}
+#undef add_dynamic_entry
- return true;
+ 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 boolean
+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;
{
- boolean ret = true;
bfd *dynobj;
Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes;
+ struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
const Elf_Internal_Rela *rel;
const Elf_Internal_Rela *rel_end;
- bfd_vma *local_got_offsets;
- elf_linker_section_t *got;
+ 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;
+ return TRUE;
#ifdef DEBUG
fprintf (stderr, "ppc_elf_check_relocs called for section %s in %s\n",
bfd_get_section_name (abfd, sec),
- bfd_get_filename (abfd));
+ bfd_archive_filename (abfd));
#endif
- /* Create the linker generated sections all the time so that the special
- symbols are created. */
- if ((got = elf_linker_section (abfd, LINKER_SECTION_GOT)) == NULL)
- {
- got = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_GOT);
- if (!got)
- ret = false;
- }
-
-#if 0
- if ((plt = elf_linker_section (abfd, LINKER_SECTION_PLT)) == NULL)
- {
- plt = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_PLT);
- if (!plt)
- ret = false;
- }
-#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)
- ret = false;
+ 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)
- ret = false;
+ 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);
- local_got_offsets = elf_local_got_offsets (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;
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)
+ {
+ 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;
+ }
+ }
+
switch (ELF32_R_TYPE (rel->r_info))
{
/* GOT16 relocations */
case R_PPC_GOT16_LO:
case R_PPC_GOT16_HI:
case R_PPC_GOT16_HA:
- if (got->rel_section == NULL
- && (h != NULL || info->shared)
- && !_bfd_elf_make_linker_section_rela (dynobj, got, 2))
+ /* This symbol requires a global offset table entry. */
+
+ if (sgot == NULL)
{
- ret = false;
- break;
+ if (dynobj == NULL)
+ elf_hash_table (info)->dynobj = dynobj = abfd;
+ sgot = ppc_elf_create_got (dynobj, info);
+ if (sgot == NULL)
+ return FALSE;
}
- if (!bfd_elf32_create_pointer_linker_section (abfd, info, got, h, rel))
- ret = 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 (h != NULL)
+ {
+ 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++;
+ }
+ else
+ {
+ /* This is a global offset table entry for a local symbol. */
+ if (local_got_refcounts == NULL)
+ {
+ bfd_size_type size;
+
+ 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 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;
/* 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_get_filename (abfd),
- "R_PPC_EMB_SDAI16");
- ret = false;
- break;
+ ((*_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 (got->rel_section == NULL
- && (h != NULL || info->shared)
- && !_bfd_elf_make_linker_section_rela (dynobj, got, 2))
+ if (srelgot == NULL && (h != NULL || info->shared))
{
- ret = false;
- break;
+ 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 (!bfd_elf32_create_pointer_linker_section (abfd, info, sdata, h, rel))
- ret = false;
+ return FALSE;
break;
case R_PPC_EMB_SDA2I16:
if (info->shared)
{
- (*_bfd_error_handler) ("%s: relocation %s cannot be used when making a shared object",
- bfd_get_filename (abfd),
- "R_PPC_EMB_SDA2I16");
- ret = false;
- break;
+ ((*_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 (got->rel_section == NULL
- && (h != NULL || info->shared)
- && !_bfd_elf_make_linker_section_rela (dynobj, got, 2))
- 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 (!bfd_elf32_create_pointer_linker_section (abfd, info, sdata2, h, rel))
- return false;
+ return FALSE;
break;
case R_PPC_EMB_SDA21:
if (info->shared)
{
- (*_bfd_error_handler) ("%s: relocation %s cannot be used when making a shared object",
- bfd_get_filename (abfd),
- ppc_elf_howto_table[(int)ELF32_R_TYPE (rel->r_info)]->name);
- ret = false;
+ ((*_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;
/* It does not make sense to have a procedure linkage
table entry for a local symbol. */
bfd_set_error (bfd_error_bad_value);
- ret = false;
- break;
+ return FALSE;
}
/* Make sure this symbol is output as a dynamic symbol. */
if (h->dynindx == -1)
{
if (! bfd_elf32_link_record_dynamic_symbol (info, h))
- {
- ret = false;
- break;
- }
+ return FALSE;
}
-
h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
+ h->plt.refcount++;
break;
- /* the following relocations don't need to propigate the relocation if
