/* PowerPC64-specific support for 64-bit ELF.
- Copyright (C) 1999-2014 Free Software Foundation, Inc.
+ Copyright (C) 1999-2016 Free Software Foundation, Inc.
Written by Linus Nordberg, Swox AB <info@swox.com>,
based on elf32-ppc.c by Ian Lance Taylor.
Largely rewritten by Alan Modra.
#define ELF_TARGET_ID PPC64_ELF_DATA
#define ELF_MACHINE_CODE EM_PPC64
#define ELF_MAXPAGESIZE 0x10000
-#define ELF_COMMONPAGESIZE 0x1000
+#define ELF_COMMONPAGESIZE 0x10000
#define elf_info_to_howto ppc64_elf_info_to_howto
#define elf_backend_want_got_sym 0
/* TOC base pointers offset from start of TOC. */
#define TOC_BASE_OFF 0x8000
+/* TOC base alignment. */
+#define TOC_BASE_ALIGN 256
/* Offset of tp and dtp pointers from start of TLS block. */
#define TP_OFFSET 0x7000
#define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
#define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
+#define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */
+#define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */
-#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
+#define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */
+#define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */
+#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
#define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
#define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
#define NO_OPD_RELOCS 0
#endif
+#ifndef ARRAY_SIZE
+#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
+#endif
+
static inline int
abiversion (bfd *abfd)
{
/* This reloc does nothing. */
HOWTO (R_PPC64_NONE, /* type */
0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
+ 3, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_unhandled_reloc, /* special_function */
"R_PPC64_PLTREL32", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
TRUE), /* pcrel_offset */
+ /* Like R_PPC64_REL16_HA but for split field in addpcis. */
+ HOWTO (R_PPC64_REL16DX_HA, /* type */
+ 16, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ ppc64_elf_ha_reloc, /* special_function */
+ "R_PPC64_REL16DX_HA", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0x1fffc1, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
/* Like R_PPC64_ADDR16_HI, but no overflow. */
HOWTO (R_PPC64_ADDR16_HIGH, /* type */
16, /* rightshift */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
+ /* Marker reloc on ELFv2 large-model function entry. */
+ HOWTO (R_PPC64_ENTRY,
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC64_ENTRY", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
/* Like ADDR64, but use local entry point of function. */
HOWTO (R_PPC64_ADDR64_LOCAL, /* type */
0, /* rightshift */
{
unsigned int i, type;
- for (i = 0;
- i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
- i++)
+ for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++)
{
type = ppc64_elf_howto_raw[i].type;
- BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
- / sizeof (ppc64_elf_howto_table[0])));
+ BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table));
ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
}
}
break;
case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
break;
+ case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA;
+ break;
+ case BFD_RELOC_PPC64_ENTRY: r = R_PPC64_ENTRY;
+ break;
case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL;
break;
case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
{
unsigned int i;
- for (i = 0;
- i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
- i++)
+ for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++)
if (ppc64_elf_howto_raw[i].name != NULL
&& strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
return &ppc64_elf_howto_raw[i];
ppc_howto_init ();
type = ELF64_R_TYPE (dst->r_info);
- if (type >= (sizeof (ppc64_elf_howto_table)
- / sizeof (ppc64_elf_howto_table[0])))
+ if (type >= ARRAY_SIZE (ppc64_elf_howto_table))
{
- (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
- abfd, (int) type);
+ _bfd_error_handler (_("%B: invalid relocation type %d"),
+ abfd, (int) type);
type = R_PPC64_NONE;
}
cache_ptr->howto = ppc64_elf_howto_table[type];
void *data, asection *input_section,
bfd *output_bfd, char **error_message)
{
+ enum elf_ppc64_reloc_type r_type;
+ long insn;
+ bfd_size_type octets;
+ bfd_vma value;
+
/* If this is a relocatable link (output_bfd test tells us), just
call the generic function. Any adjustment will be done at final
link time. */
We won't actually be using the low 16 bits, so trashing them
doesn't matter. */
reloc_entry->addend += 0x8000;
- return bfd_reloc_continue;
+ r_type = reloc_entry->howto->type;
+ if (r_type != R_PPC64_REL16DX_HA)
+ return bfd_reloc_continue;
+
+ value = 0;
+ if (!bfd_is_com_section (symbol->section))
+ value = symbol->value;
+ value += (reloc_entry->addend
+ + symbol->section->output_offset
+ + symbol->section->output_section->vma);
+ value -= (reloc_entry->address
+ + input_section->output_offset
+ + input_section->output_section->vma);
+ value = (bfd_signed_vma) value >> 16;
+
+ octets = reloc_entry->address * bfd_octets_per_byte (abfd);
+ insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
+ insn &= ~0x1fffc1;
+ insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
+ bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
+ if (value + 0x8000 > 0xffff)
+ return bfd_reloc_overflow;
+ return bfd_reloc_ok;
}
static bfd_reloc_status_type
elf_symbol_type *elfsym = (elf_symbol_type *) symbol;
if (symbol->section->owner != abfd
+ && symbol->section->owner != NULL
&& abiversion (symbol->section->owner) >= 2)
{
unsigned int i;
}
/* Fix bad default arch selected for a 64 bit input bfd when the
- default is 32 bit. */
+ default is 32 bit. Also select arch based on apuinfo. */
static bfd_boolean
ppc64_elf_object_p (bfd *abfd)
{
- if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
+ if (!abfd->arch_info->the_default)
+ return TRUE;
+
+ if (abfd->arch_info->bits_per_word == 32)
{
Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
}
}
- return TRUE;
+ return _bfd_elf_ppc_set_arch (abfd);
}
/* Support for core dump NOTE sections. */
union
{
- /* An array with one entry for each opd function descriptor. */
+ /* An array with one entry for each opd function descriptor,
+ and some spares since opd entries may be either 16 or 24 bytes. */
+#define OPD_NDX(OFF) ((OFF) >> 4)
struct _opd_sec_data
{
/* Points to the function code section for local opd entries. */
\f
/* Parameters for the qsort hook. */
static bfd_boolean synthetic_relocatable;
+static asection *synthetic_opd;
/* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
return 1;
/* then .opd symbols. */
- if (strcmp (a->section->name, ".opd") == 0
- && strcmp (b->section->name, ".opd") != 0)
- return -1;
- if (strcmp (a->section->name, ".opd") != 0
- && strcmp (b->section->name, ".opd") == 0)
- return 1;
+ if (synthetic_opd != NULL)
+ {
+ if (strcmp (a->section->name, ".opd") == 0
+ && strcmp (b->section->name, ".opd") != 0)
+ return -1;
+ if (strcmp (a->section->name, ".opd") != 0
+ && strcmp (b->section->name, ".opd") == 0)
+ return 1;
+ }
/* then other code symbols. */
if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
/* Search SYMS for a symbol of the given VALUE. */
static asymbol *
-sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
+sym_exists_at (asymbol **syms, long lo, long hi, unsigned int id, bfd_vma value)
{
long mid;
- if (id == -1)
+ if (id == (unsigned) -1)
{
while (lo < hi)
{
}
/* Create synthetic symbols, effectively restoring "dot-symbol" function
- entry syms. Also generate @plt symbols for the glink branch table. */
+ entry syms. Also generate @plt symbols for the glink branch table.
