#include "bfd.h"
#include "sysdep.h"
#ifdef ANSI_PROTOTYPES
#include <stdarg.h>
#else
#include <varargs.h>
#endif
#include <strings.h>
#include "bfdlink.h"
#include "libbfd.h"
#include "elf-bfd.h"
#include "elf/xtensa.h"
#include "xtensa-isa.h"
#include "xtensa-config.h"
static void elf_xtensa_info_to_howto_rela
PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
static reloc_howto_type *elf_xtensa_reloc_type_lookup
PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
extern int xtensa_read_table_entries
PARAMS ((bfd *, asection *, property_table_entry **, const char *));
static bfd_boolean elf_xtensa_check_relocs
PARAMS ((bfd *, struct bfd_link_info *, asection *,
const Elf_Internal_Rela *));
static void elf_xtensa_hide_symbol
PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean));
static asection *elf_xtensa_gc_mark_hook
PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
struct elf_link_hash_entry *, Elf_Internal_Sym *));
static bfd_boolean elf_xtensa_gc_sweep_hook
PARAMS ((bfd *, struct bfd_link_info *, asection *,
const Elf_Internal_Rela *));
static bfd_boolean elf_xtensa_create_dynamic_sections
PARAMS ((bfd *, struct bfd_link_info *));
static bfd_boolean elf_xtensa_adjust_dynamic_symbol
PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
static bfd_boolean elf_xtensa_size_dynamic_sections
PARAMS ((bfd *, struct bfd_link_info *));
static bfd_boolean elf_xtensa_modify_segment_map
PARAMS ((bfd *, struct bfd_link_info *));
static bfd_boolean elf_xtensa_relocate_section
PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
static bfd_boolean elf_xtensa_relax_section
PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *again));
static bfd_boolean elf_xtensa_finish_dynamic_symbol
PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
Elf_Internal_Sym *));
static bfd_boolean elf_xtensa_finish_dynamic_sections
PARAMS ((bfd *, struct bfd_link_info *));
static bfd_boolean elf_xtensa_merge_private_bfd_data
PARAMS ((bfd *, bfd *));
static bfd_boolean elf_xtensa_set_private_flags
PARAMS ((bfd *, flagword));
extern flagword elf_xtensa_get_private_bfd_flags
PARAMS ((bfd *));
static bfd_boolean elf_xtensa_print_private_bfd_data
PARAMS ((bfd *, PTR));
static bfd_boolean elf_xtensa_object_p
PARAMS ((bfd *));
static void elf_xtensa_final_write_processing
PARAMS ((bfd *, bfd_boolean));
static enum elf_reloc_type_class elf_xtensa_reloc_type_class
PARAMS ((const Elf_Internal_Rela *));
static bfd_boolean elf_xtensa_discard_info
PARAMS ((bfd *, struct elf_reloc_cookie *, struct bfd_link_info *));
static bfd_boolean elf_xtensa_ignore_discarded_relocs
PARAMS ((asection *));
static bfd_boolean elf_xtensa_grok_prstatus
PARAMS ((bfd *, Elf_Internal_Note *));
static bfd_boolean elf_xtensa_grok_psinfo
PARAMS ((bfd *, Elf_Internal_Note *));
static bfd_boolean elf_xtensa_new_section_hook
PARAMS ((bfd *, asection *));
static bfd_boolean xtensa_elf_dynamic_symbol_p
PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *));
static int property_table_compare
PARAMS ((const PTR, const PTR));
static bfd_boolean elf_xtensa_in_literal_pool
PARAMS ((property_table_entry *, int, bfd_vma));
static void elf_xtensa_make_sym_local
PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
static bfd_boolean add_extra_plt_sections
PARAMS ((bfd *, int));
static bfd_boolean elf_xtensa_fix_refcounts
PARAMS ((struct elf_link_hash_entry *, PTR));
static bfd_boolean elf_xtensa_allocate_plt_size
PARAMS ((struct elf_link_hash_entry *, PTR));
static bfd_boolean elf_xtensa_allocate_got_size
PARAMS ((struct elf_link_hash_entry *, PTR));
static void elf_xtensa_allocate_local_got_size
PARAMS ((struct bfd_link_info *, asection *));
static bfd_reloc_status_type elf_xtensa_do_reloc
PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_vma, bfd_byte *,
bfd_vma, bfd_boolean, char **));
static char * vsprint_msg
VPARAMS ((const char *, const char *, int, ...));
static char *build_encoding_error_message
PARAMS ((xtensa_opcode, xtensa_encode_result));
static bfd_reloc_status_type bfd_elf_xtensa_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
static void do_fix_for_relocatable_link
PARAMS ((Elf_Internal_Rela *, bfd *, asection *));
static void do_fix_for_final_link
PARAMS ((Elf_Internal_Rela *, asection *, bfd_vma *));
static bfd_vma elf_xtensa_create_plt_entry
PARAMS ((bfd *, bfd *, unsigned));
static int elf_xtensa_combine_prop_entries
PARAMS ((bfd *, asection *, asection *));
static bfd_boolean elf_xtensa_discard_info_for_section
PARAMS ((bfd *, struct elf_reloc_cookie *, struct bfd_link_info *,
asection *));
static void init_call_opcodes
PARAMS ((void));
static bfd_boolean is_indirect_call_opcode
PARAMS ((xtensa_opcode));
static bfd_boolean is_direct_call_opcode
PARAMS ((xtensa_opcode));
static bfd_boolean is_windowed_call_opcode
PARAMS ((xtensa_opcode));
static xtensa_opcode get_l32r_opcode
PARAMS ((void));
static bfd_vma l32r_offset
PARAMS ((bfd_vma, bfd_vma));
static int get_relocation_opnd
PARAMS ((Elf_Internal_Rela *));
static xtensa_opcode get_relocation_opcode
PARAMS ((asection *, bfd_byte *, Elf_Internal_Rela *));
static bfd_boolean is_l32r_relocation
PARAMS ((asection *, bfd_byte *, Elf_Internal_Rela *));
static bfd_reloc_status_type elf_xtensa_do_asm_simplify
PARAMS ((bfd_byte *, bfd_vma, bfd_vma));
static bfd_reloc_status_type contract_asm_expansion
PARAMS ((bfd_byte *, bfd_vma, Elf_Internal_Rela *));
static xtensa_opcode swap_callx_for_call_opcode
PARAMS ((xtensa_opcode));
static xtensa_opcode get_expanded_call_opcode
PARAMS ((bfd_byte *, int));
static Elf_Internal_Rela *retrieve_internal_relocs
PARAMS ((bfd *, asection *, bfd_boolean));
static void pin_internal_relocs
PARAMS ((asection *, Elf_Internal_Rela *));
static void release_internal_relocs
PARAMS ((asection *, Elf_Internal_Rela *));
static bfd_byte *retrieve_contents
PARAMS ((bfd *, asection *, bfd_boolean));
static void pin_contents
PARAMS ((asection *, bfd_byte *));
static void release_contents
PARAMS ((asection *, bfd_byte *));
static Elf_Internal_Sym *retrieve_local_syms
PARAMS ((bfd *));
static asection *elf_xtensa_get_plt_section
PARAMS ((bfd *, int));
static asection *elf_xtensa_get_gotplt_section
PARAMS ((bfd *, int));
static asection *get_elf_r_symndx_section
PARAMS ((bfd *, unsigned long));
static struct elf_link_hash_entry *get_elf_r_symndx_hash_entry
PARAMS ((bfd *, unsigned long));
static bfd_vma get_elf_r_symndx_offset
PARAMS ((bfd *, unsigned long));
static bfd_boolean pcrel_reloc_fits
PARAMS ((xtensa_operand, bfd_vma, bfd_vma));
static bfd_boolean xtensa_is_property_section
PARAMS ((asection *));
static bfd_boolean xtensa_is_littable_section
PARAMS ((asection *));
static bfd_boolean is_literal_section
PARAMS ((asection *));
static int internal_reloc_compare
PARAMS ((const PTR, const PTR));
extern char *xtensa_get_property_section_name
PARAMS ((asection *, const char *));
typedef void (*deps_callback_t)
PARAMS ((asection *, bfd_vma, asection *, bfd_vma, PTR));
extern bfd_boolean xtensa_callback_required_dependence
PARAMS ((bfd *, asection *, struct bfd_link_info *,
deps_callback_t, PTR));
typedef struct xtensa_relax_info_struct xtensa_relax_info;
static int plt_reloc_count = 0;
static bfd_boolean relaxing_section = FALSE;
static reloc_howto_type elf_howto_table[] =
{
HOWTO (R_XTENSA_NONE, 0, 0, 0, FALSE, 0, complain_overflow_dont,
bfd_elf_xtensa_reloc, "R_XTENSA_NONE",
FALSE, 0x00000000, 0x00000000, FALSE),
HOWTO (R_XTENSA_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_xtensa_reloc, "R_XTENSA_32",
TRUE, 0xffffffff, 0xffffffff, FALSE),
HOWTO (R_XTENSA_RTLD, 0, 2, 32, FALSE, 0, complain_overflow_dont,
NULL, "R_XTENSA_RTLD",
FALSE, 0x00000000, 0x00000000, FALSE),
HOWTO (R_XTENSA_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_XTENSA_GLOB_DAT",
FALSE, 0xffffffff, 0xffffffff, FALSE),
HOWTO (R_XTENSA_JMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_XTENSA_JMP_SLOT",
FALSE, 0xffffffff, 0xffffffff, FALSE),
HOWTO (R_XTENSA_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_XTENSA_RELATIVE",
FALSE, 0xffffffff, 0xffffffff, FALSE),
HOWTO (R_XTENSA_PLT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_xtensa_reloc, "R_XTENSA_PLT",
FALSE, 0xffffffff, 0xffffffff, FALSE),
EMPTY_HOWTO (7),
HOWTO (R_XTENSA_OP0, 0, 0, 0, TRUE, 0, complain_overflow_dont,
bfd_elf_xtensa_reloc, "R_XTENSA_OP0",
FALSE, 0x00000000, 0x00000000, TRUE),
HOWTO (R_XTENSA_OP1, 0, 0, 0, TRUE, 0, complain_overflow_dont,
bfd_elf_xtensa_reloc, "R_XTENSA_OP1",
FALSE, 0x00000000, 0x00000000, TRUE),
HOWTO (R_XTENSA_OP2, 0, 0, 0, TRUE, 0, complain_overflow_dont,
bfd_elf_xtensa_reloc, "R_XTENSA_OP2",
FALSE, 0x00000000, 0x00000000, TRUE),
HOWTO (R_XTENSA_ASM_EXPAND, 0, 0, 0, TRUE, 0, complain_overflow_dont,
bfd_elf_xtensa_reloc, "R_XTENSA_ASM_EXPAND",
FALSE, 0x00000000, 0x00000000, FALSE),
HOWTO (R_XTENSA_ASM_SIMPLIFY, 0, 0, 0, TRUE, 0, complain_overflow_dont,
bfd_elf_xtensa_reloc, "R_XTENSA_ASM_SIMPLIFY",
FALSE, 0x00000000, 0x00000000, TRUE),
EMPTY_HOWTO (13),
EMPTY_HOWTO (14),
HOWTO (R_XTENSA_GNU_VTINHERIT, 0, 2, 0, FALSE, 0, complain_overflow_dont,
NULL, "R_XTENSA_GNU_VTINHERIT",
FALSE, 0x00000000, 0x00000000, FALSE),
HOWTO (R_XTENSA_GNU_VTENTRY, 0, 2, 0, FALSE, 0, complain_overflow_dont,
_bfd_elf_rel_vtable_reloc_fn, "R_XTENSA_GNU_VTENTRY",
FALSE, 0x00000000, 0x00000000, FALSE)
};
#ifdef DEBUG_GEN_RELOC
#define TRACE(str) \
fprintf (stderr, "Xtensa bfd reloc lookup %d (%s)\n", code, str)
#else
#define TRACE(str)
#endif
static reloc_howto_type *
elf_xtensa_reloc_type_lookup (abfd, code)
bfd *abfd ATTRIBUTE_UNUSED;
bfd_reloc_code_real_type code;
{
switch (code)
{
case BFD_RELOC_NONE:
TRACE ("BFD_RELOC_NONE");
return &elf_howto_table[(unsigned) R_XTENSA_NONE ];
case BFD_RELOC_32:
TRACE ("BFD_RELOC_32");
return &elf_howto_table[(unsigned) R_XTENSA_32 ];
case BFD_RELOC_XTENSA_RTLD:
TRACE ("BFD_RELOC_XTENSA_RTLD");
return &elf_howto_table[(unsigned) R_XTENSA_RTLD ];
case BFD_RELOC_XTENSA_GLOB_DAT:
TRACE ("BFD_RELOC_XTENSA_GLOB_DAT");
return &elf_howto_table[(unsigned) R_XTENSA_GLOB_DAT ];
case BFD_RELOC_XTENSA_JMP_SLOT:
TRACE ("BFD_RELOC_XTENSA_JMP_SLOT");
return &elf_howto_table[(unsigned) R_XTENSA_JMP_SLOT ];
case BFD_RELOC_XTENSA_RELATIVE:
TRACE ("BFD_RELOC_XTENSA_RELATIVE");
return &elf_howto_table[(unsigned) R_XTENSA_RELATIVE ];
case BFD_RELOC_XTENSA_PLT:
TRACE ("BFD_RELOC_XTENSA_PLT");
return &elf_howto_table[(unsigned) R_XTENSA_PLT ];
case BFD_RELOC_XTENSA_OP0:
TRACE ("BFD_RELOC_XTENSA_OP0");
return &elf_howto_table[(unsigned) R_XTENSA_OP0 ];
case BFD_RELOC_XTENSA_OP1:
TRACE ("BFD_RELOC_XTENSA_OP1");
return &elf_howto_table[(unsigned) R_XTENSA_OP1 ];
case BFD_RELOC_XTENSA_OP2:
TRACE ("BFD_RELOC_XTENSA_OP2");
return &elf_howto_table[(unsigned) R_XTENSA_OP2 ];
case BFD_RELOC_XTENSA_ASM_EXPAND:
TRACE ("BFD_RELOC_XTENSA_ASM_EXPAND");
return &elf_howto_table[(unsigned) R_XTENSA_ASM_EXPAND ];
case BFD_RELOC_XTENSA_ASM_SIMPLIFY:
TRACE ("BFD_RELOC_XTENSA_ASM_SIMPLIFY");
return &elf_howto_table[(unsigned) R_XTENSA_ASM_SIMPLIFY ];
case BFD_RELOC_VTABLE_INHERIT:
TRACE ("BFD_RELOC_VTABLE_INHERIT");
return &elf_howto_table[(unsigned) R_XTENSA_GNU_VTINHERIT ];
case BFD_RELOC_VTABLE_ENTRY:
TRACE ("BFD_RELOC_VTABLE_ENTRY");
return &elf_howto_table[(unsigned) R_XTENSA_GNU_VTENTRY ];
default:
break;
}
TRACE ("Unknown");
return NULL;
}
static void
elf_xtensa_info_to_howto_rela (abfd, cache_ptr, dst)
bfd *abfd ATTRIBUTE_UNUSED;
arelent *cache_ptr;
Elf_Internal_Rela *dst;
{
unsigned int r_type = ELF32_R_TYPE (dst->r_info);
BFD_ASSERT (r_type < (unsigned int) R_XTENSA_max);
cache_ptr->howto = &elf_howto_table[r_type];
}
#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so"
#define PLT_ENTRY_SIZE 16
#define PLT_ENTRIES_PER_CHUNK 254
static const bfd_byte elf_xtensa_be_plt_entry[PLT_ENTRY_SIZE] =
{
0x6c, 0x10, 0x04,
0x18, 0x00, 0x00,
0x1a, 0x00, 0x00,
0x1b, 0x00, 0x00,
0x0a, 0x80, 0x00,
0
};
static const bfd_byte elf_xtensa_le_plt_entry[PLT_ENTRY_SIZE] =
{
0x36, 0x41, 0x00,
0x81, 0x00, 0x00,
0xa1, 0x00, 0x00,
0xb1, 0x00, 0x00,
0xa0, 0x08, 0x00,
0
};
static inline bfd_boolean
xtensa_elf_dynamic_symbol_p (h, info)
struct elf_link_hash_entry *h;
struct bfd_link_info *info;
{
return _bfd_elf_dynamic_symbol_p (h, info, 0);
}
static int
property_table_compare (ap, bp)
const PTR ap;
const PTR bp;
{
const property_table_entry *a = (const property_table_entry *) ap;
const property_table_entry *b = (const property_table_entry *) bp;
if ((b->address >= a->address && b->address < (a->address + a->size))
|| (a->address >= b->address && a->address < (b->address + b->size)))
return 0;
return (a->address - b->address);
}
int
xtensa_read_table_entries (abfd, section, table_p, sec_name)
bfd *abfd;
asection *section;
property_table_entry **table_p;
const char *sec_name;
{
asection *table_section;
char *table_section_name;
bfd_size_type table_size = 0;
bfd_byte *table_data;
property_table_entry *blocks;
int block_count;
bfd_size_type num_records;
Elf_Internal_Rela *internal_relocs;
table_section_name =
xtensa_get_property_section_name (section, sec_name);
table_section = bfd_get_section_by_name (abfd, table_section_name);
free (table_section_name);
if (table_section != NULL)
table_size = bfd_get_section_size_before_reloc (table_section);
if (table_size == 0)
{
*table_p = NULL;
return 0;
}
num_records = table_size / 8;
table_data = retrieve_contents (abfd, table_section, TRUE);
blocks = (property_table_entry *)
bfd_malloc (num_records * sizeof (property_table_entry));
block_count = 0;
internal_relocs = retrieve_internal_relocs (abfd, table_section, TRUE);
if (internal_relocs)
{
unsigned i;
for (i = 0; i < table_section->reloc_count; i++)
{
Elf_Internal_Rela *rel = &internal_relocs[i];
unsigned long r_symndx;
if (ELF32_R_TYPE (rel->r_info) == R_XTENSA_NONE)
continue;
BFD_ASSERT (ELF32_R_TYPE (rel->r_info) == R_XTENSA_32);
r_symndx = ELF32_R_SYM (rel->r_info);
if (get_elf_r_symndx_section (abfd, r_symndx) == section)
{
bfd_vma sym_off = get_elf_r_symndx_offset (abfd, r_symndx);
blocks[block_count].address =
(section->vma + sym_off + rel->r_addend
+ bfd_get_32 (abfd, table_data + rel->r_offset));
blocks[block_count].size =
bfd_get_32 (abfd, table_data + rel->r_offset + 4);
block_count++;
}
}
}
else
{
bfd_vma off;
for (off = 0; off < table_size; off += 8)
{
bfd_vma address = bfd_get_32 (abfd, table_data + off);
if (address >= section->vma
&& address < ( section->vma + section->_raw_size))
{
blocks[block_count].address = address;
blocks[block_count].size =
bfd_get_32 (abfd, table_data + off + 4);
block_count++;
}
}
}
release_contents (table_section, table_data);
release_internal_relocs (table_section, internal_relocs);
if (block_count > 0)
{
qsort (blocks, block_count, sizeof (property_table_entry),
property_table_compare);
}
*table_p = blocks;
return block_count;
}
static bfd_boolean
elf_xtensa_in_literal_pool (lit_table, lit_table_size, addr)
property_table_entry *lit_table;
int lit_table_size;
bfd_vma addr;
{
property_table_entry entry;
if (lit_table_size == 0)
return FALSE;
entry.address = addr;
entry.size = 1;
if (bsearch (&entry, lit_table, lit_table_size,
sizeof (property_table_entry), property_table_compare))
return TRUE;
return FALSE;
}
static bfd_boolean
elf_xtensa_check_relocs (abfd, info, sec, relocs)
bfd *abfd;
struct bfd_link_info *info;
asection *sec;
const Elf_Internal_Rela *relocs;
{
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
const Elf_Internal_Rela *rel;
const Elf_Internal_Rela *rel_end;
property_table_entry *lit_table;
int ltblsize;
if (info->relocatable)
return TRUE;
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (abfd);
ltblsize = xtensa_read_table_entries (abfd, sec, &lit_table,
XTENSA_LIT_SEC_NAME);
if (ltblsize < 0)
return FALSE;
rel_end = relocs + sec->reloc_count;