- linking a shared object since they are section relative. */
+ /* 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_LOCAL24PC:
break;
+ /* 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;
+
+ /* 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;
+
/* 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:
- if (h != NULL
- && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
- break;
- /* fall through */
-
case R_PPC_REL14:
case R_PPC_REL14_BRTAKEN:
case R_PPC_REL14_BRNTAKEN:
- if (h == NULL)
+ case R_PPC_REL32:
+ if (h == NULL
+ || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
+ || SYMBOL_REFERENCES_LOCAL (info, h))
break;
/* fall through */
default:
- if (info->shared
- && (sec->flags & SEC_ALLOC) != 0)
+ if (info->shared)
{
+ struct ppc_elf_dyn_relocs *p;
+ struct ppc_elf_dyn_relocs **head;
+
#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>");
elf_elfheader (abfd)->e_shstrndx,
elf_section_data (sec)->rel_hdr.sh_name));
if (name == NULL)
- {
- ret = false;
- break;
- }
+ return FALSE;
BFD_ASSERT (strncmp (name, ".rela", 5) == 0
&& strcmp (bfd_get_section_name (abfd, sec),
sreloc = bfd_get_section_by_name (dynobj, name);
if (sreloc == NULL)
{
+ flagword flags;
+
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,
- (SEC_ALLOC
- | SEC_LOAD
- | SEC_HAS_CONTENTS
- | SEC_IN_MEMORY
- | SEC_LINKER_CREATED
- | SEC_READONLY))
+ || ! bfd_set_section_flags (dynobj, sreloc, flags)
|| ! bfd_set_section_alignment (dynobj, sreloc, 2))
- {
- ret = false;
- break;
- }
+ 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, &ppc_elf_hash_table (info)->sym_sec,
+ sec, r_symndx));
+ if (s == NULL)
+ return FALSE;
+
+ head = ((struct ppc_elf_dyn_relocs **)
+ &elf_section_data (s)->local_dynrel);
}
- sreloc->_raw_size += sizeof (Elf32_External_Rela);
+ p = *head;
+ if (p == NULL || p->sec != sec)
+ {
+ 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;
+ }
+
+ p->count++;
}
break;
}
}
- return ret;
+ return TRUE;
+}
+
+/* Return the section that should be marked against GC for a given
+ relocation. */
+
+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)
+ {
+ switch (ELF32_R_TYPE (rel->r_info))
+ {
+ case R_PPC_GNU_VTINHERIT:
+ case R_PPC_GNU_VTENTRY:
+ break;
+
+ default:
+ switch (h->root.type)
+ {
+ case bfd_link_hash_defined:
+ case bfd_link_hash_defweak:
+ return h->root.u.def.section;
+
+ case bfd_link_hash_common:
+ return h->root.u.c.p->section;
+
+ default:
+ break;
+ }
+ }
+ }
+ else
+ return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
+
+ return NULL;
}
+/* Update the got entry reference counts for the section being removed. */
+
+static bfd_boolean
+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;
+{
+ 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;
+
+ elf_section_data (sec)->local_dynrel = NULL;
+
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ sym_hashes = elf_sym_hashes (abfd);
+ local_got_refcounts = elf_local_got_refcounts (abfd);
+
+ 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 */
+
+ default:
+ r_symndx = ELF32_R_SYM (rel->r_info);
+ if (r_symndx >= symtab_hdr->sh_info)
+ {
+ struct ppc_elf_dyn_relocs **pp, *p;
+
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+
+ 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;
+ }
+
+ 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. */
-/*ARGSUSED*/
-static boolean
+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;
- flagword *flagsp;
+ 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 <= bfd_get_gp_size (abfd))
+ if (sym->st_shndx == SHN_COMMON
+ && !info->relocateable
+ && sym->st_size <= elf_gp_size (abfd)
+ && info->hash->creator->flavour == bfd_target_elf_flavour)
{
/* Common symbols less than or equal to -G nn bytes are automatically
put into .sdata. */
- elf_linker_section_t *sdata = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA);
+ elf_linker_section_t *sdata
+ = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA);
+
if (!sdata->bss_section)
{
+ 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. */
- sdata->bss_section = ((asection *)
- bfd_zalloc (abfd, sizeof (asection)));
+ amt = sizeof (asection);
+ sdata->bss_section = (asection *) bfd_zalloc (abfd, amt);
if (sdata->bss_section == NULL)
- return false;
+ return FALSE;
sdata->bss_section->name = sdata->bss_name;
sdata->bss_section->flags = SEC_IS_COMMON;
sdata->bss_section->output_section = sdata->bss_section;
- sdata->bss_section->symbol =