+ Returns count of synthetic symbols in RET or -1 on error. */
static long
ppc64_elf_get_synthetic_symtab (bfd *abfd,
memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
synthetic_relocatable = relocatable;
+ synthetic_opd = opd;
qsort (syms, symcount, sizeof (*syms), compare_symbols);
if (!relocatable && symcount > 1)
}
i = 0;
- if (strcmp (syms[i]->section->name, ".opd") == 0)
+ /* Note that here and in compare_symbols we can't compare opd and
+ sym->section directly. With separate debug info files, the
+ symbols will be extracted from the debug file while abfd passed
+ to this function is the real binary. */
+ if (opd != NULL && strcmp (syms[i]->section->name, ".opd") == 0)
++i;
codesecsym = i;
break;
secsymend = i;
- for (; i < symcount; ++i)
- if (strcmp (syms[i]->section->name, ".opd") != 0)
- break;
+ if (opd != NULL)
+ for (; i < symcount; ++i)
+ if (strcmp (syms[i]->section->name, ".opd") != 0)
+ break;
opdsymend = i;
for (; i < symcount; ++i)
}
}
+ if (size == 0)
+ goto done;
s = *ret = bfd_malloc (size);
if (s == NULL)
{
if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents))
{
+ free_contents_and_exit_err:
+ count = -1;
free_contents_and_exit:
if (contents)
free (contents);
- count = -1;
goto done;
}
void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
- goto free_contents_and_exit;
+ goto free_contents_and_exit_err;
extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
{
slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
- goto free_contents_and_exit;
+ goto free_contents_and_exit_err;
plt_count = relplt->size / sizeof (Elf64_External_Rela);
size += plt_count * sizeof (asymbol);
}
}
+ if (size == 0)
+ goto free_contents_and_exit;
s = *ret = bfd_malloc (size);
if (s == NULL)
- goto free_contents_and_exit;
+ goto free_contents_and_exit_err;
names = (char *) (s + count + plt_count + (resolv_vma != 0));
case R_PPC64_TPREL16_HIGHEST:
case R_PPC64_TPREL16_HIGHESTA:
case R_PPC64_TPREL64:
- return !info->executable;
+ return !bfd_link_executable (info);
}
}
ppc_stub_plt_branch_r2off,
ppc_stub_plt_call,
ppc_stub_plt_call_r2save,
- ppc_stub_global_entry
+ ppc_stub_global_entry,
+ ppc_stub_save_res
+};
+
+/* Information on stub grouping. */
+struct map_stub
+{
+ /* The stub section. */
+ asection *stub_sec;
+ /* This is the section to which stubs in the group will be attached. */
+ asection *link_sec;
+ /* Next group. */
+ struct map_stub *next;
+ /* Whether to emit a copy of register save/restore functions in this
+ group. */
+ int needs_save_res;
};
struct ppc_stub_hash_entry {
enum ppc_stub_type stub_type;
- /* The stub section. */
- asection *stub_sec;
+ /* Group information. */
+ struct map_stub *group;
/* Offset within stub_sec of the beginning of this stub. */
bfd_vma stub_offset;
struct ppc_link_hash_entry *h;
struct plt_entry *plt_ent;
- /* Where this stub is being called from, or, in the case of combined
- stub sections, the first input section in the group. */
- asection *id_sec;
-
/* Symbol st_other. */
unsigned char other;
};
/* Track dynamic relocs copied for this symbol. */
struct elf_dyn_relocs *dyn_relocs;
+ /* Chain of aliases referring to a weakdef. */
+ struct ppc_link_hash_entry *weakref;
+
/* Link between function code and descriptor symbols. */
struct ppc_link_hash_entry *oh;
/* Set if we twiddled this symbol to weak at some stage. */
unsigned int was_undefined:1;
+ /* Set if this is an out-of-line register save/restore function,
+ with non-standard calling convention. */
+ unsigned int save_res:1;
+
/* Contexts in which symbol is used in the GOT (or TOC).
TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
corresponding relocs are encountered during check_relocs.
/* Various options and other info passed from the linker. */
struct ppc64_elf_params *params;
- /* Array to keep track of which stub sections have been created, and
- information on stub grouping. */
- struct map_stub {
- /* This is the section to which stubs in the group will be attached. */
- asection *link_sec;
- /* The stub section. */
- asection *stub_sec;
- /* Along with elf_gp, specifies the TOC pointer used in this group. */
+ /* The size of sec_info below. */
+ unsigned int sec_info_arr_size;
+
+ /* Per-section array of extra section info. Done this way rather
+ than as part of ppc64_elf_section_data so we have the info for
+ non-ppc64 sections. */
+ struct
+ {
+ /* Along with elf_gp, specifies the TOC pointer used by this section. */
bfd_vma toc_off;
- } *stub_group;
+
+ union
+ {
+ /* The section group that this section belongs to. */
+ struct map_stub *group;
+ /* A temp section list pointer. */
+ asection *list;
+ } u;
+ } *sec_info;
+
+ /* Linked list of groups. */
+ struct map_stub *group;
/* Temp used when calculating TOC pointers. */
bfd_vma toc_curr;
bfd *toc_bfd;
asection *toc_first_sec;
- /* Highest input section id. */
- int top_id;
-
- /* Highest output section index. */
- int top_index;
-
/* Used when adding symbols. */
struct ppc_link_hash_entry *dot_syms;
- /* List of input sections for each output section. */
- asection **input_list;
-
/* Shortcuts to get to dynamic linker sections. */
asection *dynbss;
asection *relbss;
/* Initialize the local fields. */
eh = (struct ppc_stub_hash_entry *) entry;
eh->stub_type = ppc_stub_none;
- eh->stub_sec = NULL;
+ eh->group = NULL;
eh->stub_offset = 0;
eh->target_value = 0;
eh->target_section = NULL;
eh->h = NULL;
eh->plt_ent = NULL;
- eh->id_sec = NULL;
eh->other = 0;
}
htab = ppc_hash_table (info);
- /* Create .sfpr for code to save and restore fp regs. */
flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
| SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
- htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
- flags);
- if (htab->sfpr == NULL
- || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
- return FALSE;
+ if (htab->params->save_restore_funcs)
+ {
+ /* Create .sfpr for code to save and restore fp regs. */
+ htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
+ flags);
+ if (htab->sfpr == NULL
+ || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
+ return FALSE;
+ }
+
+ if (bfd_link_relocatable (info))
+ return TRUE;
/* Create .glink for lazy dynamic linking support. */
htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
|| ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
return FALSE;
- if (!info->shared)
+ if (!bfd_link_pic (info))
return TRUE;
flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
linker created stub bfd. This ensures that the GOT header is at
the start of the output TOC section. */
htab = ppc_hash_table (info);
- if (htab == NULL)
- return FALSE;
htab->elf.dynobj = params->stub_bfd;
htab->params = params;
- if (info->relocatable)
- return TRUE;
-
return create_linkage_sections (htab->elf.dynobj, info);
}
struct ppc_link_hash_table *htab)
{
struct ppc_stub_hash_entry *stub_entry;
- const asection *id_sec;
+ struct map_stub *group;
/* If this input section is part of a group of sections sharing one
stub section, then use the id of the first section in the group.