for (rel = relocs; rel < rel_end; rel++)
{
unsigned int r_type;
unsigned long r_symndx;
struct elf_link_hash_entry *h;
r_symndx = ELF32_R_SYM (rel->r_info);
r_type = ELF32_R_TYPE (rel->r_info);
if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
{
(*_bfd_error_handler) (_("%s: bad symbol index: %d"),
bfd_archive_filename (abfd),
r_symndx);
return FALSE;
}
if (r_symndx < symtab_hdr->sh_info)
h = NULL;
else
{
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
while (h->root.type == bfd_link_hash_indirect
|| h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
}
switch (r_type)
{
case R_XTENSA_32:
if (h == NULL)
goto local_literal;
if ((sec->flags & SEC_ALLOC) != 0)
{
if ((sec->flags & SEC_READONLY) != 0
&& !elf_xtensa_in_literal_pool (lit_table, ltblsize,
sec->vma + rel->r_offset))
h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
if (h->got.refcount <= 0)
h->got.refcount = 1;
else
h->got.refcount += 1;
}
break;
case R_XTENSA_PLT:
if (h == NULL)
goto local_literal;
if ((sec->flags & SEC_ALLOC) != 0)
{
if ((sec->flags & SEC_READONLY) != 0
&& !elf_xtensa_in_literal_pool (lit_table, ltblsize,
sec->vma + rel->r_offset))
h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
if (h->plt.refcount <= 0)
{
h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
h->plt.refcount = 1;
}
else
h->plt.refcount += 1;
plt_reloc_count += 1;
if (elf_hash_table (info)->dynamic_sections_created)
{
if (!add_extra_plt_sections (elf_hash_table (info)->dynobj,
plt_reloc_count))
return FALSE;
}
}
break;
local_literal:
if ((sec->flags & SEC_ALLOC) != 0)
{
bfd_signed_vma *local_got_refcounts;
local_got_refcounts = elf_local_got_refcounts (abfd);
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;
}
local_got_refcounts[r_symndx] += 1;
if (info->shared
&& (sec->flags & SEC_READONLY) != 0
&& !elf_xtensa_in_literal_pool (lit_table, ltblsize,
sec->vma + rel->r_offset))
info->flags |= DF_TEXTREL;
}
break;
case R_XTENSA_OP0:
case R_XTENSA_OP1:
case R_XTENSA_OP2:
case R_XTENSA_ASM_EXPAND:
case R_XTENSA_ASM_SIMPLIFY:
break;
case R_XTENSA_GNU_VTINHERIT:
if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
return FALSE;
break;
case R_XTENSA_GNU_VTENTRY:
if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
return FALSE;
break;
default:
break;
}
}
free (lit_table);
return TRUE;
}
static void
elf_xtensa_hide_symbol (info, h, force_local)
struct bfd_link_info *info;
struct elf_link_hash_entry *h;
bfd_boolean force_local;
{
elf_xtensa_make_sym_local (info, h);
_bfd_elf_link_hash_hide_symbol (info, h, force_local);
}
static asection *
elf_xtensa_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_XTENSA_GNU_VTINHERIT:
case R_XTENSA_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;
}
static bfd_boolean
elf_xtensa_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;
if ((sec->flags & SEC_ALLOC) == 0)
return TRUE;
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++)
{
unsigned long r_symndx;
unsigned int r_type;
struct elf_link_hash_entry *h = NULL;
r_symndx = ELF32_R_SYM (rel->r_info);
if (r_symndx >= symtab_hdr->sh_info)
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
r_type = ELF32_R_TYPE (rel->r_info);
switch (r_type)
{
case R_XTENSA_32:
if (h == NULL)
goto local_literal;
if (h->got.refcount > 0)
h->got.refcount--;
break;
case R_XTENSA_PLT:
if (h == NULL)
goto local_literal;
if (h->plt.refcount > 0)
h->plt.refcount--;
break;
local_literal:
if (local_got_refcounts[r_symndx] > 0)
local_got_refcounts[r_symndx] -= 1;
break;
default:
break;
}
}
return TRUE;
}
static bfd_boolean
elf_xtensa_create_dynamic_sections (dynobj, info)
bfd *dynobj;
struct bfd_link_info *info;
{
flagword flags, noalloc_flags;
asection *s;
if (! _bfd_elf_create_dynamic_sections (dynobj, info))
return FALSE;
if (!add_extra_plt_sections (dynobj, plt_reloc_count))
return FALSE;
noalloc_flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY
| SEC_LINKER_CREATED | SEC_READONLY);
flags = noalloc_flags | SEC_ALLOC | SEC_LOAD;
s = bfd_get_section_by_name (dynobj, ".got.plt");
if (s == NULL
|| ! bfd_set_section_flags (dynobj, s, flags))
return FALSE;
s = bfd_make_section (dynobj, ".rela.got");
if (s == NULL
|| ! bfd_set_section_flags (dynobj, s, flags)
|| ! bfd_set_section_alignment (dynobj, s, 2))
return FALSE;
s = bfd_make_section (dynobj, ".got.loc");
if (s == NULL
|| ! bfd_set_section_flags (dynobj, s, flags)
|| ! bfd_set_section_alignment (dynobj, s, 2))
return FALSE;
s = bfd_make_section (dynobj, ".xt.lit.plt");
if (s == NULL
|| ! bfd_set_section_flags (dynobj, s, noalloc_flags)
|| ! bfd_set_section_alignment (dynobj, s, 2))
return FALSE;
return TRUE;
}
static bfd_boolean
add_extra_plt_sections (dynobj, count)
bfd *dynobj;
int count;
{
int chunk;
for (chunk = count / PLT_ENTRIES_PER_CHUNK; chunk > 0; chunk--)
{
char *sname;
flagword flags;
asection *s;
if (elf_xtensa_get_plt_section (dynobj, chunk))
break;
flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
| SEC_LINKER_CREATED | SEC_READONLY);
sname = (char *) bfd_malloc (10);
sprintf (sname, ".plt.%u", chunk);
s = bfd_make_section (dynobj, sname);
if (s == NULL
|| ! bfd_set_section_flags (dynobj, s, flags | SEC_CODE)
|| ! bfd_set_section_alignment (dynobj, s, 2))
return FALSE;
sname = (char *) bfd_malloc (14);
sprintf (sname, ".got.plt.%u", chunk);
s = bfd_make_section (dynobj, sname);
if (s == NULL
|| ! bfd_set_section_flags (dynobj, s, flags)
|| ! bfd_set_section_alignment (dynobj, s, 2))
return FALSE;
}
return TRUE;
}
static bfd_boolean
elf_xtensa_adjust_dynamic_symbol (info, h)
struct bfd_link_info *info ATTRIBUTE_UNUSED;
struct elf_link_hash_entry *h;
{
if (h->weakdef != NULL)
{
BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
|| h->weakdef->root.type == bfd_link_hash_defweak);
h->root.u.def.section = h->weakdef->root.u.def.section;
h->root.u.def.value = h->weakdef->root.u.def.value;
return TRUE;
}
return TRUE;
}
static void
elf_xtensa_make_sym_local (info, h)
struct bfd_link_info *info;
struct elf_link_hash_entry *h;
{
if (info->shared)
{
if (h->plt.refcount > 0)
{
if (h->got.refcount < 0)
h->got.refcount = 0;
h->got.refcount += h->plt.refcount;
h->plt.refcount = 0;
}
}
else
{
h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
h->plt.refcount = 0;
h->got.refcount = 0;
}
}
static bfd_boolean
elf_xtensa_fix_refcounts (h, arg)
struct elf_link_hash_entry *h;
PTR arg;
{
struct bfd_link_info *info = (struct bfd_link_info *) arg;
if (h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
if (! xtensa_elf_dynamic_symbol_p (h, info))
elf_xtensa_make_sym_local (info, h);
if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) != 0)
info->flags |= DF_TEXTREL;
return TRUE;
}
static bfd_boolean
elf_xtensa_allocate_plt_size (h, arg)
struct elf_link_hash_entry *h;
PTR arg;
{
asection *srelplt = (asection *) arg;
if (h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
if (h->plt.refcount > 0)
srelplt->_raw_size += (h->plt.refcount * sizeof (Elf32_External_Rela));
return TRUE;
}
static bfd_boolean
elf_xtensa_allocate_got_size (h, arg)
struct elf_link_hash_entry *h;
PTR arg;
{
asection *srelgot = (asection *) arg;
if (h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
if (h->got.refcount > 0)
srelgot->_raw_size += (h->got.refcount * sizeof (Elf32_External_Rela));
return TRUE;
}
static void
elf_xtensa_allocate_local_got_size (info, srelgot)
struct bfd_link_info *info;
asection *srelgot;
{
bfd *i;
for (i = info->input_bfds; i; i = i->link_next)
{
bfd_signed_vma *local_got_refcounts;
bfd_size_type j, cnt;
Elf_Internal_Shdr *symtab_hdr;
local_got_refcounts = elf_local_got_refcounts (i);
if (!local_got_refcounts)
continue;
symtab_hdr = &elf_tdata (i)->symtab_hdr;
cnt = symtab_hdr->sh_info;
for (j = 0; j < cnt; ++j)
{
if (local_got_refcounts[j] > 0)
srelgot->_raw_size += (local_got_refcounts[j]
* sizeof (Elf32_External_Rela));
}
}
}
static bfd_boolean
elf_xtensa_size_dynamic_sections (output_bfd, info)
bfd *output_bfd ATTRIBUTE_UNUSED;
struct bfd_link_info *info;
{
bfd *dynobj, *abfd;
asection *s, *srelplt, *splt, *sgotplt, *srelgot, *spltlittbl, *sgotloc;
bfd_boolean relplt, relgot;
int plt_entries, plt_chunks, chunk;
plt_entries = 0;
plt_chunks = 0;
srelgot = 0;
dynobj = elf_hash_table (info)->dynobj;
if (dynobj == NULL)
abort ();
if (elf_hash_table (info)->dynamic_sections_created)
{
if (info->executable)
{
s = bfd_get_section_by_name (dynobj, ".interp");
if (s == NULL)
abort ();
s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
}
s = bfd_get_section_by_name (dynobj, ".got");
if (s == NULL)
abort ();
s->_raw_size = 4;
elf_link_hash_traverse (elf_hash_table (info),
elf_xtensa_fix_refcounts,
(PTR) info);
srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
if (srelgot == NULL)
abort ();
elf_link_hash_traverse (elf_hash_table (info),
elf_xtensa_allocate_got_size,
(PTR) srelgot);
if (info->shared)
elf_xtensa_allocate_local_got_size (info, srelgot);
srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
if (srelplt == NULL)
abort ();
elf_link_hash_traverse (elf_hash_table (info),
elf_xtensa_allocate_plt_size,
(PTR) srelplt);
spltlittbl = bfd_get_section_by_name (dynobj, ".xt.lit.plt");
if (spltlittbl == NULL)
abort ();
plt_entries = srelplt->_raw_size / sizeof (Elf32_External_Rela);
plt_chunks =
(plt_entries + PLT_ENTRIES_PER_CHUNK - 1) / PLT_ENTRIES_PER_CHUNK;
for (chunk = 0;
(splt = elf_xtensa_get_plt_section (dynobj, chunk)) != NULL;
chunk++)
{
int chunk_entries;
sgotplt = elf_xtensa_get_gotplt_section (dynobj, chunk);
if (sgotplt == NULL)
abort ();
if (chunk < plt_chunks - 1)
chunk_entries = PLT_ENTRIES_PER_CHUNK;
else if (chunk == plt_chunks - 1)
chunk_entries = plt_entries - (chunk * PLT_ENTRIES_PER_CHUNK);
else
chunk_entries = 0;
if (chunk_entries != 0)
{
sgotplt->_raw_size = 4 * (chunk_entries + 2);
splt->_raw_size = PLT_ENTRY_SIZE * chunk_entries;
srelgot->_raw_size += 2 * sizeof (Elf32_External_Rela);
spltlittbl->_raw_size += 8;
}
else
{
sgotplt->_raw_size = 0;
splt->_raw_size = 0;
}
}
sgotloc = bfd_get_section_by_name (dynobj, ".got.loc");
if (sgotloc == NULL)
abort ();
sgotloc->_raw_size = spltlittbl->_raw_size;
for (abfd = info->input_bfds; abfd != NULL; abfd = abfd->link_next)
{
if (abfd->flags & DYNAMIC)
continue;
for (s = abfd->sections; s != NULL; s = s->next)
{
if (! elf_discarded_section (s)
&& xtensa_is_littable_section (s)
&& s != spltlittbl)
sgotloc->_raw_size += s->_raw_size;
}
}
}
relplt = FALSE;
relgot = FALSE;
for (s = dynobj->sections; s != NULL; s = s->next)
{
const char *name;
bfd_boolean strip;
if ((s->flags & SEC_LINKER_CREATED) == 0)
continue;
name = bfd_get_section_name (dynobj, s);
strip = FALSE;
if (strncmp (name, ".rela", 5) == 0)
{
if (strcmp (name, ".rela.plt") == 0)
relplt = TRUE;
else if (strcmp (name, ".rela.got") == 0)
relgot = TRUE;
s->reloc_count = 0;
}
else if (strncmp (name, ".plt.", 5) == 0
|| strncmp (name, ".got.plt.", 9) == 0)
{
if (s->_raw_size == 0)
{
strip = TRUE;
}
}
else if (strcmp (name, ".got") != 0
&& strcmp (name, ".plt") != 0
&& strcmp (name, ".got.plt") != 0
&& strcmp (name, ".xt.lit.plt") != 0
&& strcmp (name, ".got.loc") != 0)
{
continue;
}
if (strip)
_bfd_strip_section_from_output (info, s);
else
{
s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
if (s->contents == NULL && s->_raw_size != 0)
return FALSE;
}
}
if (elf_hash_table (info)->dynamic_sections_created)
{
if (srelgot == NULL)
abort ();
for (chunk = 0; chunk < plt_chunks; chunk++)
{
Elf_Internal_Rela irela;
bfd_byte *loc;
irela.r_offset = 0;
irela.r_info = ELF32_R_INFO (0, R_XTENSA_RTLD);
irela.r_addend = 0;
loc = (srelgot->contents
+ srelgot->reloc_count * sizeof (Elf32_External_Rela));
bfd_elf32_swap_reloca_out (output_bfd, &irela, loc);
bfd_elf32_swap_reloca_out (output_bfd, &irela,
loc + sizeof (Elf32_External_Rela));
srelgot->reloc_count += 2;
}
#define add_dynamic_entry(TAG, VAL) \
bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
if (! info->shared)
{
if (!add_dynamic_entry (DT_DEBUG, 0))
return FALSE;
}
if (relplt)
{
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 (relgot)
{
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 ((info->flags & DF_TEXTREL) != 0)
{
if (!add_dynamic_entry (DT_TEXTREL, 0))
return FALSE;
}
if (!add_dynamic_entry (DT_XTENSA_GOT_LOC_OFF, 0)
|| !add_dynamic_entry (DT_XTENSA_GOT_LOC_SZ, 0))
return FALSE;
}
#undef add_dynamic_entry
return TRUE;
}
static bfd_boolean
elf_xtensa_modify_segment_map (abfd, info)
bfd *abfd;
struct bfd_link_info *info ATTRIBUTE_UNUSED;
{
struct elf_segment_map **m_p;
m_p = &elf_tdata (abfd)->segment_map;
while (*m_p != NULL)
{
if ((*m_p)->p_type == PT_LOAD && (*m_p)->count == 0)
*m_p = (*m_p)->next;
else
m_p = &(*m_p)->next;
}
return TRUE;
}
#define CALL_SEGMENT_BITS (30)
#define CALL_SEGMENT_SIZE (1<<CALL_SEGMENT_BITS)
static bfd_reloc_status_type
elf_xtensa_do_reloc (howto, abfd, input_section, relocation,
contents, address, is_weak_undef, error_message)
reloc_howto_type *howto;
bfd *abfd;
asection *input_section;
bfd_vma relocation;
bfd_byte *contents;
bfd_vma address;
bfd_boolean is_weak_undef;
char **error_message;
{
xtensa_opcode opcode;
xtensa_operand operand;
xtensa_encode_result encode_result;
xtensa_isa isa = xtensa_default_isa;
xtensa_insnbuf ibuff;
bfd_vma self_address;
int opnd;
uint32 newval;
switch (howto->type)
{
case R_XTENSA_NONE:
return bfd_reloc_ok;
case R_XTENSA_ASM_EXPAND:
if (!is_weak_undef)
{
xtensa_opcode opcode =
get_expanded_call_opcode (contents + address,
input_section->_raw_size - address);
if (is_windowed_call_opcode (opcode))
{
self_address = (input_section->output_section->vma
+ input_section->output_offset
+ address);
if ((self_address >> CALL_SEGMENT_BITS) !=
(relocation >> CALL_SEGMENT_BITS))
{
*error_message = "windowed longcall crosses 1GB boundary; "
"return may fail";
return bfd_reloc_dangerous;
}
}
}
return bfd_reloc_ok;
case R_XTENSA_ASM_SIMPLIFY:
{
bfd_reloc_status_type retval =
elf_xtensa_do_asm_simplify (contents, address,
input_section->_raw_size);
if (retval != bfd_reloc_ok)
return retval;
address += 3;
howto = &elf_howto_table[(unsigned) R_XTENSA_OP0 ];
}
break;
case R_XTENSA_32:
case R_XTENSA_PLT:
{
bfd_vma x;
x = bfd_get_32 (abfd, contents + address);
x = x + relocation;
bfd_put_32 (abfd, x, contents + address);
}
return bfd_reloc_ok;
}
ibuff = xtensa_insnbuf_alloc (isa);
xtensa_insnbuf_from_chars (isa, ibuff, contents + address);
opcode = xtensa_decode_insn (isa, ibuff);
if (opcode == XTENSA_UNDEFINED)
{
*error_message = "cannot decode instruction";
return bfd_reloc_dangerous;
}
if (howto->type < R_XTENSA_OP0 || howto->type > R_XTENSA_OP2)
{
*error_message = "unexpected relocation";
return bfd_reloc_dangerous;
}
opnd = howto->type - R_XTENSA_OP0;
if (!howto->pc_relative)
{
*error_message = "expected PC-relative relocation";
return bfd_reloc_dangerous;
}
self_address = (input_section->output_section->vma
+ input_section->output_offset
+ address);
operand = xtensa_get_operand (isa, opcode, opnd);
newval = xtensa_operand_do_reloc (operand, relocation, self_address);
encode_result = xtensa_operand_encode (operand, &newval);
xtensa_operand_set_field (operand, ibuff, newval);
xtensa_insnbuf_to_chars (isa, ibuff, contents + address);
free (ibuff);
if (encode_result != xtensa_encode_result_ok)
{
char *message = build_encoding_error_message (opcode, encode_result);
*error_message = message;
return bfd_reloc_dangerous;
}
if (is_direct_call_opcode (opcode)
&& is_windowed_call_opcode (opcode))
{
if ((self_address >> CALL_SEGMENT_BITS) !=
(relocation >> CALL_SEGMENT_BITS))
{
*error_message = "windowed call crosses 1GB boundary; "
"return may fail";
return bfd_reloc_dangerous;
}
}
return bfd_reloc_ok;
}
static char *
vsprint_msg VPARAMS ((const char *origmsg, const char *fmt, int arglen, ...))