- (asymbol *) bfd_zalloc (abfd, sizeof (asymbol));
+ 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, sizeof (asymbol *));
+ (asymbol **) bfd_zalloc (abfd, amt);
if (sdata->bss_section->symbol == NULL
|| sdata->bss_section->symbol_ptr_ptr == NULL)
- return false;
+ 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;
*valp = sym->st_size;
}
- return true;
+ return TRUE;
}
-
\f
/* Finish up dynamic symbol handling. We set the contents of various
dynamic sections here. */
-static boolean
+static bfd_boolean
ppc_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
bfd *output_bfd;
struct bfd_link_info *info;
bfd *dynobj;
#ifdef DEBUG
- fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s", h->root.root.string);
+ fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
+ h->root.root.string);
#endif
dynobj = elf_hash_table (info)->dynobj;
BFD_ASSERT (dynobj != NULL);
- if (h->plt_offset != (bfd_vma) -1)
+ if (h->plt.offset != (bfd_vma) -1)
{
asection *splt;
asection *srela;
Elf_Internal_Rela rela;
+ bfd_byte *loc;
+ bfd_vma reloc_index;
#ifdef DEBUG
- fprintf (stderr, ", plt_offset = %d", h->plt_offset);
+ fprintf (stderr, ", plt_offset = %d", h->plt.offset);
#endif
/* This symbol has an entry in the procedure linkage table. Set
srela = bfd_get_section_by_name (dynobj, ".rela.plt");
BFD_ASSERT (splt != NULL && srela != NULL);
- /* We don't need to fill in the .plt. The solaris dynamic linker will
- fill it in. */
+ /* We don't need to fill in the .plt. The ppc dynamic linker
+ will fill it in. */
/* Fill in the entry in the .rela.plt section. */
rela.r_offset = (splt->output_section->vma
+ splt->output_offset
- + h->plt_offset);
+ + h->plt.offset);
rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
rela.r_addend = 0;
- bfd_elf32_swap_reloca_out (output_bfd, &rela,
- ((Elf32_External_Rela *) srela->contents
- + ((h->plt_offset - PLT_INITIAL_ENTRY_SIZE) / 8)));
+
+ 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);
if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
{
/* 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;
}
}
+ if (h->got.offset != (bfd_vma) -1)
+ {
+ asection *sgot;
+ asection *srela;
+ Elf_Internal_Rela rela;
+ bfd_byte *loc;
+
+ /* This symbol has an entry in the global offset table. Set it
+ up. */
+
+ sgot = bfd_get_section_by_name (dynobj, ".got");
+ srela = bfd_get_section_by_name (dynobj, ".rela.got");
+ BFD_ASSERT (sgot != NULL && srela != NULL);
+
+ rela.r_offset = (sgot->output_section->vma
+ + sgot->output_offset
+ + (h->got.offset &~ (bfd_vma) 1));
+
+ /* 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))
+ {
+ 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);
+ }
+ else
+ {
+ BFD_ASSERT ((h->got.offset & 1) == 0);
+ rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_GLOB_DAT);
+ rela.r_addend = 0;
+ }
+
+ bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
+ loc = srela->contents;
+ loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
+ bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
+ }
+
if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
{
asection *s;
Elf_Internal_Rela rela;
+ bfd_byte *loc;
/* This symbols needs a copy reloc. Set it up. */
BFD_ASSERT (h->dynindx != -1);
- s = bfd_get_section_by_name (h->root.u.def.section->owner,
- ".rela.bss");
+ if (h->size <= elf_gp_size (dynobj))
+ s = bfd_get_section_by_name (h->root.u.def.section->owner,
+ ".rela.sbss");
+ 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_offset);
rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
rela.r_addend = 0;
- bfd_elf32_swap_reloca_out (output_bfd, &rela,
- ((Elf32_External_Rela *) s->contents
- + s->reloc_count));
- ++s->reloc_count;
+ loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
+ bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
}
#ifdef DEBUG
|| strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
sym->st_shndx = SHN_ABS;
- return true;
+ return TRUE;
}
-
\f
/* Finish up the dynamic sections. */
-static boolean
+static bfd_boolean
ppc_elf_finish_dynamic_sections (output_bfd, info)
bfd *output_bfd;
struct bfd_link_info *info;
{
asection *sdyn;
bfd *dynobj = elf_hash_table (info)->dynobj;
- elf_linker_section_t *got = elf_linker_section (dynobj, LINKER_SECTION_GOT);
+ asection *sgot = bfd_get_section_by_name (dynobj, ".got");
#ifdef DEBUG
fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
{
Elf_Internal_Dyn dyn;
const char *name;
- boolean size;
+ bfd_boolean size;
bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