Stub names need to include a section id, as there may well be
more than one stub used to reach say, printf, and we need to
distinguish between them. */
- id_sec = htab->stub_group[input_section->id].link_sec;
+ group = htab->sec_info[input_section->id].u.group;
+ if (group == NULL)
+ return NULL;
if (h != NULL && h->u.stub_cache != NULL
&& h->u.stub_cache->h == h
- && h->u.stub_cache->id_sec == id_sec)
+ && h->u.stub_cache->group == group)
{
stub_entry = h->u.stub_cache;
}
{
char *stub_name;
- stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
+ stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel);
if (stub_name == NULL)
return NULL;
struct bfd_link_info *info)
{
struct ppc_link_hash_table *htab = ppc_hash_table (info);
+ struct map_stub *group;
asection *link_sec;
asection *stub_sec;
struct ppc_stub_hash_entry *stub_entry;
- link_sec = htab->stub_group[section->id].link_sec;
- stub_sec = htab->stub_group[section->id].stub_sec;
+ group = htab->sec_info[section->id].u.group;
+ link_sec = group->link_sec;
+ stub_sec = group->stub_sec;
if (stub_sec == NULL)
{
- stub_sec = htab->stub_group[link_sec->id].stub_sec;
- if (stub_sec == NULL)
- {
- size_t namelen;
- bfd_size_type len;
- char *s_name;
+ size_t namelen;
+ bfd_size_type len;
+ char *s_name;
- namelen = strlen (link_sec->name);
- len = namelen + sizeof (STUB_SUFFIX);
- s_name = bfd_alloc (htab->params->stub_bfd, len);
- if (s_name == NULL)
- return NULL;
+ namelen = strlen (link_sec->name);
+ len = namelen + sizeof (STUB_SUFFIX);
+ s_name = bfd_alloc (htab->params->stub_bfd, len);
+ if (s_name == NULL)
+ return NULL;
- memcpy (s_name, link_sec->name, namelen);
- memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
- stub_sec = (*htab->params->add_stub_section) (s_name, link_sec);
- if (stub_sec == NULL)
- return NULL;
- htab->stub_group[link_sec->id].stub_sec = stub_sec;
- }
- htab->stub_group[section->id].stub_sec = stub_sec;
+ memcpy (s_name, link_sec->name, namelen);
+ memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
+ stub_sec = (*htab->params->add_stub_section) (s_name, link_sec);
+ if (stub_sec == NULL)
+ return NULL;
+ group->stub_sec = stub_sec;
}
/* Enter this entry into the linker stub hash table. */
return NULL;
}
- stub_entry->stub_sec = stub_sec;
+ stub_entry->group = group;
stub_entry->stub_offset = 0;
- stub_entry->id_sec = link_sec;
return stub_entry;
}
return FALSE;
htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss");
- if (!info->shared)
+ if (!bfd_link_pic (info))
htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss");
if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss
- || (!info->shared && !htab->relbss))
+ || (!bfd_link_pic (info) && !htab->relbss))
abort ();
return TRUE;
edir->elf.needs_plt |= eind->elf.needs_plt;
edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
+ /* If we were called to copy over info for a weak sym, don't copy
+ dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs
+ in order to simplify readonly_dynrelocs and save a field in the
+ symbol hash entry, but that means dyn_relocs can't be used in any
+ tests about a specific symbol, or affect other symbol flags which
+ are then tested.
+ Chain weakdefs so we can get from the weakdef back to an alias.
+ The list is circular so that we don't need to use u.weakdef as
+ well as this list to look at all aliases. */
+ if (eind->elf.root.type != bfd_link_hash_indirect)
+ {
+ struct ppc_link_hash_entry *cur, *add, *next;
+
+ add = eind;
+ do
+ {
+ cur = edir->weakref;
+ if (cur != NULL)
+ {
+ do
+ {
+ /* We can be called twice for the same symbols.
+ Don't make multiple loops. */
+ if (cur == add)
+ return;
+ cur = cur->weakref;
+ } while (cur != edir);
+ }
+ next = add->weakref;
+ if (cur != add)
+ {
+ add->weakref = edir->weakref != NULL ? edir->weakref : edir;
+ edir->weakref = add;
+ }
+ add = next;
+ } while (add != NULL && add != eind);
+ return;
+ }
+
/* Copy over any dynamic relocs we may have on the indirect sym. */
if (eind->dyn_relocs != NULL)
{
eind->dyn_relocs = NULL;
}
- /* If we were called to copy over info for a weak sym, that's all.
- You might think dyn_relocs need not be copied over; After all,
- both syms will be dynamic or both non-dynamic so we're just
- moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
- code in ppc64_elf_adjust_dynamic_symbol needs to check for
- dyn_relocs in read-only sections, and it does so on what is the
- DIR sym here. */
- if (eind->elf.root.type != bfd_link_hash_indirect)
- return;
-
/* Copy over got entries that we may have already seen to the
symbol which just became indirect. */
if (eind->elf.got.glist != NULL)
const char **name,
flagword *flags ATTRIBUTE_UNUSED,
asection **sec,
- bfd_vma *value ATTRIBUTE_UNUSED)
+ bfd_vma *value)
{
- if ((ibfd->flags & DYNAMIC) == 0
- && ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
- elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
+ if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
+ && (ibfd->flags & DYNAMIC) == 0
+ && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
+ elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
- if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
+ if (*sec != NULL
+ && strcmp ((*sec)->name, ".opd") == 0)
{
- if ((ibfd->flags & DYNAMIC) == 0)
- elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
+ asection *code_sec;
+
+ if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
+ || ELF_ST_TYPE (isym->st_info) == STT_FUNC))
+ isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
+
+ /* If the symbol is a function defined in .opd, and the function
+ code is in a discarded group, let it appear to be undefined. */
+ if (!bfd_link_relocatable (info)
+ && (*sec)->reloc_count != 0
+ && opd_entry_value (*sec, *value, &code_sec, NULL,
+ FALSE) != (bfd_vma) -1
+ && discarded_section (code_sec))
+ {
+ *sec = bfd_und_section_ptr;
+ isym->st_shndx = SHN_UNDEF;
+ }
}
- else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC)
- ;
else if (*sec != NULL
- && strcmp ((*sec)->name, ".opd") == 0)
- isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
+ && strcmp ((*sec)->name, ".toc") == 0
+ && ELF_ST_TYPE (isym->st_info) == STT_OBJECT)
+ {
+ struct ppc_link_hash_table *htab = ppc_hash_table (info);
+ if (htab != NULL)
+ htab->params->object_in_toc = 1;
+ }
if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
{
fdh = lookup_fdh (eh, htab);
if (fdh == NULL)
{
- if (!info->relocatable
+ if (!bfd_link_relocatable (info)
&& (eh->elf.root.type == bfd_link_hash_undefined
|| eh->elf.root.type == bfd_link_hash_undefweak)
&& eh->elf.ref_regular)
{
struct ppc_link_hash_table *htab;
struct ppc_link_hash_entry **p, *eh;
+ asection *opd = bfd_get_section_by_name (ibfd, ".opd");
- if (!is_ppc64_elf (info->output_bfd))
- return TRUE;
- htab = ppc_hash_table (info);
- if (htab == NULL)
- return FALSE;
-
- if (is_ppc64_elf (ibfd))
+ if (opd != NULL && opd->size != 0)
{
- asection *opd = bfd_get_section_by_name (ibfd, ".opd");
-
- if (opd != NULL && opd->size != 0)
+ if (abiversion (ibfd) == 0)
+ set_abiversion (ibfd, 1);
+ else if (abiversion (ibfd) >= 2)
{
- if (abiversion (ibfd) == 0)
- set_abiversion (ibfd, 1);
- else if (abiversion (ibfd) == 2)
- {
- info->callbacks->einfo (_("%P: %B .opd not allowed in ABI"
- " version %d\n"),
- ibfd, abiversion (ibfd));
- bfd_set_error (bfd_error_bad_value);
- return FALSE;
- }
-
- if ((ibfd->flags & DYNAMIC) == 0
- && (opd->flags & SEC_RELOC) != 0
- && opd->reloc_count != 0
- && !bfd_is_abs_section (opd->output_section))
- {
- /* Garbage collection needs some extra help with .opd sections.