{
static bfd_size_type alloc_size = 0;
static char *message = NULL;
bfd_size_type orig_len, len = 0;
bfd_boolean is_append;
VA_OPEN (ap, arglen);
VA_FIXEDARG (ap, const char *, origmsg);
is_append = (origmsg == message);
orig_len = strlen (origmsg);
len = orig_len + strlen (fmt) + arglen + 20;
if (len > alloc_size)
{
message = (char *) bfd_realloc (message, len);
alloc_size = len;
}
if (!is_append)
memcpy (message, origmsg, orig_len);
vsprintf (message + orig_len, fmt, ap);
VA_CLOSE (ap);
return message;
}
static char *
build_encoding_error_message (opcode, encode_result)
xtensa_opcode opcode;
xtensa_encode_result encode_result;
{
const char *opname = xtensa_opcode_name (xtensa_default_isa, opcode);
const char *msg = NULL;
switch (encode_result)
{
case xtensa_encode_result_ok:
msg = "unexpected valid encoding";
break;
case xtensa_encode_result_align:
msg = "misaligned encoding";
break;
case xtensa_encode_result_not_in_table:
msg = "encoding not in lookup table";
break;
case xtensa_encode_result_too_low:
msg = "encoding out of range: too low";
break;
case xtensa_encode_result_too_high:
msg = "encoding out of range: too high";
break;
case xtensa_encode_result_not_ok:
default:
msg = "could not encode";
break;
}
if (is_direct_call_opcode (opcode)
&& (encode_result == xtensa_encode_result_too_low
|| encode_result == xtensa_encode_result_too_high))
msg = "direct call out of range";
else if (opcode == get_l32r_opcode ())
{
if (encode_result == xtensa_encode_result_too_low)
msg = "literal out of range";
else if (encode_result == xtensa_encode_result_too_high)
msg = "literal placed after use";
}
return vsprint_msg (opname, ": %s", strlen (msg) + 2, msg);
}
static bfd_reloc_status_type
bfd_elf_xtensa_reloc (abfd, reloc_entry, symbol, data, input_section,
output_bfd, error_message)
bfd *abfd;
arelent *reloc_entry;
asymbol *symbol;
PTR data;
asection *input_section;
bfd *output_bfd;
char **error_message;
{
bfd_vma relocation;
bfd_reloc_status_type flag;
bfd_size_type octets = reloc_entry->address * bfd_octets_per_byte (abfd);
bfd_vma output_base = 0;
reloc_howto_type *howto = reloc_entry->howto;
asection *reloc_target_output_section;
bfd_boolean is_weak_undef;
if (output_bfd != (bfd *) NULL
&& (symbol->flags & BSF_SECTION_SYM) == 0)
{
reloc_entry->address += input_section->output_offset;
return bfd_reloc_ok;
}
if (reloc_entry->address > (input_section->_cooked_size
/ bfd_octets_per_byte (abfd)))
return bfd_reloc_outofrange;
if (bfd_is_com_section (symbol->section))
relocation = 0;
else
relocation = symbol->value;
reloc_target_output_section = symbol->section->output_section;
if ((output_bfd && !howto->partial_inplace)
|| reloc_target_output_section == NULL)
output_base = 0;
else
output_base = reloc_target_output_section->vma;
relocation += output_base + symbol->section->output_offset;
relocation += reloc_entry->addend;
if (output_bfd)
{
if (!howto->partial_inplace)
{
BFD_ASSERT (symbol->flags & BSF_SECTION_SYM);
reloc_entry->addend = relocation;
reloc_entry->address += input_section->output_offset;
return bfd_reloc_ok;
}
else
{
reloc_entry->address += input_section->output_offset;
reloc_entry->addend = 0;
}
}
is_weak_undef = (bfd_is_und_section (symbol->section)
&& (symbol->flags & BSF_WEAK) != 0);
flag = elf_xtensa_do_reloc (howto, abfd, input_section, relocation,
(bfd_byte *) data, (bfd_vma) octets,
is_weak_undef, error_message);
if (flag == bfd_reloc_dangerous)
{
if (! *error_message)
*error_message = "";
*error_message = vsprint_msg (*error_message, ": (%s + 0x%lx)",
strlen (symbol->name) + 17,
symbol->name, reloc_entry->addend);
}
return flag;
}
static bfd_vma
elf_xtensa_create_plt_entry (dynobj, output_bfd, reloc_index)
bfd *dynobj;
bfd *output_bfd;
unsigned reloc_index;
{
asection *splt, *sgotplt;
bfd_vma plt_base, got_base;
bfd_vma code_offset, lit_offset;
int chunk;
chunk = reloc_index / PLT_ENTRIES_PER_CHUNK;
splt = elf_xtensa_get_plt_section (dynobj, chunk);
sgotplt = elf_xtensa_get_gotplt_section (dynobj, chunk);
BFD_ASSERT (splt != NULL && sgotplt != NULL);
plt_base = splt->output_section->vma + splt->output_offset;
got_base = sgotplt->output_section->vma + sgotplt->output_offset;
lit_offset = 8 + (reloc_index % PLT_ENTRIES_PER_CHUNK) * 4;
code_offset = (reloc_index % PLT_ENTRIES_PER_CHUNK) * PLT_ENTRY_SIZE;
bfd_put_32 (output_bfd, reloc_index * sizeof (Elf32_External_Rela),
sgotplt->contents + lit_offset);
memcpy (splt->contents + code_offset,
(bfd_big_endian (output_bfd)
? elf_xtensa_be_plt_entry
: elf_xtensa_le_plt_entry),
PLT_ENTRY_SIZE);
bfd_put_16 (output_bfd, l32r_offset (got_base + 0,
plt_base + code_offset + 3),
splt->contents + code_offset + 4);
bfd_put_16 (output_bfd, l32r_offset (got_base + 4,
plt_base + code_offset + 6),
splt->contents + code_offset + 7);
bfd_put_16 (output_bfd, l32r_offset (got_base + lit_offset,
plt_base + code_offset + 9),
splt->contents + code_offset + 10);
return plt_base + code_offset;
}
static bfd_boolean
elf_xtensa_relocate_section (output_bfd, info, input_bfd,
input_section, contents, relocs,
local_syms, local_sections)
bfd *output_bfd;
struct bfd_link_info *info;
bfd *input_bfd;
asection *input_section;
bfd_byte *contents;
Elf_Internal_Rela *relocs;
Elf_Internal_Sym *local_syms;
asection **local_sections;
{
Elf_Internal_Shdr *symtab_hdr;
Elf_Internal_Rela *rel;
Elf_Internal_Rela *relend;
struct elf_link_hash_entry **sym_hashes;
asection *srelgot, *srelplt;
bfd *dynobj;
char *error_message = NULL;
if (xtensa_default_isa == NULL)
xtensa_isa_init ();
dynobj = elf_hash_table (info)->dynobj;
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (input_bfd);
srelgot = NULL;
srelplt = NULL;
if (dynobj != NULL)
{
srelgot = bfd_get_section_by_name (dynobj, ".rela.got");;
srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
}
rel = relocs;
relend = relocs + input_section->reloc_count;
for (; rel < relend; rel++)
{
int r_type;
reloc_howto_type *howto;
unsigned long r_symndx;
struct elf_link_hash_entry *h;
Elf_Internal_Sym *sym;
asection *sec;
bfd_vma relocation;
bfd_reloc_status_type r;
bfd_boolean is_weak_undef;
bfd_boolean unresolved_reloc;
bfd_boolean warned;
r_type = ELF32_R_TYPE (rel->r_info);
if (r_type == (int) R_XTENSA_GNU_VTINHERIT
|| r_type == (int) R_XTENSA_GNU_VTENTRY)
continue;
if (r_type < 0 || r_type >= (int) R_XTENSA_max)
{
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
howto = &elf_howto_table[r_type];
r_symndx = ELF32_R_SYM (rel->r_info);
if (info->relocatable)
{
if (relaxing_section)
{
do_fix_for_relocatable_link (rel, input_bfd, input_section);
r_type = ELF32_R_TYPE (rel->r_info);
}
if (r_type == R_XTENSA_ASM_SIMPLIFY)
{
contract_asm_expansion (contents, input_section->_raw_size, rel);
r_type = ELF32_R_TYPE (rel->r_info);
}
if (r_symndx < symtab_hdr->sh_info)
{
sym = local_syms + r_symndx;
if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
{
sec = local_sections[r_symndx];
rel->r_addend += sec->output_offset + sym->st_value;
}
}
if (rel->r_addend)
{
howto = &elf_howto_table[r_type];
if (howto->partial_inplace)
{
r = elf_xtensa_do_reloc (howto, input_bfd, input_section,
rel->r_addend, contents,
rel->r_offset, FALSE,
&error_message);
if (r != bfd_reloc_ok)
{
if (!((*info->callbacks->reloc_dangerous)
(info, error_message, input_bfd, input_section,
rel->r_offset)))
return FALSE;
}
rel->r_addend = 0;
}
}
continue;
}
h = NULL;
sym = NULL;
sec = NULL;
is_weak_undef = FALSE;
unresolved_reloc = FALSE;
warned = FALSE;
if (howto->partial_inplace)
{
rel->r_addend += bfd_get_32 (input_bfd, contents + rel->r_offset);
bfd_put_32 (input_bfd, 0, contents + rel->r_offset);
}
if (r_symndx < symtab_hdr->sh_info)
{
sym = local_syms + r_symndx;
sec = local_sections[r_symndx];
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
}
else
{
RELOC_FOR_GLOBAL_SYMBOL (h, sym_hashes, r_symndx,
symtab_hdr, relocation, sec,
unresolved_reloc, info,
warned);
if (relocation == 0
&& !unresolved_reloc
&& h->root.type == bfd_link_hash_undefweak)
is_weak_undef = TRUE;
}
if (relaxing_section)
{
do_fix_for_final_link (rel, input_section, &relocation);
r_type = ELF32_R_TYPE (rel->r_info);
howto = &elf_howto_table[r_type];
}
if (rel->r_offset >= input_section->_raw_size
&& ELF32_R_TYPE (rel->r_info) != R_XTENSA_NONE)
{
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
if (elf_hash_table (info)->dynamic_sections_created)
{
bfd_boolean dynamic_symbol = xtensa_elf_dynamic_symbol_p (h, info);
if (dynamic_symbol && (r_type == R_XTENSA_OP0
|| r_type == R_XTENSA_OP1
|| r_type == R_XTENSA_OP2))
{
const char *name = h->root.root.string;
error_message = vsprint_msg ("invalid relocation for dynamic "
"symbol", ": %s",
strlen (name) + 2, name);
if (!((*info->callbacks->reloc_dangerous)
(info, error_message, input_bfd, input_section,
rel->r_offset)))
return FALSE;
}
else if ((r_type == R_XTENSA_32 || r_type == R_XTENSA_PLT)
&& (input_section->flags & SEC_ALLOC) != 0
&& (dynamic_symbol || info->shared))
{
Elf_Internal_Rela outrel;
bfd_byte *loc;
asection *srel;
if (dynamic_symbol && r_type == R_XTENSA_PLT)
srel = srelplt;
else
srel = srelgot;
BFD_ASSERT (srel != NULL);
outrel.r_offset =
_bfd_elf_section_offset (output_bfd, info,
input_section, rel->r_offset);
if ((outrel.r_offset | 1) == (bfd_vma) -1)
memset (&outrel, 0, sizeof outrel);
else
{
outrel.r_offset += (input_section->output_section->vma
+ input_section->output_offset);
if (dynamic_symbol)
{
outrel.r_addend = rel->r_addend;
rel->r_addend = 0;
if (r_type == R_XTENSA_32)
{
outrel.r_info =
ELF32_R_INFO (h->dynindx, R_XTENSA_GLOB_DAT);
relocation = 0;
}
else
{
outrel.r_info =
ELF32_R_INFO (h->dynindx, R_XTENSA_JMP_SLOT);
relocation =
elf_xtensa_create_plt_entry (dynobj, output_bfd,
srel->reloc_count);
}
unresolved_reloc = FALSE;
}
else
{
outrel.r_info = ELF32_R_INFO (0, R_XTENSA_RELATIVE);
outrel.r_addend = 0;
}
}
loc = (srel->contents
+ srel->reloc_count++ * sizeof (Elf32_External_Rela));
bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
BFD_ASSERT (sizeof (Elf32_External_Rela) * srel->reloc_count
<= srel->_cooked_size);
}
}
if (unresolved_reloc
&& !((input_section->flags & SEC_DEBUGGING) != 0
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
(*_bfd_error_handler)
(_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
bfd_archive_filename (input_bfd),
bfd_get_section_name (input_bfd, input_section),
(long) rel->r_offset,
h->root.root.string);
r = elf_xtensa_do_reloc (howto, input_bfd, input_section,
relocation + rel->r_addend,
contents, rel->r_offset, is_weak_undef,
&error_message);
if (r != bfd_reloc_ok && !warned)
{
const char *name;
BFD_ASSERT (r == bfd_reloc_dangerous);
BFD_ASSERT (error_message != (char *) NULL);
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 && *name == '\0')
name = bfd_section_name (input_bfd, sec);
}
if (name)
error_message = vsprint_msg (error_message, ": %s",
strlen (name), name);
if (!((*info->callbacks->reloc_dangerous)
(info, error_message, input_bfd, input_section,
rel->r_offset)))
return FALSE;
}
}
return TRUE;
}
static bfd_boolean
elf_xtensa_finish_dynamic_symbol (output_bfd, info, h, sym)
bfd *output_bfd ATTRIBUTE_UNUSED;
struct bfd_link_info *info ATTRIBUTE_UNUSED;
struct elf_link_hash_entry *h;
Elf_Internal_Sym *sym;
{
if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
{
sym->st_shndx = SHN_UNDEF;
}
if (strcmp (h->root.root.string, "_DYNAMIC") == 0
|| strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
sym->st_shndx = SHN_ABS;
return TRUE;
}
static int
elf_xtensa_combine_prop_entries (output_bfd, sxtlit, sgotloc)
bfd *output_bfd;
asection *sxtlit;
asection *sgotloc;
{
bfd_byte *contents;
property_table_entry *table;
bfd_size_type section_size, sgotloc_size;
bfd_vma offset;
int n, m, num;
section_size = (sxtlit->_cooked_size != 0
? sxtlit->_cooked_size : sxtlit->_raw_size);
BFD_ASSERT (section_size % 8 == 0);
num = section_size / 8;
sgotloc_size = (sgotloc->_cooked_size != 0
? sgotloc->_cooked_size : sgotloc->_raw_size);
if (sgotloc_size != section_size)
{
(*_bfd_error_handler)
("internal inconsistency in size of .got.loc section");
return -1;
}
contents = (bfd_byte *) bfd_malloc (section_size);
table = (property_table_entry *)
bfd_malloc (num * sizeof (property_table_entry));
if (contents == 0 || table == 0)
return -1;
sxtlit->flags &= ~SEC_IN_MEMORY;
if (! bfd_get_section_contents (output_bfd, sxtlit, contents, 0,
section_size))
return -1;
offset = 0;
for (n = 0; n < num; n++)
{
table[n].address = bfd_get_32 (output_bfd, &contents[offset]);
table[n].size = bfd_get_32 (output_bfd, &contents[offset + 4]);
offset += 8;
}
qsort (table, num, sizeof (property_table_entry), property_table_compare);
for (n = 0; n < num; n++)
{
bfd_boolean remove = FALSE;
if (table[n].size == 0)
remove = TRUE;
else if (n > 0 &&
(table[n-1].address + table[n-1].size == table[n].address))
{
table[n-1].size += table[n].size;
remove = TRUE;
}
if (remove)
{
for (m = n; m < num - 1; m++)
{
table[m].address = table[m+1].address;
table[m].size = table[m+1].size;
}
n--;
num--;
}
}
offset = 0;
for (n = 0; n < num; n++)
{
bfd_put_32 (output_bfd, table[n].address, &contents[offset]);
bfd_put_32 (output_bfd, table[n].size, &contents[offset + 4]);
offset += 8;
}
if ((bfd_size_type) (num * 8) < section_size)
{
memset (&contents[num * 8], 0, section_size - num * 8);
sxtlit->_cooked_size = num * 8;
}
if (! bfd_set_section_contents (output_bfd, sxtlit, contents, 0,
section_size))
return -1;
memcpy (sgotloc->contents, contents, section_size);
free (contents);
free (table);
return num;
}
static bfd_boolean
elf_xtensa_finish_dynamic_sections (output_bfd, info)