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;
+ 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 (name != NULL)
/* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
easily find the address of the _GLOBAL_OFFSET_TABLE_. */
- if (got)
+ if (sgot)
{
- unsigned char *contents = got->section->contents + got->hole_offset;
- bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, contents);
+ unsigned char *contents = sgot->contents;
+ bfd_put_32 (output_bfd, (bfd_vma) 0x4e800021 /* blrl */, contents);
if (sdyn == NULL)
bfd_put_32 (output_bfd, (bfd_vma) 0, contents+4);
sdyn->output_section->vma + sdyn->output_offset,
contents+4);
- elf_section_data (got->section->output_section)->this_hdr.sh_entsize = 4;
+ elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
}
- if (info->shared)
- {
- asection *sdynsym;
- asection *s;
- Elf_Internal_Sym sym;
-
- /* Set up the section symbols for the output sections. */
-
- sdynsym = bfd_get_section_by_name (dynobj, ".dynsym");
- BFD_ASSERT (sdynsym != NULL);
-
- sym.st_size = 0;
- sym.st_name = 0;
- sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
- sym.st_other = 0;
-
- for (s = output_bfd->sections; s != NULL; s = s->next)
- {
- int indx;
-
- sym.st_value = s->vma;
-
- indx = elf_section_data (s)->this_idx;
- BFD_ASSERT (indx > 0);
- sym.st_shndx = indx;
-
- bfd_elf32_swap_symbol_out (output_bfd, &sym,
- (PTR) (((Elf32_External_Sym *)
- sdynsym->contents)
- + elf_section_data (s)->dynindx));
- }
-
- /* Set the sh_info field of the output .dynsym section to the
- index of the first global symbol. */
- elf_section_data (sdynsym->output_section)->this_hdr.sh_info =
- bfd_count_sections (output_bfd) + 1;
- }
-
- return true;
+ return TRUE;
}
-
\f
/* The RELOCATE_SECTION function is called by the ELF backend linker
to handle the relocations for a section.
section, which means that the addend must be adjusted
accordingly. */
-static boolean
+static bfd_boolean
ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section,
contents, relocs, local_syms, local_sections)
bfd *output_bfd;
Elf_Internal_Sym *local_syms;
asection **local_sections;
{
- Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
+ 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 *got = (dynobj) ? elf_linker_section (dynobj, LINKER_SECTION_GOT) : NULL;
- elf_linker_section_t *sdata = (dynobj) ? elf_linker_section (dynobj, LINKER_SECTION_SDATA) : NULL;
- elf_linker_section_t *sdata2 = (dynobj) ? elf_linker_section (dynobj, LINKER_SECTION_SDATA2) : NULL;
- Elf_Internal_Rela *rel = relocs;
- Elf_Internal_Rela *relend = relocs + input_section->reloc_count;
- asection *sreloc = NULL;
- boolean ret = true;
+ 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;
+ 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_get_filename (input_bfd),
+ bfd_archive_filename (input_bfd),
bfd_section_name(input_bfd, input_section),
- (long)input_section->reloc_count,
+ (long) input_section->reloc_count,
(info->relocateable) ? " (relocatable)" : "");
#endif
- if (!ppc_elf_howto_table[ R_PPC_ADDR32 ]) /* Initialize howto table if needed */
+ if (info->relocateable)
+ return TRUE;
+
+ if (!ppc_elf_howto_table[R_PPC_ADDR32])
+ /* Initialize howto table if needed. */
ppc_elf_howto_init ();
+ 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");
+ }
+
for (; rel < relend; rel++)
{
- enum ppc_reloc_type r_type = (enum ppc_reloc_type)ELF32_R_TYPE (rel->r_info);
+ 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;
+ 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;
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])
+ if ((unsigned) r_type >= (unsigned) R_PPC_max
+ || !ppc_elf_howto_table[(int) r_type])
{
- (*_bfd_error_handler) ("%s: unknown relocation type %d",
- bfd_get_filename (input_bfd),
- (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;
+ ret = FALSE;
continue;
}
- howto = ppc_elf_howto_table[(int)r_type];
+ howto = ppc_elf_howto_table[(int) r_type];
r_symndx = ELF32_R_SYM (rel->r_info);
- if (info->relocateable)
- {
- /* This is a relocateable link. We don't have to change
- anything, unless the reloc is against a section symbol,
- in which case we have to adjust according to where the
- section symbol winds up in the output section. */
- if (r_symndx < symtab_hdr->sh_info)
- {
- sym = local_syms + r_symndx;
- if ((unsigned)ELF_ST_TYPE (sym->st_info) == STT_SECTION)
- {
- sec = local_sections[r_symndx];