- We don't want to necessarily keep everything referenced by
- relocs in .opd, as that would keep all functions. Instead,
- if we reference an .opd symbol (a function descriptor), we
- want to keep the function code symbol's section. This is
- easy for global symbols, but for local syms we need to keep
- information about the associated function section. */
- bfd_size_type amt;
- asection **opd_sym_map;
-
- amt = opd->size * sizeof (*opd_sym_map) / 8;
- opd_sym_map = bfd_zalloc (ibfd, amt);
- if (opd_sym_map == NULL)
- return FALSE;
- ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
- BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
- ppc64_elf_section_data (opd)->sec_type = sec_opd;
- }
+ info->callbacks->einfo (_("%P: %B .opd not allowed in ABI"
+ " version %d\n"),
+ ibfd, abiversion (ibfd));
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
}
- /* For input files without an explicit abiversion in e_flags
- we should have flagged any with symbol st_other bits set
- as ELFv1 and above flagged those with .opd as ELFv2.
- Set the output abiversion if not yet set, and for any input
- still ambiguous, take its abiversion from the output.
- Differences in ABI are reported later. */
- if (abiversion (info->output_bfd) == 0)
- set_abiversion (info->output_bfd, abiversion (ibfd));
- else if (abiversion (ibfd) == 0)
- set_abiversion (ibfd, abiversion (info->output_bfd));
-
- p = &htab->dot_syms;
- while ((eh = *p) != NULL)
+ if ((ibfd->flags & DYNAMIC) == 0
+ && (opd->flags & SEC_RELOC) != 0
+ && opd->reloc_count != 0
+ && !bfd_is_abs_section (opd->output_section))
{
- *p = NULL;
- if (&eh->elf == htab->elf.hgot)
- ;
- else if (htab->elf.hgot == NULL
- && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
- htab->elf.hgot = &eh->elf;
- else if (!add_symbol_adjust (eh, info))
+ /* Garbage collection needs some extra help with .opd sections.
+ We don't want to necessarily keep everything referenced by
+ relocs in .opd, as that would keep all functions. Instead,
+ if we reference an .opd symbol (a function descriptor), we
+ want to keep the function code symbol's section. This is
+ easy for global symbols, but for local syms we need to keep
+ information about the associated function section. */
+ bfd_size_type amt;
+ asection **opd_sym_map;
+
+ amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map);
+ opd_sym_map = bfd_zalloc (ibfd, amt);
+ if (opd_sym_map == NULL)
return FALSE;
- p = &eh->u.next_dot_sym;
+ ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
+ BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
+ ppc64_elf_section_data (opd)->sec_type = sec_opd;
}
}
+ if (!is_ppc64_elf (info->output_bfd))
+ return TRUE;
+ htab = ppc_hash_table (info);
+ if (htab == NULL)
+ return FALSE;
+
+ /* For input files without an explicit abiversion in e_flags
+ we should have flagged any with symbol st_other bits set
+ as ELFv1 and above flagged those with .opd as ELFv2.
+ Set the output abiversion if not yet set, and for any input
+ still ambiguous, take its abiversion from the output.
+ Differences in ABI are reported later. */
+ if (abiversion (info->output_bfd) == 0)
+ set_abiversion (info->output_bfd, abiversion (ibfd));
+ else if (abiversion (ibfd) == 0)
+ set_abiversion (ibfd, abiversion (info->output_bfd));
+
+ p = &htab->dot_syms;
+ while ((eh = *p) != NULL)
+ {
+ *p = NULL;
+ if (&eh->elf == htab->elf.hgot)
+ ;
+ else if (htab->elf.hgot == NULL
+ && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
+ htab->elf.hgot = &eh->elf;
+ else if (!add_symbol_adjust (eh, info))
+ return FALSE;
+ p = &eh->u.next_dot_sym;
+ }
+
/* Clear the list for non-ppc64 input files. */
p = &htab->dot_syms;
while ((eh = *p) != NULL)
}
/* We need to fix the undefs list for any syms we have twiddled to
- undef_weak. */
+ undefweak. */
if (htab->twiddled_syms)
{
bfd_link_repair_undef_list (&htab->elf.root);
asection **opd_sym_map;
struct elf_link_hash_entry *tga, *dottga;
- if (info->relocatable)
+ if (bfd_link_relocatable (info))
return TRUE;
/* Don't do anything special with non-loaded, non-alloced sections.
enum elf_ppc64_reloc_type r_type;
int tls_type;
struct _ppc64_elf_section_data *ppc64_sec;
- struct plt_entry **ifunc;
+ struct plt_entry **ifunc, **plt_list;
r_symndx = ELF64_R_SYM (rel->r_info);
if (r_symndx < symtab_hdr->sh_info)
return FALSE;
}
}
- r_type = ELF64_R_TYPE (rel->r_info);
- if (is_branch_reloc (r_type))
- {
- if (h != NULL && (h == tga || h == dottga))
- {
- if (rel != relocs
- && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
- || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
- /* We have a new-style __tls_get_addr call with a marker
- reloc. */
- ;
- else
- /* Mark this section as having an old-style call. */
- sec->has_tls_get_addr_call = 1;
- }
-
- /* STT_GNU_IFUNC symbols must have a PLT entry. */
- if (ifunc != NULL
- && !update_plt_info (abfd, ifunc, rel->r_addend))
- return FALSE;
- }
+ r_type = ELF64_R_TYPE (rel->r_info);
switch (r_type)
{
case R_PPC64_TLSGD:
case R_PPC64_GOT_TPREL16_LO_DS:
case R_PPC64_GOT_TPREL16_HI:
case R_PPC64_GOT_TPREL16_HA:
- if (info->shared)
+ if (bfd_link_pic (info))
info->flags |= DF_STATIC_TLS;
tls_type = TLS_TLS | TLS_TPREL;
goto dogottls;
/* We may also need a plt entry if the symbol turns out to be
an ifunc. */
- if (h != NULL && !info->shared && abiversion (abfd) != 1)
+ if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1)
{
if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
return FALSE;
case R_PPC64_PLT16_LO:
case R_PPC64_PLT32:
case R_PPC64_PLT64:
- /* This symbol requires a procedure linkage table entry. We
- actually build the entry in adjust_dynamic_symbol,
- because this might be a case of linking PIC code without
- linking in any dynamic objects, in which case we don't
- need to generate a procedure linkage table after all. */
- if (h == NULL)
- {
- /* It does not make sense to have a procedure linkage
- table entry for a local symbol. */
- bfd_set_error (bfd_error_bad_value);
- return FALSE;
- }
- else
+ /* This symbol requires a procedure linkage table entry. */
+ plt_list = ifunc;
+ if (h != NULL)
{
- if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
- return FALSE;
h->needs_plt = 1;
if (h->root.root.string[0] == '.'