bfd *output_bfd;
struct bfd_link_info *info;
{
bfd *dynobj;
asection *sdyn, *srelplt, *sgot, *sxtlit, *sgotloc;
Elf32_External_Dyn *dyncon, *dynconend;
int num_xtlit_entries;
if (! elf_hash_table (info)->dynamic_sections_created)
return TRUE;
dynobj = elf_hash_table (info)->dynobj;
sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
BFD_ASSERT (sdyn != NULL);
sgot = bfd_get_section_by_name (dynobj, ".got");
if (sgot)
{
BFD_ASSERT (sgot->_raw_size == 4);
if (sdyn == NULL)
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
else
bfd_put_32 (output_bfd,
sdyn->output_section->vma + sdyn->output_offset,
sgot->contents);
}
srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
if (srelplt != NULL && srelplt->_raw_size != 0)
{
asection *sgotplt, *srelgot, *spltlittbl;
int chunk, plt_chunks, plt_entries;
Elf_Internal_Rela irela;
bfd_byte *loc;
unsigned rtld_reloc;
srelgot = bfd_get_section_by_name (dynobj, ".rela.got");;
BFD_ASSERT (srelgot != NULL);
spltlittbl = bfd_get_section_by_name (dynobj, ".xt.lit.plt");
BFD_ASSERT (spltlittbl != NULL);
for (rtld_reloc = 0; rtld_reloc < srelgot->reloc_count; rtld_reloc++)
{
loc = srelgot->contents + rtld_reloc * sizeof (Elf32_External_Rela);
bfd_elf32_swap_reloca_in (output_bfd, loc, &irela);
if (ELF32_R_TYPE (irela.r_info) == R_XTENSA_RTLD)
break;
}
BFD_ASSERT (rtld_reloc < srelgot->reloc_count);
plt_entries = (srelplt->_raw_size / sizeof (Elf32_External_Rela));
plt_chunks =
(plt_entries + PLT_ENTRIES_PER_CHUNK - 1) / PLT_ENTRIES_PER_CHUNK;
for (chunk = 0; chunk < plt_chunks; chunk++)
{
int chunk_entries = 0;
sgotplt = elf_xtensa_get_gotplt_section (dynobj, chunk);
BFD_ASSERT (sgotplt != NULL);
loc = srelgot->contents + rtld_reloc * sizeof (Elf32_External_Rela);
bfd_elf32_swap_reloca_in (output_bfd, loc, &irela);
BFD_ASSERT (ELF32_R_TYPE (irela.r_info) == R_XTENSA_RTLD);
irela.r_offset = (sgotplt->output_section->vma
+ sgotplt->output_offset);
irela.r_addend = 1;
bfd_elf32_swap_reloca_out (output_bfd, &irela, loc);
rtld_reloc += 1;
BFD_ASSERT (rtld_reloc <= srelgot->reloc_count);
loc += sizeof (Elf32_External_Rela);
bfd_elf32_swap_reloca_in (output_bfd, loc, &irela);
BFD_ASSERT (ELF32_R_TYPE (irela.r_info) == R_XTENSA_RTLD);
irela.r_offset = (sgotplt->output_section->vma
+ sgotplt->output_offset + 4);
irela.r_addend = 2;
bfd_elf32_swap_reloca_out (output_bfd, &irela, loc);
rtld_reloc += 1;
BFD_ASSERT (rtld_reloc <= srelgot->reloc_count);
if (chunk < plt_chunks - 1)
chunk_entries = PLT_ENTRIES_PER_CHUNK;
else
chunk_entries = plt_entries - (chunk * PLT_ENTRIES_PER_CHUNK);
BFD_ASSERT ((unsigned) (chunk + 1) * 8 <= spltlittbl->_cooked_size);
bfd_put_32 (output_bfd,
sgotplt->output_section->vma + sgotplt->output_offset,
spltlittbl->contents + (chunk * 8) + 0);
bfd_put_32 (output_bfd,
8 + (chunk_entries * 4),
spltlittbl->contents + (chunk * 8) + 4);
}
if (srelgot->_cooked_size != (sizeof (Elf32_External_Rela)
* srelgot->reloc_count)
|| srelplt->_cooked_size != (sizeof (Elf32_External_Rela)
* srelplt->reloc_count))
abort ();
if (! bfd_set_section_contents (output_bfd,
spltlittbl->output_section,
spltlittbl->contents,
spltlittbl->output_offset,
spltlittbl->_raw_size))
return FALSE;
spltlittbl->flags &= ~SEC_HAS_CONTENTS;
}
BFD_ASSERT (! info->relocatable);
sxtlit = bfd_get_section_by_name (output_bfd, ".xt.lit");
sgotloc = bfd_get_section_by_name (dynobj, ".got.loc");
BFD_ASSERT (sxtlit && sgotloc);
num_xtlit_entries =
elf_xtensa_combine_prop_entries (output_bfd, sxtlit, sgotloc);
if (num_xtlit_entries < 0)
return FALSE;
dyncon = (Elf32_External_Dyn *) sdyn->contents;
dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
for (; dyncon < dynconend; dyncon++)
{
Elf_Internal_Dyn dyn;
const char *name;
asection *s;
bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
switch (dyn.d_tag)
{
default:
break;
case DT_XTENSA_GOT_LOC_SZ:
dyn.d_un.d_val = num_xtlit_entries;
break;
case DT_XTENSA_GOT_LOC_OFF:
name = ".got.loc";
goto get_vma;
case DT_PLTGOT:
name = ".got";
goto get_vma;
case DT_JMPREL:
name = ".rela.plt";
get_vma:
s = bfd_get_section_by_name (output_bfd, name);
BFD_ASSERT (s);
dyn.d_un.d_ptr = s->vma;
break;
case DT_PLTRELSZ:
s = bfd_get_section_by_name (output_bfd, ".rela.plt");
BFD_ASSERT (s);
dyn.d_un.d_val = (s->_cooked_size ? s->_cooked_size : s->_raw_size);
break;
case DT_RELASZ:
s = bfd_get_section_by_name (output_bfd, ".rela.plt");
if (s)
{
dyn.d_un.d_val -=
(s->_cooked_size ? s->_cooked_size : s->_raw_size);
}
break;
}
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
}
return TRUE;
}
static bfd_boolean
elf_xtensa_merge_private_bfd_data (ibfd, obfd)
bfd *ibfd;
bfd *obfd;
{
unsigned out_mach, in_mach;
flagword out_flag, in_flag;
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 FALSE;
out_flag = elf_elfheader (obfd)->e_flags;
in_flag = elf_elfheader (ibfd)->e_flags;
out_mach = out_flag & EF_XTENSA_MACH;
in_mach = in_flag & EF_XTENSA_MACH;
if (out_mach != in_mach)
{
(*_bfd_error_handler)
("%s: incompatible machine type. Output is 0x%x. Input is 0x%x",
bfd_archive_filename (ibfd), out_mach, in_mach);
bfd_set_error (bfd_error_wrong_format);
return FALSE;
}
if (! elf_flags_init (obfd))
{
elf_flags_init (obfd) = TRUE;
elf_elfheader (obfd)->e_flags = in_flag;
if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
&& bfd_get_arch_info (obfd)->the_default)
return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
bfd_get_mach (ibfd));
return TRUE;
}
if ((out_flag & EF_XTENSA_XT_INSN) !=
(in_flag & EF_XTENSA_XT_INSN))
elf_elfheader(obfd)->e_flags &= (~ EF_XTENSA_XT_INSN);
if ((out_flag & EF_XTENSA_XT_LIT) !=
(in_flag & EF_XTENSA_XT_LIT))
elf_elfheader(obfd)->e_flags &= (~ EF_XTENSA_XT_LIT);
return TRUE;
}
static bfd_boolean
elf_xtensa_set_private_flags (abfd, flags)
bfd *abfd;
flagword flags;
{
BFD_ASSERT (!elf_flags_init (abfd)
|| elf_elfheader (abfd)->e_flags == flags);
elf_elfheader (abfd)->e_flags |= flags;
elf_flags_init (abfd) = TRUE;
return TRUE;
}
extern flagword
elf_xtensa_get_private_bfd_flags (abfd)
bfd *abfd;
{
return elf_elfheader (abfd)->e_flags;
}
static bfd_boolean
elf_xtensa_print_private_bfd_data (abfd, farg)
bfd *abfd;
PTR farg;
{
FILE *f = (FILE *) farg;
flagword e_flags = elf_elfheader (abfd)->e_flags;
fprintf (f, "\nXtensa header:\n");
if ((e_flags & EF_XTENSA_MACH) == E_XTENSA_MACH)
fprintf (f, "\nMachine = Base\n");
else
fprintf (f, "\nMachine Id = 0x%x\n", e_flags & EF_XTENSA_MACH);
fprintf (f, "Insn tables = %s\n",
(e_flags & EF_XTENSA_XT_INSN) ? "true" : "false");
fprintf (f, "Literal tables = %s\n",
(e_flags & EF_XTENSA_XT_LIT) ? "true" : "false");
return _bfd_elf_print_private_bfd_data (abfd, farg);
}
static bfd_boolean
elf_xtensa_object_p (abfd)
bfd *abfd;
{
int mach;
unsigned long arch = elf_elfheader (abfd)->e_flags & EF_XTENSA_MACH;
switch (arch)
{
case E_XTENSA_MACH:
mach = bfd_mach_xtensa;
break;
default:
return FALSE;
}
(void) bfd_default_set_arch_mach (abfd, bfd_arch_xtensa, mach);
return TRUE;
}
static void
elf_xtensa_final_write_processing (abfd, linker)
bfd *abfd;
bfd_boolean linker ATTRIBUTE_UNUSED;
{
int mach;
unsigned long val;
switch (mach = bfd_get_mach (abfd))
{
case bfd_mach_xtensa:
val = E_XTENSA_MACH;
break;
default:
return;
}
elf_elfheader (abfd)->e_flags &= (~ EF_XTENSA_MACH);
elf_elfheader (abfd)->e_flags |= val;
}
static enum elf_reloc_type_class
elf_xtensa_reloc_type_class (rela)
const Elf_Internal_Rela *rela;
{
switch ((int) ELF32_R_TYPE (rela->r_info))
{
case R_XTENSA_RELATIVE:
return reloc_class_relative;
case R_XTENSA_JMP_SLOT:
return reloc_class_plt;
default:
return reloc_class_normal;
}
}
static bfd_boolean
elf_xtensa_discard_info_for_section (abfd, cookie, info, sec)
bfd *abfd;
struct elf_reloc_cookie *cookie;
struct bfd_link_info *info;
asection *sec;
{
bfd_byte *contents;
bfd_vma section_size;
bfd_vma offset, actual_offset;
size_t removed_bytes = 0;
section_size = (sec->_cooked_size ? sec->_cooked_size : sec->_raw_size);
if (section_size == 0 || section_size % 8 != 0)
return FALSE;
if (sec->output_section
&& bfd_is_abs_section (sec->output_section))
return FALSE;
contents = retrieve_contents (abfd, sec, info->keep_memory);
if (!contents)
return FALSE;
cookie->rels = retrieve_internal_relocs (abfd, sec, info->keep_memory);
if (!cookie->rels)
{
release_contents (sec, contents);
return FALSE;
}
cookie->rel = cookie->rels;
cookie->relend = cookie->rels + sec->reloc_count;
for (offset = 0; offset < section_size; offset += 8)
{
actual_offset = offset - removed_bytes;
while (cookie->rel < cookie->relend
&& cookie->rel->r_offset < offset)
{
cookie->rel->r_offset -= removed_bytes;
cookie->rel++;
}
while (cookie->rel < cookie->relend
&& cookie->rel->r_offset == offset)
{
if (_bfd_elf32_reloc_symbol_deleted_p (offset, cookie))
{
if (ELF32_R_TYPE (cookie->rel->r_info) != R_XTENSA_NONE)
{
if (offset + 8 < section_size)
memmove (&contents[actual_offset],
&contents[actual_offset+8],
section_size - offset - 8);
removed_bytes += 8;
}
cookie->rel->r_info = ELF32_R_INFO (0, R_XTENSA_NONE);
}
if (cookie->rel->r_offset >= removed_bytes)
cookie->rel->r_offset -= removed_bytes;
else
cookie->rel->r_offset = 0;
cookie->rel++;
}
}
if (removed_bytes != 0)
{
for (; cookie->rel < cookie->relend; cookie->rel++)
{
if (cookie->rel->r_offset >= removed_bytes)
cookie->rel->r_offset -= removed_bytes;
else
cookie->rel->r_offset = 0;
}
memset (&contents[section_size - removed_bytes], 0, removed_bytes);
pin_contents (sec, contents);
pin_internal_relocs (sec, cookie->rels);
sec->_cooked_size = section_size - removed_bytes;
sec->_raw_size = sec->_cooked_size;
if (xtensa_is_littable_section (sec))
{
bfd *dynobj = elf_hash_table (info)->dynobj;
if (dynobj)
{
asection *sgotloc =
bfd_get_section_by_name (dynobj, ".got.loc");
if (sgotloc)
{
bfd_size_type sgotloc_size =
(sgotloc->_cooked_size ? sgotloc->_cooked_size
: sgotloc->_raw_size);
sgotloc->_cooked_size = sgotloc_size - removed_bytes;
sgotloc->_raw_size = sgotloc_size - removed_bytes;
}
}
}
}
else
{
release_contents (sec, contents);
release_internal_relocs (sec, cookie->rels);
}
return (removed_bytes != 0);
}
static bfd_boolean
elf_xtensa_discard_info (abfd, cookie, info)
bfd *abfd;
struct elf_reloc_cookie *cookie;
struct bfd_link_info *info;
{
asection *sec;
bfd_boolean changed = FALSE;
for (sec = abfd->sections; sec != NULL; sec = sec->next)
{
if (xtensa_is_property_section (sec))
{
if (elf_xtensa_discard_info_for_section (abfd, cookie, info, sec))
changed = TRUE;
}
}
return changed;
}
static bfd_boolean
elf_xtensa_ignore_discarded_relocs (sec)
asection *sec;
{
return xtensa_is_property_section (sec);
}
static bfd_boolean
elf_xtensa_grok_prstatus (abfd, note)
bfd *abfd;
Elf_Internal_Note *note;
{
int offset;
unsigned int raw_size;
elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
offset = 72;
raw_size = note->descsz - offset - 4;
return _bfd_elfcore_make_pseudosection (abfd, ".reg",
raw_size, note->descpos + offset);
}
static bfd_boolean
elf_xtensa_grok_psinfo (abfd, note)
bfd *abfd;
Elf_Internal_Note *note;
{
switch (note->descsz)
{
default:
return FALSE;
case 128:
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);
}
{
char *command = elf_tdata (abfd)->core_command;
int n = strlen (command);
if (0 < n && command[n - 1] == ' ')
command[n - 1] = '\0';
}
return TRUE;
}
static xtensa_opcode callx0_op = XTENSA_UNDEFINED;
static xtensa_opcode callx4_op = XTENSA_UNDEFINED;
static xtensa_opcode callx8_op = XTENSA_UNDEFINED;
static xtensa_opcode callx12_op = XTENSA_UNDEFINED;
static xtensa_opcode call0_op = XTENSA_UNDEFINED;
static xtensa_opcode call4_op = XTENSA_UNDEFINED;
static xtensa_opcode call8_op = XTENSA_UNDEFINED;
static xtensa_opcode call12_op = XTENSA_UNDEFINED;
static void
init_call_opcodes ()
{
if (callx0_op == XTENSA_UNDEFINED)
{
callx0_op = xtensa_opcode_lookup (xtensa_default_isa, "callx0");
callx4_op = xtensa_opcode_lookup (xtensa_default_isa, "callx4");
callx8_op = xtensa_opcode_lookup (xtensa_default_isa, "callx8");
callx12_op = xtensa_opcode_lookup (xtensa_default_isa, "callx12");
call0_op = xtensa_opcode_lookup (xtensa_default_isa, "call0");
call4_op = xtensa_opcode_lookup (xtensa_default_isa, "call4");
call8_op = xtensa_opcode_lookup (xtensa_default_isa, "call8");
call12_op = xtensa_opcode_lookup (xtensa_default_isa, "call12");
}
}
static bfd_boolean
is_indirect_call_opcode (opcode)
xtensa_opcode opcode;
{
init_call_opcodes ();
return (opcode == callx0_op
|| opcode == callx4_op
|| opcode == callx8_op
|| opcode == callx12_op);
}
static bfd_boolean
is_direct_call_opcode (opcode)
xtensa_opcode opcode;
{
init_call_opcodes ();
return (opcode == call0_op
|| opcode == call4_op
|| opcode == call8_op
|| opcode == call12_op);
}
static bfd_boolean
is_windowed_call_opcode (opcode)
xtensa_opcode opcode;
{
init_call_opcodes ();
return (opcode == call4_op
|| opcode == call8_op
|| opcode == call12_op
|| opcode == callx4_op
|| opcode == callx8_op
|| opcode == callx12_op);
}
static xtensa_opcode
get_l32r_opcode (void)
{
static xtensa_opcode l32r_opcode = XTENSA_UNDEFINED;
if (l32r_opcode == XTENSA_UNDEFINED)
{
l32r_opcode = xtensa_opcode_lookup (xtensa_default_isa, "l32r");
BFD_ASSERT (l32r_opcode != XTENSA_UNDEFINED);
}
return l32r_opcode;
}
static bfd_vma
l32r_offset (addr, pc)
bfd_vma addr;
bfd_vma pc;
{
bfd_vma offset;
offset = addr - ((pc+3) & -4);
BFD_ASSERT ((offset & ((1 << 2) - 1)) == 0);
offset = (signed int) offset >> 2;
BFD_ASSERT ((signed int) offset >> 16 == -1);
return offset;
}
static int
get_relocation_opnd (irel)
Elf_Internal_Rela *irel;
{
if (ELF32_R_TYPE (irel->r_info) < R_XTENSA_OP0
|| ELF32_R_TYPE (irel->r_info) >= R_XTENSA_max)