- addend = rel->r_addend += sec->output_offset + sym->st_value;
- }
- }
-
-#ifdef DEBUG
- fprintf (stderr, "\ttype = %s (%d), symbol index = %ld, offset = %ld, addend = %ld\n",
- howto->name,
- (int)r_type,
- r_symndx,
- (long)offset,
- (long)addend);
-#endif
- continue;
- }
-
- /* This is a final link. */
if (r_symndx < symtab_hdr->sh_info)
{
sym = local_syms + r_symndx;
sec = local_sections[r_symndx];
sym_name = "<local symbol>";
- relocation = (sec->output_section->vma
- + sec->output_offset
- + sym->st_value);
+ 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;
}
else
{
|| h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
sym_name = h->root.root.string;
+
+ /* Can this relocation be resolved immediately? */
+ will_become_local = SYMBOL_REFERENCES_LOCAL (info, h);
+
if (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
{
sec = h->root.u.def.section;
- if ((r_type == R_PPC_PLT32
- && h->plt_offset != (bfd_vma) -1)
+ 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
- || ! info->symbolic
- || (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0))
+ && (! info->shared || ! will_become_local))
|| (info->shared
- && (! info->symbolic
- || (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0)
- && (input_section->flags & SEC_ALLOC) != 0
+ && ! 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_ADDR14
|| r_type == R_PPC_ADDR14_BRTAKEN
|| r_type == R_PPC_ADDR14_BRNTAKEN
- || r_type == R_PPC_PLTREL24
|| 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_REL32
|| r_type == R_PPC_SDAREL16
|| r_type == R_PPC_EMB_NADDR32
|| r_type == R_PPC_EMB_NADDR16
|| 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
obscure cases sec->output_section will be NULL. */
relocation = 0;
}
+ else if (sec->output_section == NULL)
+ {
+ (*_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;
+ }
else
relocation = (h->root.u.def.value
+ sec->output_section->vma
}
else if (h->root.type == bfd_link_hash_undefweak)
relocation = 0;
- else if (info->shared)
+ else if (info->shared
+ && (!info->symbolic || info->allow_shlib_undefined)
+ && !info->no_undefined
+ && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
relocation = 0;
else
{
- (*info->callbacks->undefined_symbol)(info,
- h->root.root.string,
- input_bfd,
- input_section,
- rel->r_offset);
- ret = false;
- continue;
+ 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;
}
}
- switch ((int)r_type)
+ switch ((int) r_type)
{
default:
- (*_bfd_error_handler) ("%s: unknown relocation type %d for symbol %s",
- bfd_get_filename (input_bfd),
- (int)r_type, sym_name);
+ (*_bfd_error_handler) (_("%s: unknown relocation type %d for symbol %s"),
+ bfd_archive_filename (input_bfd),
+ (int) r_type, sym_name);
bfd_set_error (bfd_error_bad_value);
- ret = false;
+ ret = FALSE;
continue;
- /* relocations that need no special processing */
- case (int)R_PPC_LOCAL24PC:
- break;
+ case (int) R_PPC_NONE:
+ continue;
- case (int)R_PPC_REL24:
- case (int)R_PPC_REL14:
+ /* Relocations that need no special processing. */
+ case (int) R_PPC_LOCAL24PC:
+ /* It makes no sense to point a local relocation
+ at a symbol not in this object. */
if (h != NULL
- && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
- break;
- /* fall through */
+ && (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ && sec->output_section == NULL)
+ {
+ if (! (*info->callbacks->undefined_symbol) (info,
+ h->root.root.string,
+ input_bfd,
+ input_section,
+ rel->r_offset,
+ TRUE))
+ return FALSE;
+ continue;
+ }
+ break;
- /* Relocations that need to be propigated if this is a shared object */
- case (int)R_PPC_NONE:
- 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_ADDR14:
- case (int)R_PPC_UADDR32:
- case (int)R_PPC_UADDR16:
- case (int)R_PPC_REL32:
- case (int)R_PPC_PLTREL24:
- if (info->shared
- && (input_section->flags & SEC_ALLOC) != 0)
+ /* 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:
+ /* 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))
+ 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)
{
Elf_Internal_Rela outrel;
- boolean skip;
+ bfd_byte *loc;
+ int skip;
#ifdef DEBUG
fprintf (stderr, "ppc_elf_relocate_section need to create relocation for %s\n",
elf_elfheader (input_bfd)->e_shstrndx,
elf_section_data (input_section)->rel_hdr.sh_name));
if (name == NULL)
- return false;
+ return FALSE;
BFD_ASSERT (strncmp (name, ".rela", 5) == 0
&& strcmp (bfd_get_section_name (input_bfd,
BFD_ASSERT (sreloc != NULL);
}
- skip = false;
-