&& h->root.root.string[1] != '\0')
((struct ppc_link_hash_entry *) h)->is_func = 1;
+ plt_list = &h->plt.plist;
+ }
+ if (plt_list == NULL)
+ {
+ /* It does not make sense to have a procedure linkage
+ table entry for a non-ifunc local symbol. */
+ info->callbacks->einfo
+ (_("%P: %H: %s reloc against local symbol\n"),
+ abfd, sec, rel->r_offset,
+ ppc64_elf_howto_table[r_type]->name);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
}
+ if (!update_plt_info (abfd, plt_list, rel->r_addend))
+ return FALSE;
break;
/* The following relocations don't need to propagate the
case R_PPC64_REL16_LO:
case R_PPC64_REL16_HI:
case R_PPC64_REL16_HA:
+ case R_PPC64_REL16DX_HA:
break;
/* Not supported as a dynamic relocation. */
case R_PPC64_ADDR64_LOCAL:
- if (info->shared)
+ if (bfd_link_pic (info))
{
if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
ppc_howto_init ();
sec->has_toc_reloc = 1;
break;
+ /* Marker reloc. */
+ case R_PPC64_ENTRY:
+ break;
+
/* This relocation describes the C++ object vtable hierarchy.
Reconstruct it for later use during GC. */
case R_PPC64_GNU_VTINHERIT:
/* Fall through. */
case R_PPC64_REL24:
- if (h != NULL && ifunc == NULL)
+ plt_list = ifunc;
+ if (h != NULL)
{
- /* We may need a .plt entry if the function this reloc
- refers to is in a shared lib. */
- if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
- return FALSE;
h->needs_plt = 1;
if (h->root.root.string[0] == '.'
&& h->root.root.string[1] != '\0')
((struct ppc_link_hash_entry *) h)->is_func = 1;
+
if (h == tga || h == dottga)
- sec->has_tls_reloc = 1;
+ {
+ sec->has_tls_reloc = 1;
+ if (rel != relocs
+ && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
+ || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
+ /* We have a new-style __tls_get_addr call with
+ a marker reloc. */
+ ;
+ else
+ /* Mark this section as having an old-style call. */
+ sec->has_tls_get_addr_call = 1;
+ }
+ plt_list = &h->plt.plist;
}
+
+ /* We may need a .plt entry if the function this reloc
+ refers to is in a shared lib. */
+ if (plt_list
+ && !update_plt_info (abfd, plt_list, rel->r_addend))
+ return FALSE;
break;
+ case R_PPC64_ADDR14:
+ case R_PPC64_ADDR14_BRNTAKEN:
+ case R_PPC64_ADDR14_BRTAKEN:
+ case R_PPC64_ADDR24:
+ goto dodyn;
+
case R_PPC64_TPREL64:
tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
- if (info->shared)
+ if (bfd_link_pic (info))
info->flags |= DF_STATIC_TLS;
goto dotlstoc;
case R_PPC64_TPREL16_HIGHERA:
case R_PPC64_TPREL16_HIGHEST:
case R_PPC64_TPREL16_HIGHESTA:
- if (info->shared)
+ if (bfd_link_pic (info))
{
info->flags |= DF_STATIC_TLS;
goto dodyn;
s = bfd_section_from_elf_index (abfd, isym->st_shndx);
if (s != NULL && s != sec)
- opd_sym_map[rel->r_offset / 8] = s;
+ opd_sym_map[OPD_NDX (rel->r_offset)] = s;
}
}
/* Fall through. */
case R_PPC64_ADDR16_HIGHESTA:
case R_PPC64_ADDR16_LO:
case R_PPC64_ADDR16_LO_DS:
- if (h != NULL && !info->shared && abiversion (abfd) != 1
+ if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1
&& rel->r_addend == 0)
{
/* We may need a .plt entry if this reloc refers to a
case R_PPC64_REL30:
case R_PPC64_REL32:
case R_PPC64_REL64:
- case R_PPC64_ADDR14:
- case R_PPC64_ADDR14_BRNTAKEN:
- case R_PPC64_ADDR14_BRTAKEN:
- case R_PPC64_ADDR24:
case R_PPC64_ADDR32:
case R_PPC64_UADDR16:
case R_PPC64_UADDR32:
case R_PPC64_UADDR64:
case R_PPC64_TOC:
- if (h != NULL && !info->shared)
+ if (h != NULL && !bfd_link_pic (info))
/* We may need a copy reloc. */
h->non_got_ref = 1;
dynamic library if we manage to avoid copy relocs for the
symbol. */
dodyn:
- if ((info->shared
+ if ((bfd_link_pic (info)
&& (must_be_dyn_reloc (info, r_type)
|| (h != NULL
&& (!SYMBOLIC_BIND (info, h)
|| h->root.type == bfd_link_hash_defweak
|| !h->def_regular))))
|| (ELIMINATE_COPY_RELOCS
- && !info->shared
+ && !bfd_link_pic (info)
&& h != NULL
&& (h->root.type == bfd_link_hash_defweak
|| !h->def_regular))
- || (!info->shared
+ || (!bfd_link_pic (info)
&& ifunc != NULL))
{
/* We must copy these reloc types into the output file.
if (iflags & ~EF_PPC64_ABI)
{
- (*_bfd_error_handler)
+ _bfd_error_handler
(_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
else if (iflags != oflags && iflags != 0)
{
- (*_bfd_error_handler)
+ _bfd_error_handler
(_("%B: ABI version %ld is not compatible with ABI version %ld output"),
ibfd, iflags, oflags);
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
+ _bfd_elf_ppc_merge_fp_attributes (ibfd, obfd);
+
/* Merge Tag_compatibility attributes and any common GNU ones. */
_bfd_elf_merge_object_attributes (ibfd, obfd);
}
/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
- of the code entry point, and its section. */
+ of the code entry point, and its section, which must be in the same
+ object as OPD_SEC. Returns (bfd_vma) -1 on error. */
static bfd_vma
opd_entry_value (asection *opd_sec,
ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
}
+ /* PR 17512: file: 64b9dfbb. */
+ if (offset + 7 >= opd_sec->size || offset + 7 < offset)
+ return (bfd_vma) -1;
+
val = bfd_get_64 (opd_bfd, contents + offset);
if (code_sec != NULL)
{
relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
if (relocs == NULL)
relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
+ /* PR 17512: file: df8e1fd6. */
+ if (relocs == NULL)
+ return (bfd_vma) -1;
/* Go find the opd reloc at the sym address. */
lo = relocs;
- BFD_ASSERT (lo != NULL);
hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
val = (bfd_vma) -1;
while (lo < hi)
&& ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
{
unsigned long symndx = ELF64_R_SYM (look->r_info);
- asection *sec;
-
- if (symndx < symtab_hdr->sh_info
- || elf_sym_hashes (opd_bfd) == NULL)
- {
- Elf_Internal_Sym *sym;
+ asection *sec = NULL;