return -1;
return ELF32_R_TYPE (irel->r_info) - R_XTENSA_OP0;
}
static xtensa_opcode
get_relocation_opcode (sec, contents, irel)
asection *sec;
bfd_byte *contents;
Elf_Internal_Rela *irel;
{
static xtensa_insnbuf ibuff = NULL;
xtensa_isa isa = xtensa_default_isa;
if (get_relocation_opnd (irel) == -1)
return XTENSA_UNDEFINED;
if (contents == NULL)
return XTENSA_UNDEFINED;
if (sec->_raw_size <= irel->r_offset)
return XTENSA_UNDEFINED;
if (ibuff == NULL)
ibuff = xtensa_insnbuf_alloc (isa);
xtensa_insnbuf_from_chars (isa, ibuff, &contents[irel->r_offset]);
return xtensa_decode_insn (isa, ibuff);
}
bfd_boolean
is_l32r_relocation (sec, contents, irel)
asection *sec;
bfd_byte *contents;
Elf_Internal_Rela *irel;
{
xtensa_opcode opcode;
if (ELF32_R_TYPE (irel->r_info) != R_XTENSA_OP1)
return FALSE;
opcode = get_relocation_opcode (sec, contents, irel);
return (opcode == get_l32r_opcode ());
}
static bfd_reloc_status_type
elf_xtensa_do_asm_simplify (contents, address, content_length)
bfd_byte *contents;
bfd_vma address;
bfd_vma content_length;
{
static xtensa_insnbuf insnbuf = NULL;
xtensa_opcode opcode;
xtensa_operand operand;
xtensa_opcode direct_call_opcode;
xtensa_isa isa = xtensa_default_isa;
bfd_byte *chbuf = contents + address;
int opn;
if (insnbuf == NULL)
insnbuf = xtensa_insnbuf_alloc (isa);
if (content_length < address)
{
(*_bfd_error_handler)
("Attempt to convert L32R/CALLX to CALL failed");
return bfd_reloc_other;
}
opcode = get_expanded_call_opcode (chbuf, content_length - address);
direct_call_opcode = swap_callx_for_call_opcode (opcode);
if (direct_call_opcode == XTENSA_UNDEFINED)
{
(*_bfd_error_handler)
("Attempt to convert L32R/CALLX to CALL failed");
return bfd_reloc_other;
}
opcode = xtensa_opcode_lookup (isa, "or");
xtensa_encode_insn (isa, opcode, insnbuf);
for (opn = 0; opn < 3; opn++)
{
operand = xtensa_get_operand (isa, opcode, opn);
xtensa_operand_set_field (operand, insnbuf, 1);
}
xtensa_insnbuf_to_chars (isa, insnbuf, chbuf);
xtensa_encode_insn (isa, direct_call_opcode, insnbuf);
operand = xtensa_get_operand (isa, opcode, 0);
xtensa_operand_set_field (operand, insnbuf, 0);
xtensa_insnbuf_to_chars (isa, insnbuf, chbuf + 3);
return bfd_reloc_ok;
}
static bfd_reloc_status_type
contract_asm_expansion (contents, content_length, irel)
bfd_byte *contents;
bfd_vma content_length;
Elf_Internal_Rela *irel;
{
bfd_reloc_status_type retval =
elf_xtensa_do_asm_simplify (contents, irel->r_offset, content_length);
if (retval != bfd_reloc_ok)
return retval;
irel->r_offset += 3;
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_XTENSA_OP0);
return bfd_reloc_ok;
}
static xtensa_opcode
swap_callx_for_call_opcode (opcode)
xtensa_opcode opcode;
{
init_call_opcodes ();
if (opcode == callx0_op) return call0_op;
if (opcode == callx4_op) return call4_op;
if (opcode == callx8_op) return call8_op;
if (opcode == callx12_op) return call12_op;
return XTENSA_UNDEFINED;
}
#define L32R_TARGET_REG_OPERAND 0
#define CALLN_SOURCE_OPERAND 0
static xtensa_opcode
get_expanded_call_opcode (buf, bufsize)
bfd_byte *buf;
int bufsize;
{
static xtensa_insnbuf insnbuf = NULL;
xtensa_opcode opcode;
xtensa_operand operand;
xtensa_isa isa = xtensa_default_isa;
uint32 regno, call_regno;
if (bufsize < 6)
return XTENSA_UNDEFINED;
if (insnbuf == NULL)
insnbuf = xtensa_insnbuf_alloc (isa);
xtensa_insnbuf_from_chars (isa, insnbuf, buf);
opcode = xtensa_decode_insn (isa, insnbuf);
if (opcode != get_l32r_opcode ())
return XTENSA_UNDEFINED;
operand = xtensa_get_operand (isa, opcode, L32R_TARGET_REG_OPERAND);
regno = xtensa_operand_decode
(operand, xtensa_operand_get_field (operand, insnbuf));
xtensa_insnbuf_from_chars (isa, insnbuf,
buf + xtensa_insn_length (isa, opcode));
opcode = xtensa_decode_insn (isa, insnbuf);
if (!is_indirect_call_opcode (opcode))
return XTENSA_UNDEFINED;
operand = xtensa_get_operand (isa, opcode, CALLN_SOURCE_OPERAND);
call_regno = xtensa_operand_decode
(operand, xtensa_operand_get_field (operand, insnbuf));
if (call_regno != regno)
return XTENSA_UNDEFINED;
return opcode;
}
typedef struct r_reloc_struct r_reloc;
struct r_reloc_struct
{
bfd *abfd;
Elf_Internal_Rela rela;
bfd_vma target_offset;
};
static bfd_boolean r_reloc_is_const
PARAMS ((const r_reloc *));
static void r_reloc_init
PARAMS ((r_reloc *, bfd *, Elf_Internal_Rela *));
static bfd_vma r_reloc_get_target_offset
PARAMS ((const r_reloc *));
static asection *r_reloc_get_section
PARAMS ((const r_reloc *));
static bfd_boolean r_reloc_is_defined
PARAMS ((const r_reloc *));
static struct elf_link_hash_entry *r_reloc_get_hash_entry
PARAMS ((const r_reloc *));
static bfd_boolean
r_reloc_is_const (r_rel)
const r_reloc *r_rel;
{
return (r_rel->abfd == NULL);
}
static void
r_reloc_init (r_rel, abfd, irel)
r_reloc *r_rel;
bfd *abfd;
Elf_Internal_Rela *irel;
{
if (irel != NULL)
{
r_rel->rela = *irel;
r_rel->abfd = abfd;
r_rel->target_offset = r_reloc_get_target_offset (r_rel);
}
else
memset (r_rel, 0, sizeof (r_reloc));
}
static bfd_vma
r_reloc_get_target_offset (r_rel)
const r_reloc *r_rel;
{
bfd_vma target_offset;
unsigned long r_symndx;
BFD_ASSERT (!r_reloc_is_const (r_rel));
r_symndx = ELF32_R_SYM (r_rel->rela.r_info);
target_offset = get_elf_r_symndx_offset (r_rel->abfd, r_symndx);
return (target_offset + r_rel->rela.r_addend);
}
static struct elf_link_hash_entry *
r_reloc_get_hash_entry (r_rel)
const r_reloc *r_rel;
{
unsigned long r_symndx = ELF32_R_SYM (r_rel->rela.r_info);
return get_elf_r_symndx_hash_entry (r_rel->abfd, r_symndx);
}
static asection *
r_reloc_get_section (r_rel)
const r_reloc *r_rel;
{
unsigned long r_symndx = ELF32_R_SYM (r_rel->rela.r_info);
return get_elf_r_symndx_section (r_rel->abfd, r_symndx);
}
static bfd_boolean
r_reloc_is_defined (r_rel)
const r_reloc *r_rel;
{
asection *sec = r_reloc_get_section (r_rel);
if (sec == bfd_abs_section_ptr
|| sec == bfd_com_section_ptr
|| sec == bfd_und_section_ptr)
return FALSE;
return TRUE;
}
typedef struct source_reloc_struct source_reloc;
struct source_reloc_struct
{
asection *source_sec;
r_reloc r_rel;
xtensa_operand opnd;
bfd_boolean is_null;
};
static void init_source_reloc
PARAMS ((source_reloc *, asection *, const r_reloc *, xtensa_operand));
static source_reloc *find_source_reloc
PARAMS ((source_reloc *, int, asection *, Elf_Internal_Rela *));
static int source_reloc_compare
PARAMS ((const PTR, const PTR));
static void
init_source_reloc (reloc, source_sec, r_rel, opnd)
source_reloc *reloc;
asection *source_sec;
const r_reloc *r_rel;
xtensa_operand opnd;
{
reloc->source_sec = source_sec;
reloc->r_rel = *r_rel;
reloc->opnd = opnd;
reloc->is_null = FALSE;
}
static source_reloc *
find_source_reloc (src_relocs, src_count, sec, irel)
source_reloc *src_relocs;
int src_count;
asection *sec;
Elf_Internal_Rela *irel;
{
int i;
for (i = 0; i < src_count; i++)
{
if (src_relocs[i].source_sec == sec
&& src_relocs[i].r_rel.rela.r_offset == irel->r_offset
&& (ELF32_R_TYPE (src_relocs[i].r_rel.rela.r_info)
== ELF32_R_TYPE (irel->r_info)))
return &src_relocs[i];
}
return NULL;
}
static int
source_reloc_compare (ap, bp)
const PTR ap;
const PTR bp;
{
const source_reloc *a = (const source_reloc *) ap;
const source_reloc *b = (const source_reloc *) bp;
return (a->r_rel.target_offset - b->r_rel.target_offset);
}
typedef struct literal_value_struct literal_value;
typedef struct value_map_struct value_map;
typedef struct value_map_hash_table_struct value_map_hash_table;
struct literal_value_struct
{
r_reloc r_rel;
unsigned long value;
};
struct value_map_struct
{
literal_value val;
r_reloc loc;
value_map *next;
};
struct value_map_hash_table_struct
{
unsigned bucket_count;
value_map **buckets;
unsigned count;
};
static bfd_boolean is_same_value
PARAMS ((const literal_value *, const literal_value *));
static value_map_hash_table *value_map_hash_table_init
PARAMS ((void));
static unsigned hash_literal_value
PARAMS ((const literal_value *));
static unsigned hash_bfd_vma
PARAMS ((bfd_vma));
static value_map *get_cached_value
PARAMS ((value_map_hash_table *, const literal_value *));
static value_map *add_value_map
PARAMS ((value_map_hash_table *, const literal_value *, const r_reloc *));
static bfd_boolean
is_same_value (src1, src2)
const literal_value *src1;
const literal_value *src2;
{
if (r_reloc_is_const (&src1->r_rel) != r_reloc_is_const (&src2->r_rel))
return FALSE;
if (r_reloc_is_const (&src1->r_rel))
return (src1->value == src2->value);
if (ELF32_R_TYPE (src1->r_rel.rela.r_info)
!= ELF32_R_TYPE (src2->r_rel.rela.r_info))
return FALSE;
if (r_reloc_get_target_offset (&src1->r_rel)
!= r_reloc_get_target_offset (&src2->r_rel))
return FALSE;
if (src1->value != src2->value)
return FALSE;
if (r_reloc_is_defined (&src1->r_rel))
{
if (r_reloc_get_section (&src1->r_rel)
!= r_reloc_get_section (&src2->r_rel))
return FALSE;
}
else
{
if (r_reloc_get_hash_entry (&src1->r_rel)
!= r_reloc_get_hash_entry (&src2->r_rel))
return FALSE;
if (r_reloc_get_hash_entry (&src1->r_rel) == 0)
return FALSE;
}
return TRUE;
}
#define INITIAL_HASH_RELOC_BUCKET_COUNT 1024
static value_map_hash_table *
value_map_hash_table_init ()
{
value_map_hash_table *values;
values = (value_map_hash_table *)
bfd_malloc (sizeof (value_map_hash_table));
values->bucket_count = INITIAL_HASH_RELOC_BUCKET_COUNT;
values->count = 0;
values->buckets = (value_map **)
bfd_zmalloc (sizeof (value_map *) * values->bucket_count);
return values;
}
static unsigned
hash_bfd_vma (val)
bfd_vma val;
{
return (val >> 2) + (val >> 10);
}
static unsigned
hash_literal_value (src)
const literal_value *src;
{
unsigned hash_val;
if (r_reloc_is_const (&src->r_rel))
return hash_bfd_vma (src->value);
hash_val = (hash_bfd_vma (r_reloc_get_target_offset (&src->r_rel))
+ hash_bfd_vma (src->value));
if (r_reloc_is_defined (&src->r_rel))
hash_val += hash_bfd_vma ((bfd_vma) (unsigned) r_reloc_get_section (&src->r_rel));
else
hash_val += hash_bfd_vma ((bfd_vma) (unsigned) r_reloc_get_hash_entry (&src->r_rel));
return hash_val;
}
static value_map *
get_cached_value (map, val)
value_map_hash_table *map;
const literal_value *val;
{
value_map *map_e;
value_map *bucket;
unsigned idx;
idx = hash_literal_value (val);
idx = idx & (map->bucket_count - 1);
bucket = map->buckets[idx];
for (map_e = bucket; map_e; map_e = map_e->next)
{
if (is_same_value (&map_e->val, val))
return map_e;
}
return NULL;
}
static value_map *
add_value_map (map, val, loc)
value_map_hash_table *map;
const literal_value *val;
const r_reloc *loc;
{
value_map **bucket_p;
unsigned idx;
value_map *val_e = (value_map *) bfd_zmalloc (sizeof (value_map));
BFD_ASSERT (get_cached_value (map, val) == NULL);
val_e->val = *val;
val_e->loc = *loc;
idx = hash_literal_value (val);
idx = idx & (map->bucket_count - 1);
bucket_p = &map->buckets[idx];
val_e->next = *bucket_p;
*bucket_p = val_e;
map->count++;
return val_e;
}
typedef struct removed_literal_struct removed_literal;
typedef struct removed_literal_list_struct removed_literal_list;
struct removed_literal_struct
{
r_reloc from;
r_reloc to;
removed_literal *next;
};
struct removed_literal_list_struct
{
removed_literal *head;
removed_literal *tail;
};
static void add_removed_literal
PARAMS ((removed_literal_list *, const r_reloc *, const r_reloc *));
static removed_literal *find_removed_literal
PARAMS ((removed_literal_list *, bfd_vma));
static bfd_vma offset_with_removed_literals
PARAMS ((removed_literal_list *, bfd_vma));
static void
add_removed_literal (removed_list, from, to)
removed_literal_list *removed_list;
const r_reloc *from;
const r_reloc *to;
{
removed_literal *r, *new_r, *next_r;
new_r = (removed_literal *) bfd_zmalloc (sizeof (removed_literal));
new_r->from = *from;
if (to)
new_r->to = *to;
else
new_r->to.abfd = NULL;
new_r->next = NULL;
r = removed_list->head;
if (r == NULL)
{
removed_list->head = new_r;
removed_list->tail = new_r;
}
else if (removed_list->tail->from.target_offset < from->target_offset)
{
removed_list->tail->next = new_r;
removed_list->tail = new_r;
}
else
{
while (r->from.target_offset < from->target_offset
&& r->next != NULL)
{
r = r->next;
}
next_r = r->next;
r->next = new_r;
new_r->next = next_r;
if (next_r == NULL)
removed_list->tail = new_r;
}
}
static removed_literal *
find_removed_literal (removed_list, addr)
removed_literal_list *removed_list;
bfd_vma addr;
{
removed_literal *r = removed_list->head;
while (r && r->from.target_offset < addr)
r = r->next;
if (r && r->from.target_offset == addr)
return r;
return NULL;
}
static bfd_vma
offset_with_removed_literals (removed_list, addr)
removed_literal_list *removed_list;
bfd_vma addr;
{
removed_literal *r = removed_list->head;
unsigned num_bytes = 0;
if (r == NULL)
return addr;
while (r && r->from.target_offset <= addr)
{
num_bytes += 4;
r = r->next;
}
if (num_bytes > addr)
return 0;
return (addr - num_bytes);
}
typedef struct reloc_bfd_fix_struct reloc_bfd_fix;
struct reloc_bfd_fix_struct
{
asection *src_sec;
bfd_vma src_offset;
unsigned src_type;
bfd *target_abfd;
asection *target_sec;
bfd_vma target_offset;
reloc_bfd_fix *next;
};
static reloc_bfd_fix *reloc_bfd_fix_init
PARAMS ((asection *, bfd_vma, unsigned, bfd *, asection *, bfd_vma));
static reloc_bfd_fix *get_bfd_fix
PARAMS ((reloc_bfd_fix *, asection *, bfd_vma, unsigned));
static reloc_bfd_fix *
reloc_bfd_fix_init (src_sec, src_offset, src_type,
target_abfd, target_sec, target_offset)
asection *src_sec;
bfd_vma src_offset;
unsigned src_type;
bfd *target_abfd;
asection *target_sec;
bfd_vma target_offset;
{
reloc_bfd_fix *fix;
fix = (reloc_bfd_fix *) bfd_malloc (sizeof (reloc_bfd_fix));