- if (elf_section_data (input_section)->stab_info == NULL)
- outrel.r_offset = rel->r_offset;
- else
- {
- bfd_vma off;
-
- off = (_bfd_stab_section_offset
- (output_bfd, &elf_hash_table (info)->stab_info,
- input_section,
- &elf_section_data (input_section)->stab_info,
- rel->r_offset));
- if (off == (bfd_vma) -1)
- skip = true;
- outrel.r_offset = off;
- }
+ skip = 0;
+ outrel.r_offset =
+ _bfd_elf_section_offset (output_bfd, info, input_section,
+ rel->r_offset);
+ if (outrel.r_offset == (bfd_vma) -1
+ || outrel.r_offset == (bfd_vma) -2)
+ skip = (int) outrel.r_offset;
outrel.r_offset += (input_section->output_section->vma
+ input_section->output_offset);
memset (&outrel, 0, sizeof outrel);
/* h->dynindx may be -1 if this symbol was marked to
become local. */
- else if (h != NULL
- && ((! info->symbolic && h->dynindx != -1)
- || (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0))
+ else if (! will_become_local)
{
- BFD_ASSERT (h->dynindx != -1);
outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
outrel.r_addend = rel->r_addend;
}
else
{
+ outrel.r_addend = relocation + rel->r_addend;
+
if (r_type == R_PPC_ADDR32)
- {
- outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
- outrel.r_addend = relocation + rel->r_addend;
- }
+ outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
else
{
long indx;
== bfd_link_hash_defweak));
sec = h->root.u.def.section;
}
- if (sec != NULL && bfd_is_abs_section (sec))
+
+ if (bfd_is_abs_section (sec))
indx = 0;
else if (sec == NULL || sec->owner == NULL)
{
bfd_set_error (bfd_error_bad_value);
- return false;
+ return FALSE;
}
else
{
asection *osec;
+ /* We are turning this relocation into one
+ against a section symbol. It would be
+ proper to subtract the symbol's value,
+ osec->vma, from the emitted reloc addend,
+ but ld.so expects buggy relocs. */
osec = sec->output_section;
indx = elf_section_data (osec)->dynindx;
- if (indx == 0)
- abort ();
+ 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);
+ }
+#endif
}
outrel.r_info = ELF32_R_INFO (indx, r_type);
- outrel.r_addend = relocation + rel->r_addend;
}
}
- bfd_elf32_swap_reloca_out (output_bfd, &outrel,
- (((Elf32_External_Rela *)
- sreloc->contents)
- + sreloc->reloc_count));
- ++sreloc->reloc_count;
+ loc = sreloc->contents;
+ loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
+ bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
- /* This reloc will be computed at runtime, so there's no
- need to do anything now. */
- continue;
+ if (skip == -1)
+ continue;
+
+ /* This reloc will be computed at runtime. We clear the memory
+ so that it contains predictable value. */
+ if (! skip
+ && ((input_section->flags & SEC_ALLOC) != 0
+ || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
+ {
+ relocation = howto->pc_relative ? outrel.r_offset : 0;
+ addend = 0;
+ break;
+ }
+ }
+
+ /* Arithmetic adjust relocations that aren't going into a
+ 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:
+ 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, insn, contents + offset);
+ 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:
+ 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, insn, contents + offset);
+ 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 = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info,
- got, h, relocation, rel,
- R_PPC_RELATIVE);
+ 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);
+
+ 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];
+
+ /* 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
+ {
+
+ 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;
+ }
+
+ bfd_put_32 (output_bfd, relocation, sgot->contents + off);
+ local_got_offsets[r_symndx] |= 1;
+ }
+
+ relocation = sgot->output_offset + off - 4;
+ }
+ if (r_type == R_PPC_GOT16_HA)
+ addend += ((relocation + addend) & 0x8000) << 1;
break;
/* Indirect .sdata relocation */
- case (int)R_PPC_EMB_SDAI16:
+ 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,
break;
/* Indirect .sdata2 relocation */
- case (int)R_PPC_EMB_SDA2I16:
+ 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,
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);
+ case (int) R_PPC_TOC16: /* phony GOT16 relocations */
+ BFD_ASSERT (sec != (asection *) 0);
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)
addend -= sec->output_section->vma + sec->output_offset + 0x8000;
break;
- /* arithmetic adjust relocations */
- case (int)R_PPC_ADDR16_HA:
- BFD_ASSERT (sec != (asection *)0);