- sym = (Elf_Internal_Sym *) symtab_hdr->contents;
- if (sym == NULL)
- {
- size_t symcnt = symtab_hdr->sh_info;
- if (elf_sym_hashes (opd_bfd) == NULL)
- symcnt = symtab_hdr->sh_size / symtab_hdr->sh_entsize;
- sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, symcnt,
- 0, NULL, NULL, NULL);
- if (sym == NULL)
- break;
- symtab_hdr->contents = (bfd_byte *) sym;
- }
-
- sym += symndx;
- val = sym->st_value;
- sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
- BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
- }
- else
+ if (symndx >= symtab_hdr->sh_info
+ && elf_sym_hashes (opd_bfd) != NULL)
{
struct elf_link_hash_entry **sym_hashes;
struct elf_link_hash_entry *rh;
if (rh != NULL)
{
rh = elf_follow_link (rh);
- BFD_ASSERT (rh->root.type == bfd_link_hash_defined
- || rh->root.type == bfd_link_hash_defweak);
- val = rh->root.u.def.value;
- sec = rh->root.u.def.section;
+ if (rh->root.type != bfd_link_hash_defined
+ && rh->root.type != bfd_link_hash_defweak)
+ break;
+ if (rh->root.u.def.section->owner == opd_bfd)
+ {
+ val = rh->root.u.def.value;
+ sec = rh->root.u.def.section;
+ }
+ }
+ }
+
+ if (sec == NULL)
+ {
+ Elf_Internal_Sym *sym;
+
+ if (symndx < symtab_hdr->sh_info)
+ {
+ sym = (Elf_Internal_Sym *) symtab_hdr->contents;
+ if (sym == NULL)
+ {
+ size_t symcnt = symtab_hdr->sh_info;
+ sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
+ symcnt, 0,
+ NULL, NULL, NULL);
+ if (sym == NULL)
+ break;
+ symtab_hdr->contents = (bfd_byte *) sym;
+ }
+ sym += symndx;
}
else
{
- /* Handle the odd case where we can be called
- during bfd_elf_link_add_symbols before the
- symbol hashes have been fully populated. */
- Elf_Internal_Sym *sym;
-
- sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, 1,
- symndx, NULL, NULL, NULL);
+ sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
+ 1, symndx,
+ NULL, NULL, NULL);
if (sym == NULL)
break;
-
- val = sym->st_value;
- sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
- free (sym);
}
+ sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
+ if (sec == NULL)
+ break;
+ BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
+ val = sym->st_value;
}
+
val += look->r_addend;
if (code_off != NULL)
*code_off = val;
else
*code_sec = sec;
}
- if (sec != NULL && sec->output_section != NULL)
+ if (sec->output_section != NULL)
val += sec->output_section->vma + sec->output_offset;
}
break;
if (strcmp (sym->section->name, ".opd") == 0)
{
- if (opd_entry_value (sym->section, sym->value,
+ struct _opd_sec_data *opd = get_opd_info (sym->section);
+ bfd_vma symval = sym->value;
+
+ if (opd != NULL
+ && opd->adjust != NULL
+ && elf_section_data (sym->section)->relocs != NULL)
+ {
+ /* opd_entry_value will use cached relocs that have been
+ adjusted, but with raw symbols. That means both local
+ and global symbols need adjusting. */
+ long adjust = opd->adjust[OPD_NDX (symval)];
+ if (adjust == -1)
+ return 0;
+ symval += adjust;
+ }
+
+ if (opd_entry_value (sym->section, symval,
&sec, code_off, TRUE) == (bfd_vma) -1)
return 0;
/* An old ABI binary with dot-syms has a size of 24 on the .opd
if ((eh->elf.root.type == bfd_link_hash_defined
|| eh->elf.root.type == bfd_link_hash_defweak)
&& (eh->elf.ref_dynamic
- || (eh->elf.def_regular
+ || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf))
&& ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
&& ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
- && (!info->executable
+ && (!bfd_link_executable (info)
|| info->export_dynamic
|| (eh->elf.dynamic
&& d != NULL
{
rsec->gc_mark = 1;
- rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
+ rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)];
}
}
struct got_entry **local_got_ents;
const Elf_Internal_Rela *rel, *relend;
- if (info->relocatable)
+ if (bfd_link_relocatable (info))
return TRUE;
if ((sec->flags & SEC_ALLOC) == 0)
unsigned long r_symndx;
enum elf_ppc64_reloc_type r_type;
struct elf_link_hash_entry *h = NULL;
+ struct plt_entry **plt_list;
unsigned char tls_type = 0;
r_symndx = ELF64_R_SYM (rel->r_info);
}
}
- if (is_branch_reloc (r_type))
- {
- struct plt_entry **ifunc = NULL;
- if (h != NULL)
- {
- if (h->type == STT_GNU_IFUNC)
- ifunc = &h->plt.plist;
- }
- else if (local_got_ents != NULL)
- {
- struct plt_entry **local_plt = (struct plt_entry **)
- (local_got_ents + symtab_hdr->sh_info);
- unsigned char *local_got_tls_masks = (unsigned char *)
- (local_plt + symtab_hdr->sh_info);
- if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
- ifunc = local_plt + r_symndx;
- }
- if (ifunc != NULL)
- {
- struct plt_entry *ent;
-
- for (ent = *ifunc; ent != NULL; ent = ent->next)
- if (ent->addend == rel->r_addend)
- break;
- if (ent == NULL)
- abort ();
- if (ent->plt.refcount > 0)
- ent->plt.refcount -= 1;
- continue;
- }
- }
-
- switch (r_type)
+ switch (r_type)
{
case R_PPC64_GOT_TLSLD16:
case R_PPC64_GOT_TLSLD16_LO:
case R_PPC64_REL14_BRNTAKEN:
case R_PPC64_REL14_BRTAKEN:
case R_PPC64_REL24:
+ plt_list = NULL;
if (h != NULL)
+ plt_list = &h->plt.plist;
+ else if (local_got_ents != NULL)
+ {
+ struct plt_entry **local_plt = (struct plt_entry **)
+ (local_got_ents + symtab_hdr->sh_info);
+ unsigned char *local_got_tls_masks = (unsigned char *)
+ (local_plt + symtab_hdr->sh_info);
+ if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
+ plt_list = local_plt + r_symndx;
+ }
+ if (plt_list)
{
struct plt_entry *ent;
- for (ent = h->plt.plist; ent != NULL; ent = ent->next)
+ for (ent = *plt_list; ent != NULL; ent = ent->next)
if (ent->addend == rel->r_addend)
break;
if (ent != NULL && ent->plt.refcount > 0)
bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
};
-/* Auto-generate _save*, _rest* functions in .sfpr. */
+/* Auto-generate _save*, _rest* functions in .sfpr.