fix->src_sec = src_sec;
fix->src_offset = src_offset;
fix->src_type = src_type;
fix->target_abfd = target_abfd;
fix->target_sec = target_sec;
fix->target_offset = target_offset;
return fix;
}
static reloc_bfd_fix *
get_bfd_fix (fix_list, sec, offset, type)
reloc_bfd_fix *fix_list;
asection *sec;
bfd_vma offset;
unsigned type;
{
reloc_bfd_fix *r;
for (r = fix_list; r != NULL; r = r->next)
{
if (r->src_sec == sec
&& r->src_offset == offset
&& r->src_type == type)
return r;
}
return NULL;
}
struct xtensa_relax_info_struct
{
bfd_boolean is_relaxable_literal_section;
int visited;
source_reloc *src_relocs;
int src_count;
int src_next;
removed_literal_list removed_list;
reloc_bfd_fix *fix_list;
};
struct elf_xtensa_section_data
{
struct bfd_elf_section_data elf;
xtensa_relax_info relax_info;
};
static void init_xtensa_relax_info
PARAMS ((asection *));
static xtensa_relax_info *get_xtensa_relax_info
PARAMS ((asection *));
static void add_fix
PARAMS ((asection *, reloc_bfd_fix *));
static bfd_boolean
elf_xtensa_new_section_hook (abfd, sec)
bfd *abfd;
asection *sec;
{
struct elf_xtensa_section_data *sdata;
bfd_size_type amt = sizeof (*sdata);
sdata = (struct elf_xtensa_section_data *) bfd_zalloc (abfd, amt);
if (sdata == NULL)
return FALSE;
sec->used_by_bfd = (PTR) sdata;
return _bfd_elf_new_section_hook (abfd, sec);
}
static void
init_xtensa_relax_info (sec)
asection *sec;
{
xtensa_relax_info *relax_info = get_xtensa_relax_info (sec);
relax_info->is_relaxable_literal_section = FALSE;
relax_info->visited = 0;
relax_info->src_relocs = NULL;
relax_info->src_count = 0;
relax_info->src_next = 0;
relax_info->removed_list.head = NULL;
relax_info->removed_list.tail = NULL;
relax_info->fix_list = NULL;
}
static xtensa_relax_info *
get_xtensa_relax_info (sec)
asection *sec;
{
struct elf_xtensa_section_data *section_data;
if (!sec || sec == sec->output_section)
return NULL;
section_data = (struct elf_xtensa_section_data *) elf_section_data (sec);
return §ion_data->relax_info;
}
static void
add_fix (src_sec, fix)
asection *src_sec;
reloc_bfd_fix *fix;
{
xtensa_relax_info *relax_info;
relax_info = get_xtensa_relax_info (src_sec);
fix->next = relax_info->fix_list;
relax_info->fix_list = fix;
}
static Elf_Internal_Rela *
retrieve_internal_relocs (abfd, sec, keep_memory)
bfd *abfd;
asection *sec;
bfd_boolean keep_memory;
{
Elf_Internal_Rela *internal_relocs;
if ((sec->flags & SEC_LINKER_CREATED) != 0)
return NULL;
internal_relocs = elf_section_data (sec)->relocs;
if (internal_relocs == NULL)
internal_relocs = (_bfd_elf_link_read_relocs
(abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
keep_memory));
return internal_relocs;
}
static void
pin_internal_relocs (sec, internal_relocs)
asection *sec;
Elf_Internal_Rela *internal_relocs;
{
elf_section_data (sec)->relocs = internal_relocs;
}
static void
release_internal_relocs (sec, internal_relocs)
asection *sec;
Elf_Internal_Rela *internal_relocs;
{
if (internal_relocs
&& elf_section_data (sec)->relocs != internal_relocs)
free (internal_relocs);
}
static bfd_byte *
retrieve_contents (abfd, sec, keep_memory)
bfd *abfd;
asection *sec;
bfd_boolean keep_memory;
{
bfd_byte *contents;
contents = elf_section_data (sec)->this_hdr.contents;
if (contents == NULL && sec->_raw_size != 0)
{
contents = (bfd_byte *) bfd_malloc (sec->_raw_size);
if (contents != NULL)
{
if (! bfd_get_section_contents (abfd, sec, contents,
(file_ptr) 0, sec->_raw_size))
{
free (contents);
return NULL;
}
if (keep_memory)
elf_section_data (sec)->this_hdr.contents = contents;
}
}
return contents;
}
static void
pin_contents (sec, contents)
asection *sec;
bfd_byte *contents;
{
elf_section_data (sec)->this_hdr.contents = contents;
}
static void
release_contents (sec, contents)
asection *sec;
bfd_byte *contents;
{
if (contents &&
elf_section_data (sec)->this_hdr.contents != contents)
free (contents);
}
static Elf_Internal_Sym *
retrieve_local_syms (input_bfd)
bfd *input_bfd;
{
Elf_Internal_Shdr *symtab_hdr;
Elf_Internal_Sym *isymbuf;
size_t locsymcount;
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
locsymcount = symtab_hdr->sh_info;
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
if (isymbuf == NULL && locsymcount != 0)
isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, locsymcount, 0,
NULL, NULL, NULL);
if (isymbuf && isymbuf != (Elf_Internal_Sym *) symtab_hdr->contents)
symtab_hdr->contents = (unsigned char *) isymbuf;
return isymbuf;
}
static bfd_boolean analyze_relocations
PARAMS ((struct bfd_link_info *));
static bfd_boolean find_relaxable_sections
PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *));
static bfd_boolean collect_source_relocs
PARAMS ((bfd *, asection *, struct bfd_link_info *));
static bfd_boolean is_resolvable_asm_expansion
PARAMS ((bfd *, asection *, bfd_byte *, Elf_Internal_Rela *,
struct bfd_link_info *, bfd_boolean *));
static bfd_boolean remove_literals
PARAMS ((bfd *, asection *, struct bfd_link_info *, value_map_hash_table *));
static bfd_boolean relax_section
PARAMS ((bfd *, asection *, struct bfd_link_info *));
static bfd_boolean relax_property_section
PARAMS ((bfd *, asection *, struct bfd_link_info *));
static bfd_boolean relax_section_symbols
PARAMS ((bfd *, asection *));
static bfd_boolean relocations_reach
PARAMS ((source_reloc *, int, const r_reloc *));
static void translate_reloc
PARAMS ((const r_reloc *, r_reloc *));
static Elf_Internal_Rela *get_irel_at_offset
PARAMS ((asection *, Elf_Internal_Rela *, bfd_vma));
static Elf_Internal_Rela *find_associated_l32r_irel
PARAMS ((asection *, bfd_byte *, Elf_Internal_Rela *,
Elf_Internal_Rela *));
static void shrink_dynamic_reloc_sections
PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *));
static bfd_boolean
elf_xtensa_relax_section (abfd, sec, link_info, again)
bfd *abfd;
asection *sec;
struct bfd_link_info *link_info;
bfd_boolean *again;
{
static value_map_hash_table *values = NULL;
xtensa_relax_info *relax_info;
if (!values)
{
values = value_map_hash_table_init ();
relaxing_section = TRUE;
if (!analyze_relocations (link_info))
return FALSE;
}
*again = FALSE;
if ((sec->flags & SEC_LINKER_CREATED) != 0)
return TRUE;
relax_info = get_xtensa_relax_info (sec);
BFD_ASSERT (relax_info != NULL);
switch (relax_info->visited)
{
case 0:
if (!remove_literals (abfd, sec, link_info, values))
return FALSE;
*again = TRUE;
break;
case 1:
if (!relax_section (abfd, sec, link_info))
return FALSE;
*again = TRUE;
break;
case 2:
if (!relax_section_symbols (abfd, sec))
return FALSE;
break;
}
relax_info->visited++;
return TRUE;
}
static bfd_boolean
analyze_relocations (link_info)
struct bfd_link_info *link_info;
{
bfd *abfd;
asection *sec;
bfd_boolean is_relaxable = FALSE;
for (abfd = link_info->input_bfds; abfd != NULL; abfd = abfd->link_next)
for (sec = abfd->sections; sec != NULL; sec = sec->next)
{
init_xtensa_relax_info (sec);
}
for (abfd = link_info->input_bfds; abfd != NULL; abfd = abfd->link_next)
for (sec = abfd->sections; sec != NULL; sec = sec->next)
{
if (!find_relaxable_sections (abfd, sec, link_info, &is_relaxable))
return FALSE;
}
if (!is_relaxable)
return TRUE;
for (abfd = link_info->input_bfds; abfd != NULL; abfd = abfd->link_next)
for (sec = abfd->sections; sec != NULL; sec = sec->next)
{
xtensa_relax_info *relax_info;
relax_info = get_xtensa_relax_info (sec);
if (relax_info->is_relaxable_literal_section)
{
relax_info->src_relocs = (source_reloc *)
bfd_malloc (relax_info->src_count * sizeof (source_reloc));
}
}
for (abfd = link_info->input_bfds; abfd != NULL; abfd = abfd->link_next)
for (sec = abfd->sections; sec != NULL; sec = sec->next)
{
if (!collect_source_relocs (abfd, sec, link_info))
return FALSE;
}
return TRUE;
}
static bfd_boolean
find_relaxable_sections (abfd, sec, link_info, is_relaxable_p)
bfd *abfd;
asection *sec;
struct bfd_link_info *link_info;
bfd_boolean *is_relaxable_p;
{
Elf_Internal_Rela *internal_relocs;
bfd_byte *contents;
bfd_boolean ok = TRUE;
unsigned i;
internal_relocs = retrieve_internal_relocs (abfd, sec,
link_info->keep_memory);
if (internal_relocs == NULL)
return ok;
contents = retrieve_contents (abfd, sec, link_info->keep_memory);
if (contents == NULL && sec->_raw_size != 0)
{
ok = FALSE;
goto error_return;
}
for (i = 0; i < sec->reloc_count; i++)
{
Elf_Internal_Rela *irel = &internal_relocs[i];
r_reloc r_rel;
asection *target_sec;
xtensa_relax_info *target_relax_info;
r_reloc_init (&r_rel, abfd, irel);
target_sec = r_reloc_get_section (&r_rel);
target_relax_info = get_xtensa_relax_info (target_sec);
if (!target_relax_info)
continue;
target_relax_info->src_count++;
if (is_literal_section (target_sec)
&& is_l32r_relocation (sec, contents, irel)
&& r_reloc_is_defined (&r_rel))
{
target_relax_info->is_relaxable_literal_section = TRUE;
*is_relaxable_p = TRUE;
}
}
error_return:
release_contents (sec, contents);
release_internal_relocs (sec, internal_relocs);
return ok;
}
static bfd_boolean
collect_source_relocs (abfd, sec, link_info)
bfd *abfd;
asection *sec;
struct bfd_link_info *link_info;
{
Elf_Internal_Rela *internal_relocs;
bfd_byte *contents;
bfd_boolean ok = TRUE;
unsigned i;
internal_relocs = retrieve_internal_relocs (abfd, sec,
link_info->keep_memory);
if (internal_relocs == NULL)
return ok;
contents = retrieve_contents (abfd, sec, link_info->keep_memory);
if (contents == NULL && sec->_raw_size != 0)
{
ok = FALSE;
goto error_return;
}
for (i = 0; i < sec->reloc_count; i++)
{
Elf_Internal_Rela *irel = &internal_relocs[i];
r_reloc r_rel;
asection *target_sec;
xtensa_relax_info *target_relax_info;
r_reloc_init (&r_rel, abfd, irel);
target_sec = r_reloc_get_section (&r_rel);
target_relax_info = get_xtensa_relax_info (target_sec);
if (target_relax_info
&& target_relax_info->is_relaxable_literal_section)
{
xtensa_opcode opcode;
xtensa_operand opnd;
source_reloc *s_reloc;
int src_next;
src_next = target_relax_info->src_next++;
s_reloc = &target_relax_info->src_relocs[src_next];
opcode = get_relocation_opcode (sec, contents, irel);
if (opcode == XTENSA_UNDEFINED)
opnd = NULL;
else
opnd = xtensa_get_operand (xtensa_default_isa, opcode,
get_relocation_opnd (irel));
init_source_reloc (s_reloc, sec, &r_rel, opnd);
}
}
for (i = 0; i < sec->reloc_count; i++)
{
Elf_Internal_Rela *irel = &internal_relocs[i];
bfd_boolean is_reachable;
if (!is_resolvable_asm_expansion (abfd, sec, contents, irel, link_info,
&is_reachable))
continue;
if (is_reachable)
{
Elf_Internal_Rela *l32r_irel;
r_reloc r_rel;
asection *target_sec;
xtensa_relax_info *target_relax_info;
l32r_irel = find_associated_l32r_irel (sec, contents,
irel, internal_relocs);
if (l32r_irel == NULL)
continue;
r_reloc_init (&r_rel, abfd, l32r_irel);
target_sec = r_reloc_get_section (&r_rel);
target_relax_info = get_xtensa_relax_info (target_sec);
if (target_relax_info
&& target_relax_info->is_relaxable_literal_section)
{
source_reloc *s_reloc;
s_reloc = find_source_reloc (target_relax_info->src_relocs,
target_relax_info->src_next,
sec, l32r_irel);
BFD_ASSERT (s_reloc);
s_reloc->is_null = TRUE;
}
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
R_XTENSA_ASM_SIMPLIFY);
l32r_irel->r_info = ELF32_R_INFO (0, R_XTENSA_NONE);
pin_internal_relocs (sec, internal_relocs);
}
else
{
irel->r_info = ELF32_R_INFO (0, R_XTENSA_NONE);
pin_internal_relocs (sec, internal_relocs);
}
}
error_return:
release_contents (sec, contents);
release_internal_relocs (sec, internal_relocs);
return ok;
}
bfd_boolean
is_resolvable_asm_expansion (abfd, sec, contents, irel, link_info,
is_reachable_p)
bfd *abfd;
asection *sec;
bfd_byte *contents;
Elf_Internal_Rela *irel;
struct bfd_link_info *link_info;
bfd_boolean *is_reachable_p;
{
asection *target_sec;
bfd_vma target_offset;
r_reloc r_rel;
xtensa_opcode opcode, direct_call_opcode;
bfd_vma self_address;
bfd_vma dest_address;
*is_reachable_p = FALSE;
if (contents == NULL)
return FALSE;
if (ELF32_R_TYPE (irel->r_info) != R_XTENSA_ASM_EXPAND)
return FALSE;
opcode = get_expanded_call_opcode (contents + irel->r_offset,
sec->_raw_size - irel->r_offset);
direct_call_opcode = swap_callx_for_call_opcode (opcode);
if (direct_call_opcode == XTENSA_UNDEFINED)
return FALSE;
r_reloc_init (&r_rel, abfd, irel);
if (!r_reloc_is_defined (&r_rel))
return FALSE;
target_sec = r_reloc_get_section (&r_rel);
target_offset = r_reloc_get_target_offset (&r_rel);
if (!target_sec->output_section)
return FALSE;
if (link_info->relocatable
&& (target_sec->output_section != sec->output_section))
return FALSE;
self_address = (sec->output_section->vma
+ sec->output_offset + irel->r_offset + 3);
dest_address = (target_sec->output_section->vma
+ target_sec->output_offset + target_offset);
*is_reachable_p = pcrel_reloc_fits
(xtensa_get_operand (xtensa_default_isa, direct_call_opcode, 0),
self_address, dest_address);
if ((self_address >> CALL_SEGMENT_BITS) !=
(dest_address >> CALL_SEGMENT_BITS))
return FALSE;
return TRUE;
}
static Elf_Internal_Rela *
find_associated_l32r_irel (sec, contents, other_irel, internal_relocs)
asection *sec;
bfd_byte *contents;
Elf_Internal_Rela *other_irel;
Elf_Internal_Rela *internal_relocs;
{
unsigned i;
for (i = 0; i < sec->reloc_count; i++)
{
Elf_Internal_Rela *irel = &internal_relocs[i];
if (irel == other_irel)
continue;
if (irel->r_offset != other_irel->r_offset)
continue;
if (is_l32r_relocation (sec, contents, irel))
return irel;
}
return NULL;
}
static bfd_boolean
remove_literals (abfd, sec, link_info, values)
bfd *abfd;
asection *sec;
struct bfd_link_info *link_info;
value_map_hash_table *values;
{
xtensa_relax_info *relax_info;
bfd_byte *contents;
Elf_Internal_Rela *internal_relocs;