- addend += ((relocation + addend) & 0x8000) << 1;
- break;
+ case (int) R_PPC_PLTREL24:
+ /* Relocation is to the entry for this symbol in the
+ procedure linkage table. */
+ BFD_ASSERT (h != NULL);
- /* relocate against _SDA_BASE_ */
- case (int)R_PPC_SDAREL16:
- BFD_ASSERT (sec != (asection *)0);
- if (strcmp (bfd_get_section_name (abfd, sec), ".sdata") != 0
- && strcmp (bfd_get_section_name (abfd, sec), ".sbss") != 0)
+ if (h->plt.offset == (bfd_vma) -1
+ || splt == NULL)
{
- (*_bfd_error_handler) ("%s: The target (%s) of a %s relocation is in the wrong section (%s)",
- bfd_get_filename (input_bfd),
- sym_name,
- ppc_elf_howto_table[ (int)r_type ]->name,
- bfd_get_section_name (abfd, sec));
-
- bfd_set_error (bfd_error_bad_value);
- ret = false;
- continue;
+ /* We didn't make a PLT entry for this symbol. This
+ happens when statically linking PIC code, or when
+ using -Bsymbolic. */
+ break;
}
- 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);
+
+ relocation = (splt->output_section->vma
+ + splt->output_offset
+ + h->plt.offset);
break;
+ /* relocate against _SDA_BASE_ */
+ case (int) R_PPC_SDAREL16:
+ {
+ const char *name;
+
+ BFD_ASSERT (sec != (asection *) 0);
+ 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);
+ }
+ 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);
+ }
+ break;
/* relocate against _SDA2_BASE_ */
- case (int)R_PPC_EMB_SDA2REL:
- BFD_ASSERT (sec != (asection *)0);
- if (strcmp (bfd_get_section_name (abfd, sec), ".sdata2") != 0
- && strcmp (bfd_get_section_name (abfd, sec), ".sbss2") != 0)
- {
- (*_bfd_error_handler) ("%s: The target (%s) of a %s relocation is in the wrong section (%s)",
- bfd_get_filename (input_bfd),
- sym_name,
- ppc_elf_howto_table[ (int)r_type ]->name,
- bfd_get_section_name (abfd, sec));
+ case (int) R_PPC_EMB_SDA2REL:
+ {
+ const char *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);
- break;
+ BFD_ASSERT (sec != (asection *) 0);
+ 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_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);
+ }
+ break;
/* relocate against either _SDA_BASE_, _SDA2_BASE_, or 0 */
- case (int)R_PPC_EMB_SDA21:
- case (int)R_PPC_EMB_RELSDA:
+ case (int) R_PPC_EMB_SDA21:
+ case (int) R_PPC_EMB_RELSDA:
{
- const char *name = bfd_get_section_name (abfd, sec);
+ const char *name;
int reg;
- BFD_ASSERT (sec != (asection *)0);
- if (strcmp (name, ".sdata") == 0 || strcmp (name, ".sbss") == 0)
+ BFD_ASSERT (sec != (asection *) 0);
+ 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] == '.'))))
{
reg = 13;
addend -= (sdata->sym_hash->root.u.def.value
+ sdata->sym_hash->root.u.def.section->output_offset);
}
- else if (strcmp (name, ".sdata2") == 0 || strcmp (name, ".sbss2") == 0)
+ else if (strncmp (name, ".sdata2", 7) == 0
+ || strncmp (name, ".sbss2", 6) == 0)
{
reg = 2;
addend -= (sdata2->sym_hash->root.u.def.value
+ sdata2->sym_hash->root.u.def.section->output_offset);
}
- else if (strcmp (name, ".PPC.EMB.sdata0") == 0 || strcmp (name, ".PPC.EMB.sbss0") == 0)
+ else if (strcmp (name, ".PPC.EMB.sdata0") == 0
+ || strcmp (name, ".PPC.EMB.sbss0") == 0)
{
reg = 0;
}
else
{
- (*_bfd_error_handler) ("%s: The target (%s) of a %s relocation is in the wrong section (%s)",
- bfd_get_filename (input_bfd),
+ (*_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,
- bfd_get_section_name (abfd, sec));
+ ppc_elf_howto_table[(int) r_type]->name,
+ name);
bfd_set_error (bfd_error_bad_value);
- ret = false;
+ ret = FALSE;
continue;
}
{ /* fill in register field */
insn = bfd_get_32 (output_bfd, contents + offset);
insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
- bfd_put_32 (output_bfd, insn, contents + offset);
+ bfd_put_32 (output_bfd, (bfd_vma) insn, contents + 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);
+ 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);
+ case (int) R_PPC_SECTOFF_HA:
+ BFD_ASSERT (sec != (asection *) 0);
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:
- addend -= 2*relocation;
+ 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:
+ addend -= 2 * relocation;
break;
- case (int)R_PPC_EMB_NADDR16_HA:
- addend -= 2*relocation;
+ 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:
+ 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_get_filename (input_bfd),
- ppc_elf_howto_table[ (int)r_type ]->name,
+ 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);
bfd_set_error (bfd_error_invalid_operation);
- ret = false;
+ ret = FALSE;
continue;