+ If STUB_SEC is non-null, define alias symbols in STUB_SEC
+ instead. */
static bfd_boolean
-sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
+sfpr_define (struct bfd_link_info *info,
+ const struct sfpr_def_parms *parm,
+ asection *stub_sec)
{
struct ppc_link_hash_table *htab = ppc_hash_table (info);
unsigned int i;
for (i = parm->lo; i <= parm->hi; i++)
{
- struct elf_link_hash_entry *h;
+ struct ppc_link_hash_entry *h;
sym[len + 0] = i / 10 + '0';
sym[len + 1] = i % 10 + '0';
- h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
- if (h != NULL
- && !h->def_regular)
+ h = (struct ppc_link_hash_entry *)
+ elf_link_hash_lookup (&htab->elf, sym, writing, TRUE, TRUE);
+ if (stub_sec != NULL)
{
- h->root.type = bfd_link_hash_defined;
- h->root.u.def.section = htab->sfpr;
- h->root.u.def.value = htab->sfpr->size;
- h->type = STT_FUNC;
- h->def_regular = 1;
- _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
- writing = TRUE;
- if (htab->sfpr->contents == NULL)
+ if (h != NULL
+ && h->elf.root.type == bfd_link_hash_defined
+ && h->elf.root.u.def.section == htab->sfpr)
{
- htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
- if (htab->sfpr->contents == NULL)
+ struct elf_link_hash_entry *s;
+ char buf[32];
+ sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym);
+ s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE);
+ if (s == NULL)
return FALSE;
+ if (s->root.type == bfd_link_hash_new
+ || (s->root.type = bfd_link_hash_defined
+ && s->root.u.def.section == stub_sec))
+ {
+ s->root.type = bfd_link_hash_defined;
+ s->root.u.def.section = stub_sec;
+ s->root.u.def.value = (stub_sec->size
+ + h->elf.root.u.def.value);
+ s->ref_regular = 1;
+ s->def_regular = 1;
+ s->ref_regular_nonweak = 1;
+ s->forced_local = 1;
+ s->non_elf = 0;
+ s->root.linker_def = 1;
+ }
+ }
+ continue;
+ }
+ if (h != NULL)
+ {
+ h->save_res = 1;
+ if (!h->elf.def_regular)
+ {
+ h->elf.root.type = bfd_link_hash_defined;
+ h->elf.root.u.def.section = htab->sfpr;
+ h->elf.root.u.def.value = htab->sfpr->size;
+ h->elf.type = STT_FUNC;
+ h->elf.def_regular = 1;
+ h->elf.non_elf = 0;
+ _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE);
+ writing = TRUE;
+ if (htab->sfpr->contents == NULL)
+ {
+ htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
+ if (htab->sfpr->contents == NULL)
+ return FALSE;
+ }
}
}
if (writing)
fdh = lookup_fdh (fh, htab);
if (fdh == NULL
- && !info->executable
+ && !bfd_link_executable (info)
&& (fh->elf.root.type == bfd_link_hash_undefined
|| fh->elf.root.type == bfd_link_hash_undefweak))
{
if (fdh != NULL
&& !fdh->elf.forced_local
- && (!info->executable
+ && (!bfd_link_executable (info)
|| fdh->elf.def_dynamic
|| fdh->elf.ref_dynamic
|| (fdh->elf.root.type == bfd_link_hash_undefweak
return TRUE;
}
+static const struct sfpr_def_parms save_res_funcs[] =
+ {
+ { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
+ { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
+ { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
+ { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
+ { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
+ { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
+ { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
+ { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
+ { "._savef", 14, 31, savefpr, savefpr1_tail },
+ { "._restf", 14, 31, restfpr, restfpr1_tail },
+ { "_savevr_", 20, 31, savevr, savevr_tail },
+ { "_restvr_", 20, 31, restvr, restvr_tail }
+ };
+
/* Called near the start of bfd_elf_size_dynamic_sections. We use
this hook to a) provide some gcc support functions, and b) transfer
dynamic linking information gathered so far on function code symbol
struct bfd_link_info *info)
{
struct ppc_link_hash_table *htab;
- unsigned int i;
- static const struct sfpr_def_parms funcs[] =
- {
- { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
- { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
- { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
- { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
- { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
- { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
- { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
- { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
- { "._savef", 14, 31, savefpr, savefpr1_tail },
- { "._restf", 14, 31, restfpr, restfpr1_tail },
- { "_savevr_", 20, 31, savevr, savevr_tail },
- { "_restvr_", 20, 31, restvr, restvr_tail }
- };
htab = ppc_hash_table (info);
if (htab == NULL)
return FALSE;
- if (!info->relocatable
- && htab->elf.hgot != NULL)
+ /* Provide any missing _save* and _rest* functions. */
+ if (htab->sfpr != NULL)
+ {
+ unsigned int i;
+
+ htab->sfpr->size = 0;
+ for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++)
+ if (!sfpr_define (info, &save_res_funcs[i], NULL))
+ return FALSE;
+ if (htab->sfpr->size == 0)
+ htab->sfpr->flags |= SEC_EXCLUDE;
+ }
+
+ if (bfd_link_relocatable (info))
+ return TRUE;
+
+ if (htab->elf.hgot != NULL)
{
_bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
/* Make .TOC. defined so as to prevent it being made dynamic.
The wrong value here is fixed later in ppc64_elf_set_toc. */
+ if (!htab->elf.hgot->def_regular
+ || htab->elf.hgot->root.type != bfd_link_hash_defined)
+ {
+ htab->elf.hgot->root.type = bfd_link_hash_defined;
+ htab->elf.hgot->root.u.def.value = 0;
+ htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
+ htab->elf.hgot->def_regular = 1;
+ htab->elf.hgot->root.linker_def = 1;
+ }
htab->elf.hgot->type = STT_OBJECT;
- htab->elf.hgot->root.type = bfd_link_hash_defined;
- htab->elf.hgot->root.u.def.value = 0;
- htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
- htab->elf.hgot->def_regular = 1;
htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
| STV_HIDDEN);
}
- if (htab->sfpr == NULL)
- /* We don't have any relocs. */
- return TRUE;
-
- /* Provide any missing _save* and _rest* functions. */
- htab->sfpr->size = 0;
- if (htab->params->save_restore_funcs)
- for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
- if (!sfpr_define (info, &funcs[i]))
- return FALSE;
-
elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
- if (htab->sfpr->size == 0)
- htab->sfpr->flags |= SEC_EXCLUDE;
-
return TRUE;
}
-/* Return true if we have dynamic relocs that apply to read-only sections. */
+/* Return true if we have dynamic relocs against H that apply to
+ read-only sections. */
static bfd_boolean
readonly_dynrelocs (struct elf_link_hash_entry *h)
return FALSE;
}
+/* Return true if we have dynamic relocs against H or any of its weak
+ aliases, that apply to read-only sections. */
+
+static bfd_boolean
+alias_readonly_dynrelocs (struct elf_link_hash_entry *h)
+{
+ struct ppc_link_hash_entry *eh;
+
+ eh = (struct ppc_link_hash_entry *) h;
+ do
+ {
+ if (readonly_dynrelocs (&eh->elf))
+ return TRUE;
+ eh = eh->weakref;
+ } while (eh != NULL && &eh->elf != h);
+
+ return FALSE;
+}
+
+/* Return whether EH has pc-relative dynamic relocs. */
+
+static bfd_boolean
+pc_dynrelocs (struct ppc_link_hash_entry *eh)
+{
+ struct elf_dyn_relocs *p;
+
+ for (p = eh->dyn_relocs; p != NULL; p = p->next)
+ if (p->pc_count != 0)
+ return TRUE;
+ return FALSE;
+}
+
+/* Return true if a global entry stub will be created for H. Valid
+ for ELFv2 before plt entries have been allocated. */
+
+static bfd_boolean
+global_entry_stub (struct elf_link_hash_entry *h)
+{
+ struct plt_entry *pent;
+
+ if (!h->pointer_equality_needed
+ || h->def_regular)
+ return FALSE;
+
+ for (pent = h->plt.plist; pent != NULL; pent = pent->next)
+ if (pent->plt.refcount > 0
+ && pent->addend == 0)
+ return TRUE;
+
+ return FALSE;
+}
+
/* Adjust a symbol defined by a dynamic object and referenced by a
regular object. The current definition is in some section of the
dynamic object, but we're not including those sections. We have to
|| (h->type != STT_GNU_IFUNC
&& (SYMBOL_CALLS_LOCAL (info, h)
|| (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
- && h->root.type == bfd_link_hash_undefweak))))
+ && h->root.type == bfd_link_hash_undefweak)))
+ || ((struct ppc_link_hash_entry *) h)->save_res)
{
h->plt.plist = NULL;
h->needs_plt = 0;
h->pointer_equality_needed = 0;
}
- else if (abiversion (info->output_bfd) == 2)
+ else if (abiversion (info->output_bfd) >= 2)
{
/* Taking a function's address in a read/write section
doesn't require us to define the function symbol in the
executable on a global entry stub. A dynamic reloc can
- be used instead. */
- if (h->pointer_equality_needed
- && !readonly_dynrelocs (h))
+ be used instead. The reason we prefer a few more dynamic
+ relocs is that calling via a global entry stub costs a
+ few more instructions, and pointer_equality_needed causes
+ extra work in ld.so when resolving these symbols. */
+ if (global_entry_stub (h)
+ && !alias_readonly_dynrelocs (h))
{
h->pointer_equality_needed = 0;
+ /* After adjust_dynamic_symbol, non_got_ref set in
+ the non-pic case means that dyn_relocs for this
+ symbol should be discarded. */
h->non_got_ref = 0;
}
- /* After adjust_dynamic_symbol, non_got_ref set in the
- non-shared case means that we have allocated space in
- .dynbss for the symbol and thus dyn_relocs for this
- symbol should be discarded.