source_reloc *src_relocs;
bfd_boolean ok = TRUE;
int i;
relax_info = get_xtensa_relax_info (sec);
BFD_ASSERT (relax_info);
if (!relax_info->is_relaxable_literal_section)
return ok;
internal_relocs = retrieve_internal_relocs (abfd, sec,
link_info->keep_memory);
contents = retrieve_contents (abfd, sec, link_info->keep_memory);
if (contents == NULL && sec->_raw_size != 0)
{
ok = FALSE;
goto error_return;
}
src_relocs = relax_info->src_relocs;
qsort (src_relocs, relax_info->src_count,
sizeof (source_reloc), source_reloc_compare);
for (i = 0; i < relax_info->src_count; i++)
{
source_reloc *rel;
Elf_Internal_Rela *irel = NULL;
literal_value val;
value_map *val_map;
rel = &src_relocs[i];
irel = get_irel_at_offset (sec, internal_relocs,
rel->r_rel.target_offset);
if (i != 0 && (src_relocs[i-1].r_rel.target_offset
== rel->r_rel.target_offset))
continue;
if (rel->is_null
&& (i == relax_info->src_count - 1
|| (src_relocs[i+1].r_rel.target_offset
!= rel->r_rel.target_offset)))
{
add_removed_literal (&relax_info->removed_list, &rel->r_rel, NULL);
if (irel)
{
if (elf_hash_table (link_info)->dynamic_sections_created)
shrink_dynamic_reloc_sections (link_info, abfd, sec, irel);
irel->r_info = ELF32_R_INFO (0, R_XTENSA_NONE);
}
continue;
}
r_reloc_init (&val.r_rel, abfd, irel);
BFD_ASSERT (rel->r_rel.target_offset < sec->_raw_size);
val.value = bfd_get_32 (abfd, contents + rel->r_rel.target_offset);
val_map = get_cached_value (values, &val);
if (val_map != NULL)
{
if (relocations_reach (rel, relax_info->src_count - i,
&val_map->loc))
{
add_removed_literal (&relax_info->removed_list,
&rel->r_rel, &val_map->loc);
}
else
{
val_map->loc = rel->r_rel;
}
}
else
{
BFD_ASSERT (sec == r_reloc_get_section (&rel->r_rel));
add_value_map (values, &val, &rel->r_rel);
}
}
error_return:
release_contents (sec, contents);
release_internal_relocs (sec, internal_relocs);
return ok;
}
static bfd_boolean
relocations_reach (reloc, remaining_relocs, r_rel)
source_reloc *reloc;
int remaining_relocs;
const r_reloc *r_rel;
{
bfd_vma from_offset, source_address, dest_address;
asection *sec;
int i;
if (!r_reloc_is_defined (r_rel))
return FALSE;
sec = r_reloc_get_section (r_rel);
from_offset = reloc[0].r_rel.target_offset;
for (i = 0; i < remaining_relocs; i++)
{
if (reloc[i].r_rel.target_offset != from_offset)
break;
if (reloc[i].is_null)
continue;
if (r_reloc_get_section (&reloc[i].r_rel)->output_section
!= sec->output_section)
return FALSE;
if (reloc[i].opnd)
{
source_address = (reloc[i].source_sec->output_section->vma
+ reloc[i].source_sec->output_offset
+ reloc[i].r_rel.rela.r_offset);
dest_address = (sec->output_section->vma
+ sec->output_offset
+ r_rel->target_offset);
if (!pcrel_reloc_fits (reloc[i].opnd, source_address, dest_address))
return FALSE;
}
}
return TRUE;
}
static Elf_Internal_Rela *
get_irel_at_offset (sec, internal_relocs, offset)
asection *sec;
Elf_Internal_Rela *internal_relocs;
bfd_vma offset;
{
unsigned i;
if (!internal_relocs)
return NULL;
for (i = 0; i < sec->reloc_count; i++)
{
Elf_Internal_Rela *irel = &internal_relocs[i];
if (irel->r_offset == offset
&& ELF32_R_TYPE (irel->r_info) != R_XTENSA_NONE)
return irel;
}
return NULL;
}
bfd_boolean
relax_section (abfd, sec, link_info)
bfd *abfd;
asection *sec;
struct bfd_link_info *link_info;
{
Elf_Internal_Rela *internal_relocs;
xtensa_relax_info *relax_info;
bfd_byte *contents;
bfd_boolean ok = TRUE;
unsigned i;
relax_info = get_xtensa_relax_info (sec);
BFD_ASSERT (relax_info);
if (xtensa_is_property_section (sec))
{
BFD_ASSERT (!relax_info->is_relaxable_literal_section);
return relax_property_section (abfd, sec, link_info);
}
internal_relocs = retrieve_internal_relocs (abfd, sec,
link_info->keep_memory);
contents = retrieve_contents (abfd, sec, link_info->keep_memory);
if (contents == NULL && sec->_raw_size != 0)
{
ok = FALSE;
goto error_return;
}
if (internal_relocs)
{
for (i = 0; i < sec->reloc_count; i++)
{
Elf_Internal_Rela *irel;
xtensa_relax_info *target_relax_info;
bfd_vma source_offset;
r_reloc r_rel;
unsigned r_type;
asection *target_sec;
irel = &internal_relocs[i];
source_offset = irel->r_offset;
r_type = ELF32_R_TYPE (irel->r_info);
r_reloc_init (&r_rel, abfd, irel);
if (relax_info->is_relaxable_literal_section)
{
if (r_type != R_XTENSA_NONE
&& find_removed_literal (&relax_info->removed_list,
irel->r_offset))
{
if (elf_hash_table (link_info)->dynamic_sections_created)
shrink_dynamic_reloc_sections (link_info, abfd, sec, irel);
irel->r_info = ELF32_R_INFO (0, R_XTENSA_NONE);
irel->r_offset = offset_with_removed_literals
(&relax_info->removed_list, irel->r_offset);
continue;
}
source_offset =
offset_with_removed_literals (&relax_info->removed_list,
irel->r_offset);
irel->r_offset = source_offset;
}
target_sec = r_reloc_get_section (&r_rel);
target_relax_info = get_xtensa_relax_info (target_sec);
if (target_relax_info
&& target_relax_info->is_relaxable_literal_section)
{
r_reloc new_rel;
reloc_bfd_fix *fix;
translate_reloc (&r_rel, &new_rel);
fix = reloc_bfd_fix_init (sec, source_offset, r_type, 0,
r_reloc_get_section (&new_rel),
new_rel.target_offset);
add_fix (sec, fix);
}
pin_internal_relocs (sec, internal_relocs);
}
}
if (relax_info->is_relaxable_literal_section)
{
unsigned long size = sec->_cooked_size;
unsigned long removed = 0;
removed_literal *reloc = relax_info->removed_list.head;
for (; reloc; reloc = reloc->next)
{
unsigned long upper = sec->_raw_size;
bfd_vma start = reloc->from.target_offset + 4;
if (reloc->next)
upper = reloc->next->from.target_offset;
if (upper - start != 0)
{
BFD_ASSERT (start <= upper);
memmove (contents + start - removed - 4,
contents + start,
upper - start );
pin_contents (sec, contents);
}
removed += 4;
size -= 4;
}
sec->_cooked_size = size;
sec->_raw_size = size;
}
error_return:
release_internal_relocs (sec, internal_relocs);
release_contents (sec, contents);
return ok;
}
static void
translate_reloc (orig_rel, new_rel)
const r_reloc *orig_rel;
r_reloc *new_rel;
{
asection *sec;
xtensa_relax_info *relax_info;
removed_literal *removed;
unsigned long new_offset;
*new_rel = *orig_rel;
if (!r_reloc_is_defined (orig_rel))
return;
sec = r_reloc_get_section (orig_rel);
relax_info = get_xtensa_relax_info (sec);
BFD_ASSERT (relax_info);
if (!relax_info->is_relaxable_literal_section)
return;
removed = find_removed_literal (&relax_info->removed_list,
orig_rel->target_offset);
if (removed)
{
asection *new_sec;
BFD_ASSERT (removed->to.abfd != NULL);
*new_rel = removed->to;
new_sec = r_reloc_get_section (new_rel);
if (new_sec != sec)
{
sec = new_sec;
relax_info = get_xtensa_relax_info (sec);
if (!relax_info || !relax_info->is_relaxable_literal_section)
return;
}
}
new_offset = offset_with_removed_literals (&relax_info->removed_list,
new_rel->target_offset);
new_rel->target_offset = new_offset;
new_rel->rela.r_addend += (new_offset - new_rel->target_offset);
}
static void
shrink_dynamic_reloc_sections (info, abfd, input_section, rel)
struct bfd_link_info *info;
bfd *abfd;
asection *input_section;
Elf_Internal_Rela *rel;
{
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
unsigned long r_symndx;
int r_type;
struct elf_link_hash_entry *h;
bfd_boolean dynamic_symbol;
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (abfd);
r_type = ELF32_R_TYPE (rel->r_info);
r_symndx = ELF32_R_SYM (rel->r_info);
if (r_symndx < symtab_hdr->sh_info)
h = NULL;
else
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
dynamic_symbol = xtensa_elf_dynamic_symbol_p (h, info);
if ((r_type == R_XTENSA_32 || r_type == R_XTENSA_PLT)
&& (input_section->flags & SEC_ALLOC) != 0
&& (dynamic_symbol || info->shared))
{
bfd *dynobj;
const char *srel_name;
asection *srel;
bfd_boolean is_plt = FALSE;
dynobj = elf_hash_table (info)->dynobj;
BFD_ASSERT (dynobj != NULL);
if (dynamic_symbol && r_type == R_XTENSA_PLT)
{
srel_name = ".rela.plt";
is_plt = TRUE;
}
else
srel_name = ".rela.got";
srel = bfd_get_section_by_name (dynobj, srel_name);
BFD_ASSERT (srel != NULL);
BFD_ASSERT (srel->_cooked_size >= sizeof (Elf32_External_Rela));
srel->_cooked_size -= sizeof (Elf32_External_Rela);
srel->_raw_size = srel->_cooked_size;
if (is_plt)
{
asection *splt, *sgotplt, *srelgot;
int reloc_index, chunk;
reloc_index = srel->_cooked_size / sizeof (Elf32_External_Rela);
chunk = reloc_index / PLT_ENTRIES_PER_CHUNK;
splt = elf_xtensa_get_plt_section (dynobj, chunk);
sgotplt = elf_xtensa_get_gotplt_section (dynobj, chunk);
BFD_ASSERT (splt != NULL && sgotplt != NULL);
if (reloc_index % PLT_ENTRIES_PER_CHUNK == 0)
{
srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
BFD_ASSERT (srelgot != NULL);
srelgot->reloc_count -= 2;
srelgot->_cooked_size -= 2 * sizeof (Elf32_External_Rela);
srelgot->_raw_size = srelgot->_cooked_size;
sgotplt->_cooked_size -= 8;
BFD_ASSERT (sgotplt->_cooked_size == 4);
BFD_ASSERT (splt->_cooked_size == PLT_ENTRY_SIZE);
}
BFD_ASSERT (sgotplt->_cooked_size >= 4);
BFD_ASSERT (splt->_cooked_size >= PLT_ENTRY_SIZE);
sgotplt->_cooked_size -= 4;
splt->_cooked_size -= PLT_ENTRY_SIZE;
sgotplt->_raw_size = sgotplt->_cooked_size;
splt->_raw_size = splt->_cooked_size;
}
}
}
static bfd_boolean
relax_property_section (abfd, sec, link_info)
bfd *abfd;
asection *sec;
struct bfd_link_info *link_info;
{
Elf_Internal_Rela *internal_relocs;
bfd_byte *contents;
unsigned i, nexti;
bfd_boolean ok = TRUE;
internal_relocs = retrieve_internal_relocs (abfd, sec,
link_info->keep_memory);
contents = retrieve_contents (abfd, sec, link_info->keep_memory);
if (contents == NULL && sec->_raw_size != 0)
{
ok = FALSE;
goto error_return;
}
if (internal_relocs)
{
for (i = 0; i < sec->reloc_count; i++)
{
Elf_Internal_Rela *irel;
xtensa_relax_info *target_relax_info;
r_reloc r_rel;
unsigned r_type;
asection *target_sec;
irel = &internal_relocs[i];
r_type = ELF32_R_TYPE (irel->r_info);
if (r_type == R_XTENSA_NONE)
continue;
r_reloc_init (&r_rel, abfd, irel);
target_sec = r_reloc_get_section (&r_rel);
target_relax_info = get_xtensa_relax_info (target_sec);
if (target_relax_info
&& target_relax_info->is_relaxable_literal_section)
{
bfd_vma new_offset;
bfd_vma new_end_offset;
bfd_byte *size_p;
long old_size, new_size;
new_offset =
offset_with_removed_literals (&target_relax_info->removed_list,
r_rel.target_offset);
size_p = &contents[irel->r_offset + 4];
old_size = bfd_get_32 (abfd, &contents[irel->r_offset + 4]);
new_end_offset =
offset_with_removed_literals (&target_relax_info->removed_list,
r_rel.target_offset + old_size);
new_size = new_end_offset - new_offset;
if (new_size != old_size)
{
bfd_put_32 (abfd, new_size, size_p);
pin_contents (sec, contents);
}
if (new_offset != r_rel.target_offset)
{
bfd_vma diff = new_offset - r_rel.target_offset;
irel->r_addend += diff;
pin_internal_relocs (sec, internal_relocs);
}
}
}
}
if (internal_relocs)
{
Elf_Internal_Rela *last_irel = NULL;
int removed_bytes = 0;
bfd_vma offset, last_irel_offset;
bfd_vma section_size;
qsort (internal_relocs, sec->reloc_count, sizeof (Elf_Internal_Rela),
internal_reloc_compare);
nexti = 0;
pin_internal_relocs (sec, internal_relocs);
pin_contents (sec, contents);
last_irel_offset = (bfd_vma) -1;
section_size = (sec->_cooked_size ? sec->_cooked_size : sec->_raw_size);
BFD_ASSERT (section_size % 8 == 0);
for (offset = 0; offset < section_size; offset += 8)
{
Elf_Internal_Rela *irel, *next_irel;
bfd_vma bytes_to_remove, size, actual_offset;
bfd_boolean remove_this_irel;
irel = NULL;
next_irel = NULL;
for (i = nexti; i < sec->reloc_count; i++)
{
if (ELF32_R_TYPE (internal_relocs[i].r_info) != R_XTENSA_NONE)
{
irel = &internal_relocs[i];
break;
}
internal_relocs[i].r_offset -= removed_bytes;
}
for (nexti = i + 1; nexti < sec->reloc_count; nexti++)
{
if (ELF32_R_TYPE (internal_relocs[nexti].r_info)
!= R_XTENSA_NONE)
{
next_irel = &internal_relocs[nexti];
break;
}
internal_relocs[nexti].r_offset -= removed_bytes;
}
remove_this_irel = FALSE;
bytes_to_remove = 0;
actual_offset = offset - removed_bytes;
size = bfd_get_32 (abfd, &contents[actual_offset + 4]);
BFD_ASSERT (!irel || (int) irel->r_offset > (int) last_irel_offset);
BFD_ASSERT (!next_irel || next_irel->r_offset > irel->r_offset);
if (irel && irel->r_offset == offset + 4)
{
irel->r_offset -= removed_bytes;
last_irel_offset = irel->r_offset;
}
else if (next_irel && next_irel->r_offset == offset + 4)
{
nexti += 1;
irel->r_offset -= removed_bytes;
next_irel->r_offset -= removed_bytes;
last_irel_offset = next_irel->r_offset;
}
else if (size == 0)
{
bytes_to_remove = 8;
if (irel && irel->r_offset == offset)
{
remove_this_irel = TRUE;
irel->r_offset -= removed_bytes;
last_irel_offset = irel->r_offset;
}
}
else if (irel && irel->r_offset == offset)
{
if (ELF32_R_TYPE (irel->r_info) == R_XTENSA_32)
{
if (last_irel)
{
bfd_vma old_size =
bfd_get_32 (abfd, &contents[last_irel->r_offset + 4]);
bfd_vma old_address =
(last_irel->r_addend
+ bfd_get_32 (abfd, &contents[last_irel->r_offset]));
bfd_vma new_address =
(irel->r_addend
+ bfd_get_32 (abfd, &contents[actual_offset]));
if ((ELF32_R_SYM (irel->r_info) ==
ELF32_R_SYM (last_irel->r_info))
&& (old_address + old_size == new_address))
{
bfd_put_32 (abfd, old_size + size,
&contents[last_irel->r_offset + 4]);
bytes_to_remove = 8;
remove_this_irel = TRUE;
}
else
last_irel = irel;
}
else
last_irel = irel;
}
irel->r_offset -= removed_bytes;
last_irel_offset = irel->r_offset;
}
if (remove_this_irel)
{
irel->r_info = ELF32_R_INFO (0, R_XTENSA_NONE);
irel->r_offset -= bytes_to_remove;
}
if (bytes_to_remove != 0)
{
removed_bytes += bytes_to_remove;
if (offset + 8 < section_size)
memmove (&contents[actual_offset],