- }
+ case (int) R_PPC_GNU_VTINHERIT:
+ case (int) R_PPC_GNU_VTENTRY:
+ /* These are no-ops in the end. */
+ continue;
+ }
#ifdef DEBUG
fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, offset = %ld, addend = %ld\n",
howto->name,
- (int)r_type,
+ (int) r_type,
sym_name,
r_symndx,
- (long)offset,
- (long)addend);
+ (long) offset,
+ (long) addend);
#endif
r = _bfd_final_link_relocate (howto,
relocation,
addend);
- if (r != bfd_reloc_ok)
+ if (r == bfd_reloc_ok)
+ ;
+ else if (r == bfd_reloc_overflow)
{
- ret = false;
- switch (r)
+ const char *name;
+
+ if (h != NULL)
{
- default:
- break;
+ 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. */
- case bfd_reloc_overflow:
- {
- const char *name;
+ continue;
+ }
- if (h != NULL)
- name = h->root.root.string;
- else
- {
- name = bfd_elf_string_from_elf_section (input_bfd,
- symtab_hdr->sh_link,
- sym->st_name);
- if (name == NULL)
- break;
-
- if (*name == '\0')
- name = bfd_section_name (input_bfd, sec);
- }
+ name = h->root.root.string;
+ }
+ else
+ {
+ 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);
+ }
- (*info->callbacks->reloc_overflow)(info,
+ if (! (*info->callbacks->reloc_overflow) (info,
name,
howto->name,
(bfd_vma) 0,
input_bfd,
input_section,
- offset);
- }
- break;
-
- }
+ 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;
+}
+
+static void
+apuinfo_list_finish PARAMS ((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. */
+
+void
+ppc_elf_begin_write_processing (abfd, link_info)
+ 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->_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;
+
+ /* 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->_raw_size;
+ if (length < 24)
+ {
+ error_message = _("corrupt or empty %s section in %s");
+ 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 %s");
+ goto fail;
+ }
+
+ /* 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 (strcmp (ptr + 12, APUINFO_LABEL) != 0)
+ goto fail;
+
+ /* Get the number of apuinfo entries. */
+ datum = bfd_get_32 (ibfd, ptr + 4);
+ if ((datum * 4 + 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++)
+ apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + (i * 4)));
+
+ /* 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 %s");
+
+ fail:
+ free (buffer);
+
+ if (error_message)
+ _bfd_error_handler (error_message, APUINFO_SECTION_NAME,
+ bfd_archive_filename (ibfd));
+}
+
+
+/* Prevent the output section from accumulating the input sections'
+ contents. We have already stored this in our linked list structure. */
+
+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;
+}
+
+
+/* Finally we can generate the output section. */
+
+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;
+
+ asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
+ if (asec == NULL)
+ return;
+
+ if (apuinfo_list_length () == 0)
+ return;
+
+ length = asec->_raw_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, buffer + 4);
+ bfd_put_32 (abfd, 0x2, buffer + 8);
+ strcpy (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->_raw_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
#define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
#define TARGET_LITTLE_NAME "elf32-powerpcle"
#define ELF_MACHINE_ALT2 EM_PPC_OLD
#endif
-#define bfd_elf32_bfd_copy_private_bfd_data ppc_elf_copy_private_bfd_data
+#define elf_backend_plt_not_loaded 1
+#define elf_backend_got_symbol_offset 4
+#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_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
-#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
+#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 elf_backend_object_p ppc_elf_object_p
+#define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
+#define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
#define elf_backend_section_from_shdr ppc_elf_section_from_shdr
#define elf_backend_relocate_section ppc_elf_relocate_section
-#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
+#define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
#define elf_backend_check_relocs ppc_elf_check_relocs
+#define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
#define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
#define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
#define elf_backend_size_dynamic_sections ppc_elf_size_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
#include "elf32-target.h"
projects / deliverable / binutils-gdb.git / blobdiff