&contents[actual_offset+8],
section_size - offset - 8);
}
}
if (removed_bytes)
{
memset (&contents[section_size - removed_bytes], 0, removed_bytes);
sec->_cooked_size = section_size - removed_bytes;
sec->_raw_size = sec->_cooked_size;
if (xtensa_is_littable_section (sec))
{
bfd *dynobj = elf_hash_table (link_info)->dynobj;
if (dynobj)
{
asection *sgotloc =
bfd_get_section_by_name (dynobj, ".got.loc");
if (sgotloc)
{
bfd_size_type sgotloc_size =
(sgotloc->_cooked_size ? sgotloc->_cooked_size
: sgotloc->_raw_size);
sgotloc->_cooked_size = sgotloc_size - removed_bytes;
sgotloc->_raw_size = sgotloc_size - removed_bytes;
}
}
}
}
}
error_return:
release_internal_relocs (sec, internal_relocs);
release_contents (sec, contents);
return ok;
}
bfd_boolean
relax_section_symbols (abfd, sec)
bfd *abfd;
asection *sec;
{
xtensa_relax_info *relax_info;
unsigned int sec_shndx;
Elf_Internal_Shdr *symtab_hdr;
Elf_Internal_Sym *isymbuf;
unsigned i, num_syms, num_locals;
relax_info = get_xtensa_relax_info (sec);
BFD_ASSERT (relax_info);
if (!relax_info->is_relaxable_literal_section)
return TRUE;
sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
isymbuf = retrieve_local_syms (abfd);
num_syms = symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
num_locals = symtab_hdr->sh_info;
for (i = 0; i < num_locals; i++)
{
Elf_Internal_Sym *isym = &isymbuf[i];
if (isym->st_shndx == sec_shndx)
{
bfd_vma new_address = offset_with_removed_literals
(&relax_info->removed_list, isym->st_value);
if (new_address != isym->st_value)
isym->st_value = new_address;
}
}
for (i = 0; i < (num_syms - num_locals); i++)
{
struct elf_link_hash_entry *sym_hash;
sym_hash = elf_sym_hashes (abfd)[i];
if (sym_hash->root.type == bfd_link_hash_warning)
sym_hash = (struct elf_link_hash_entry *) sym_hash->root.u.i.link;
if ((sym_hash->root.type == bfd_link_hash_defined
|| sym_hash->root.type == bfd_link_hash_defweak)
&& sym_hash->root.u.def.section == sec)
{
bfd_vma new_address = offset_with_removed_literals
(&relax_info->removed_list, sym_hash->root.u.def.value);
if (new_address != sym_hash->root.u.def.value)
sym_hash->root.u.def.value = new_address;
}
}
return TRUE;
}
static void
do_fix_for_relocatable_link (rel, input_bfd, input_section)
Elf_Internal_Rela *rel;
bfd *input_bfd;
asection *input_section;
{
r_reloc r_rel;
asection *sec, *old_sec;
bfd_vma old_offset;
int r_type = ELF32_R_TYPE (rel->r_info);
reloc_bfd_fix *fix_list;
reloc_bfd_fix *fix;
if (r_type == R_XTENSA_NONE)
return;
fix_list = (get_xtensa_relax_info (input_section))->fix_list;
if (fix_list == NULL)
return;
fix = get_bfd_fix (fix_list, input_section, rel->r_offset, r_type);
if (fix == NULL)
return;
r_reloc_init (&r_rel, input_bfd, rel);
old_sec = r_reloc_get_section (&r_rel);
old_offset = r_reloc_get_target_offset (&r_rel);
if (old_sec == NULL || !r_reloc_is_defined (&r_rel))
{
BFD_ASSERT (r_type == R_XTENSA_ASM_EXPAND);
}
else
{
sec = fix->target_sec;
rel->r_addend += ((sec->output_offset + fix->target_offset)
- (old_sec->output_offset + old_offset));
}
}
static void
do_fix_for_final_link (rel, input_section, relocationp)
Elf_Internal_Rela *rel;
asection *input_section;
bfd_vma *relocationp;
{
asection *sec;
int r_type = ELF32_R_TYPE (rel->r_info);
reloc_bfd_fix *fix_list;
reloc_bfd_fix *fix;
if (r_type == R_XTENSA_NONE)
return;
fix_list = (get_xtensa_relax_info (input_section))->fix_list;
if (fix_list == NULL)
return;
fix = get_bfd_fix (fix_list, input_section, rel->r_offset, r_type);
if (fix == NULL)
return;
sec = fix->target_sec;
*relocationp = (sec->output_section->vma
+ sec->output_offset
+ fix->target_offset - rel->r_addend);
}
static asection *
elf_xtensa_get_plt_section (dynobj, chunk)
bfd *dynobj;
int chunk;
{
char plt_name[10];
if (chunk == 0)
return bfd_get_section_by_name (dynobj, ".plt");
sprintf (plt_name, ".plt.%u", chunk);
return bfd_get_section_by_name (dynobj, plt_name);
}
static asection *
elf_xtensa_get_gotplt_section (dynobj, chunk)
bfd *dynobj;
int chunk;
{
char got_name[14];
if (chunk == 0)
return bfd_get_section_by_name (dynobj, ".got.plt");
sprintf (got_name, ".got.plt.%u", chunk);
return bfd_get_section_by_name (dynobj, got_name);
}
static asection *
get_elf_r_symndx_section (abfd, r_symndx)
bfd *abfd;
unsigned long r_symndx;
{
Elf_Internal_Shdr *symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
asection *target_sec = NULL;
if (r_symndx < symtab_hdr->sh_info)
{
Elf_Internal_Sym *isymbuf;
unsigned int section_index;
isymbuf = retrieve_local_syms (abfd);
section_index = isymbuf[r_symndx].st_shndx;
if (section_index == SHN_UNDEF)
target_sec = bfd_und_section_ptr;
else if (section_index > 0 && section_index < SHN_LORESERVE)
target_sec = bfd_section_from_elf_index (abfd, section_index);
else if (section_index == SHN_ABS)
target_sec = bfd_abs_section_ptr;
else if (section_index == SHN_COMMON)
target_sec = bfd_com_section_ptr;
else
target_sec = NULL;
}
else
{
unsigned long indx = r_symndx - symtab_hdr->sh_info;
struct elf_link_hash_entry *h = elf_sym_hashes (abfd)[indx];
while (h->root.type == bfd_link_hash_indirect
|| h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
switch (h->root.type)
{
case bfd_link_hash_defined:
case bfd_link_hash_defweak:
target_sec = h->root.u.def.section;
break;
case bfd_link_hash_common:
target_sec = bfd_com_section_ptr;
break;
case bfd_link_hash_undefined:
case bfd_link_hash_undefweak:
target_sec = bfd_und_section_ptr;
break;
default:
target_sec = bfd_und_section_ptr;
break;
}
}
return target_sec;
}
static struct elf_link_hash_entry *
get_elf_r_symndx_hash_entry (abfd, r_symndx)
bfd *abfd;
unsigned long r_symndx;
{
unsigned long indx;
struct elf_link_hash_entry *h;
Elf_Internal_Shdr *symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
if (r_symndx < symtab_hdr->sh_info)
return NULL;
indx = r_symndx - symtab_hdr->sh_info;
h = elf_sym_hashes (abfd)[indx];
while (h->root.type == bfd_link_hash_indirect
|| h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
return h;
}
static bfd_vma
get_elf_r_symndx_offset (abfd, r_symndx)
bfd *abfd;
unsigned long r_symndx;
{
Elf_Internal_Shdr *symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
bfd_vma offset = 0;
if (r_symndx < symtab_hdr->sh_info)
{
Elf_Internal_Sym *isymbuf;
isymbuf = retrieve_local_syms (abfd);
offset = isymbuf[r_symndx].st_value;
}
else
{
unsigned long indx = r_symndx - symtab_hdr->sh_info;
struct elf_link_hash_entry *h =
elf_sym_hashes (abfd)[indx];
while (h->root.type == bfd_link_hash_indirect
|| h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
if (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
offset = h->root.u.def.value;
}
return offset;
}
static bfd_boolean
pcrel_reloc_fits (opnd, self_address, dest_address)
xtensa_operand opnd;
bfd_vma self_address;
bfd_vma dest_address;
{
uint32 new_address =
xtensa_operand_do_reloc (opnd, dest_address, self_address);
return (xtensa_operand_encode (opnd, &new_address)
== xtensa_encode_result_ok);
}
static int linkonce_len = sizeof (".gnu.linkonce.") - 1;
static int insn_sec_len = sizeof (XTENSA_INSN_SEC_NAME) - 1;
static int lit_sec_len = sizeof (XTENSA_LIT_SEC_NAME) - 1;
static bfd_boolean
xtensa_is_property_section (sec)
asection *sec;
{
if (strncmp (XTENSA_INSN_SEC_NAME, sec->name, insn_sec_len) == 0
|| strncmp (XTENSA_LIT_SEC_NAME, sec->name, lit_sec_len) == 0)
return TRUE;
if (strncmp (".gnu.linkonce.", sec->name, linkonce_len) == 0
&& (sec->name[linkonce_len] == 'x'
|| sec->name[linkonce_len] == 'p')
&& sec->name[linkonce_len + 1] == '.')
return TRUE;
return FALSE;
}
static bfd_boolean
xtensa_is_littable_section (sec)
asection *sec;
{
if (strncmp (XTENSA_LIT_SEC_NAME, sec->name, lit_sec_len) == 0)
return TRUE;
if (strncmp (".gnu.linkonce.", sec->name, linkonce_len) == 0
&& sec->name[linkonce_len] == 'p'
&& sec->name[linkonce_len + 1] == '.')
return TRUE;
return FALSE;
}
static bfd_boolean
is_literal_section (sec)
asection *sec;
{
if (sec == NULL || sec->name == NULL)
return FALSE;
return (strstr (sec->name, "literal") != NULL);
}
static int
internal_reloc_compare (ap, bp)
const PTR ap;
const PTR bp;
{
const Elf_Internal_Rela *a = (const Elf_Internal_Rela *) ap;
const Elf_Internal_Rela *b = (const Elf_Internal_Rela *) bp;
return (a->r_offset - b->r_offset);
}
char *
xtensa_get_property_section_name (sec, base_name)
asection *sec;
const char *base_name;
{
if (strncmp (sec->name, ".gnu.linkonce.", linkonce_len) == 0)
{
char *prop_sec_name;
const char *suffix;
char linkonce_kind = 0;
if (strcmp (base_name, XTENSA_INSN_SEC_NAME) == 0)
linkonce_kind = 'x';
else if (strcmp (base_name, XTENSA_LIT_SEC_NAME) == 0)
linkonce_kind = 'p';
else
abort ();
prop_sec_name = (char *) bfd_malloc (strlen (sec->name) + 1);
memcpy (prop_sec_name, ".gnu.linkonce.", linkonce_len);
prop_sec_name[linkonce_len] = linkonce_kind;
prop_sec_name[linkonce_len + 1] = '.';
suffix = sec->name + linkonce_len;
while (*suffix)
{
suffix += 1;
if (suffix[-1] == '.')
break;
}
strcpy (prop_sec_name + linkonce_len + 2, suffix);
return prop_sec_name;
}
return strdup (base_name);
}
bfd_boolean
xtensa_callback_required_dependence (abfd, sec, link_info, callback, closure)
bfd *abfd;
asection *sec;
struct bfd_link_info *link_info;
deps_callback_t callback;
PTR closure;
{
Elf_Internal_Rela *internal_relocs;
bfd_byte *contents;
unsigned i;
bfd_boolean ok = TRUE;
if ((sec->flags & SEC_LINKER_CREATED) != 0
&& strncmp (sec->name, ".plt", 4) == 0)
{
asection *sgotplt;
if (sec->name[4] == '\0')
sgotplt = bfd_get_section_by_name (sec->owner, ".got.plt");
else
{
char got_name[14];
int chunk = 0;
BFD_ASSERT (sec->name[4] == '.');
chunk = strtol (&sec->name[5], NULL, 10);
sprintf (got_name, ".got.plt.%u", chunk);
sgotplt = bfd_get_section_by_name (sec->owner, got_name);
}
BFD_ASSERT (sgotplt);
(*callback) (sec, sec->_raw_size, sgotplt, 0, closure);
}
internal_relocs = retrieve_internal_relocs (abfd, sec,
link_info->keep_memory);
if (internal_relocs == NULL
|| sec->reloc_count == 0)
return ok;
contents = retrieve_contents (abfd, sec, link_info->keep_memory);
if (contents == NULL && sec->_raw_size != 0)
{
ok = FALSE;
goto error_return;
}
if (xtensa_default_isa == NULL)
xtensa_isa_init ();
for (i = 0; i < sec->reloc_count; i++)
{
Elf_Internal_Rela *irel = &internal_relocs[i];
if (is_l32r_relocation (sec, contents, irel))
{
r_reloc l32r_rel;
asection *target_sec;
bfd_vma target_offset;
r_reloc_init (&l32r_rel, abfd, irel);
target_sec = NULL;
target_offset = 0;
if (r_reloc_is_defined (&l32r_rel))
{
target_sec = r_reloc_get_section (&l32r_rel);
target_offset = r_reloc_get_target_offset (&l32r_rel);
}
(*callback) (sec, irel->r_offset, target_sec, target_offset,
closure);
}
}
error_return:
release_internal_relocs (sec, internal_relocs);
release_contents (sec, contents);
return ok;
}
static struct bfd_elf_special_section const elf_xtensa_special_sections[]=
{
{ ".literal", 8, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
{ ".init.literal", 13, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
{ ".fini.literal", 13, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
{ NULL, 0, 0, 0, 0 }
};
#ifndef ELF_ARCH
#define TARGET_LITTLE_SYM bfd_elf32_xtensa_le_vec
#define TARGET_LITTLE_NAME "elf32-xtensa-le"
#define TARGET_BIG_SYM bfd_elf32_xtensa_be_vec
#define TARGET_BIG_NAME "elf32-xtensa-be"
#define ELF_ARCH bfd_arch_xtensa
#define ELF_MACHINE_CODE EM_XTENSA_OLD
#define ELF_MACHINE_ALT1 EM_XTENSA
#if XCHAL_HAVE_MMU
#define ELF_MAXPAGESIZE (1 << XCHAL_MMU_MIN_PTE_PAGE_SIZE)
#else
#define ELF_MAXPAGESIZE 1
#endif
#endif
#define elf_backend_can_gc_sections 1
#define elf_backend_can_refcount 1
#define elf_backend_plt_readonly 1
#define elf_backend_got_header_size 4
#define elf_backend_want_dynbss 0
#define elf_backend_want_got_plt 1
#define elf_info_to_howto elf_xtensa_info_to_howto_rela
#define bfd_elf32_bfd_final_link bfd_elf32_bfd_final_link
#define bfd_elf32_bfd_merge_private_bfd_data elf_xtensa_merge_private_bfd_data
#define bfd_elf32_new_section_hook elf_xtensa_new_section_hook
#define bfd_elf32_bfd_print_private_bfd_data elf_xtensa_print_private_bfd_data
#define bfd_elf32_bfd_relax_section elf_xtensa_relax_section
#define bfd_elf32_bfd_reloc_type_lookup elf_xtensa_reloc_type_lookup
#define bfd_elf32_bfd_set_private_flags elf_xtensa_set_private_flags
#define elf_backend_adjust_dynamic_symbol elf_xtensa_adjust_dynamic_symbol
#define elf_backend_check_relocs elf_xtensa_check_relocs
#define elf_backend_create_dynamic_sections elf_xtensa_create_dynamic_sections
#define elf_backend_discard_info elf_xtensa_discard_info
#define elf_backend_ignore_discarded_relocs elf_xtensa_ignore_discarded_relocs
#define elf_backend_final_write_processing elf_xtensa_final_write_processing
#define elf_backend_finish_dynamic_sections elf_xtensa_finish_dynamic_sections
#define elf_backend_finish_dynamic_symbol elf_xtensa_finish_dynamic_symbol
#define elf_backend_gc_mark_hook elf_xtensa_gc_mark_hook
#define elf_backend_gc_sweep_hook elf_xtensa_gc_sweep_hook
#define elf_backend_grok_prstatus elf_xtensa_grok_prstatus
#define elf_backend_grok_psinfo elf_xtensa_grok_psinfo
#define elf_backend_hide_symbol elf_xtensa_hide_symbol
#define elf_backend_modify_segment_map elf_xtensa_modify_segment_map
#define elf_backend_object_p elf_xtensa_object_p
#define elf_backend_reloc_type_class elf_xtensa_reloc_type_class
#define elf_backend_relocate_section elf_xtensa_relocate_section
#define elf_backend_size_dynamic_sections elf_xtensa_size_dynamic_sections
#define elf_backend_special_sections elf_xtensa_special_sections
#include "elf32-target.h"