- If we get here we know we are making a PLT entry for this
- symbol, and in an executable we'd normally resolve
- relocations against this symbol to the PLT entry. Allow
- dynamic relocs if the reference is weak, and the dynamic
- relocs will not cause text relocation. */
- else if (!h->ref_regular_nonweak
- && h->non_got_ref
- && h->type != STT_GNU_IFUNC
- && !readonly_dynrelocs (h))
- h->non_got_ref = 0;
-
/* If making a plt entry, then we don't need copy relocs. */
return TRUE;
}
only references to the symbol are via the global offset table.
For such cases we need not do anything here; the relocations will
be handled correctly by relocate_section. */
- if (info->shared)
+ if (bfd_link_pic (info))
return TRUE;
/* If there are no references to this symbol that do not use the
return TRUE;
/* Don't generate a copy reloc for symbols defined in the executable. */
- if (!h->def_dynamic || !h->ref_regular || h->def_regular)
- return TRUE;
+ if (!h->def_dynamic || !h->ref_regular || h->def_regular
+
+ /* If -z nocopyreloc was given, don't generate them either. */
+ || info->nocopyreloc
- /* If we didn't find any dynamic relocs in read-only sections, then
- we'll be keeping the dynamic relocs and avoiding the copy reloc. */
- if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
+ /* If we didn't find any dynamic relocs in read-only sections, then
+ we'll be keeping the dynamic relocs and avoiding the copy reloc. */
+ || (ELIMINATE_COPY_RELOCS && !alias_readonly_dynrelocs (h))
+
+ /* Protected variables do not work with .dynbss. The copy in
+ .dynbss won't be used by the shared library with the protected
+ definition for the variable. Text relocations are preferable
+ to an incorrect program. */
+ || h->protected_def)
{
h->non_got_ref = 0;
return TRUE;
s = htab->dynbss;
- return _bfd_elf_adjust_dynamic_copy (h, s);
+ return _bfd_elf_adjust_dynamic_copy (info, h, s);
}
/* If given a function descriptor symbol, hide both the function code
return NULL;
if (ent.sec == NULL || ent.sec->output_section == NULL)
{
- (*_bfd_error_handler)
+ _bfd_error_handler
(_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
return NULL;
}
opd = get_opd_info (sym_sec);
if (opd != NULL && opd->adjust != NULL)
{
- long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
+ long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)];
if (adjust == -1)
{
/* This entry has been deleted. */
case R_PPC64_TPREL16_HIGHERA:
case R_PPC64_TPREL16_HIGHEST:
case R_PPC64_TPREL16_HIGHESTA:
- if (!info->shared)
+ if (!bfd_link_pic (info))
return TRUE;
case R_PPC64_TPREL64:
return FALSE;
}
- if ((info->shared
+ if ((bfd_link_pic (info)
&& (must_be_dyn_reloc (info, r_type)
|| (h != NULL
&& (!SYMBOLIC_BIND (info, h)
|| h->root.type == bfd_link_hash_defweak
|| !h->def_regular))))
|| (ELIMINATE_COPY_RELOCS
- && !info->shared
+ && !bfd_link_pic (info)
&& h != NULL
&& (h->root.type == bfd_link_hash_defweak
|| !h->def_regular)))
Elf_Internal_Rela *relstart, *rel, *relend;
Elf_Internal_Shdr *symtab_hdr;
Elf_Internal_Sym *local_syms;
- bfd_vma offset;
struct _opd_sec_data *opd;
- bfd_boolean need_edit, add_aux_fields;
+ bfd_boolean need_edit, add_aux_fields, broken;
bfd_size_type cnt_16b = 0;
if (!is_ppc64_elf (ibfd))
/* First run through the relocs to check they are sane, and to
determine whether we need to edit this opd section. */
need_edit = FALSE;
+ broken = FALSE;
need_pad = sec;
- offset = 0;
relend = relstart + sec->reloc_count;
for (rel = relstart; rel < relend; )
{
asection *sym_sec;
struct elf_link_hash_entry *h;
Elf_Internal_Sym *sym;
+ bfd_vma offset;
- /* .opd contains a regular array of 16 or 24 byte entries. We're
+ /* .opd contains an array of 16 or 24 byte entries. We're
only interested in the reloc pointing to a function entry
point. */
- if (rel->r_offset != offset
- || rel + 1 >= relend
- || (rel + 1)->r_offset != offset + 8)
+ offset = rel->r_offset;
+ if (rel + 1 == relend
+ || rel[1].r_offset != offset + 8)
{
/* If someone messes with .opd alignment then after a
"ld -r" we might have padding in the middle of .opd.
something silly in .opd with the assembler. No .opd
optimization for them! */
broken_opd:
- (*_bfd_error_handler)
+ _bfd_error_handler
(_("%B: .opd is not a regular array of opd entries"), ibfd);
- need_edit = FALSE;
+ broken = TRUE;
break;
}
if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
|| (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
{
- (*_bfd_error_handler)
+ _bfd_error_handler
(_("%B: unexpected reloc type %u in .opd section"),
ibfd, r_type);
- need_edit = FALSE;
+ broken = TRUE;
break;
}
sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
sym_sec);
- (*_bfd_error_handler)
+ _bfd_error_handler
(_("%B: undefined sym `%s' in .opd section"),
ibfd, sym_name);
- need_edit = FALSE;
+ broken = TRUE;
break;
}
need_edit = TRUE;
rel += 2;
- if (rel == relend
- || (rel + 1 == relend && rel->r_offset == offset + 16))
+ if (rel + 1 == relend
+ || (rel + 2 < relend
+ && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC))
+ ++rel;
+
+ if (rel == relend)
{
if (sec->size == offset + 24)
{
need_pad = NULL;
break;
}
- if (rel == relend && sec->size == offset + 16)
+ if (sec->size == offset + 16)
{
cnt_16b++;
break;
}
goto broken_opd;
}
-
- if (rel->r_offset == offset + 24)
- offset += 24;
- else if (rel->r_offset != offset + 16)
- goto broken_opd;
else if (rel + 1 < relend
&& ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
&& ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
{
- offset += 16;
- cnt_16b++;
- }
- else if (rel + 2 < relend
- && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
- && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
- {
- offset += 24;
- rel += 1;
+ if (rel[0].r_offset == offset + 16)
+ cnt_16b++;
+ else if (rel[0].r_offset != offset + 24)
+ goto broken_opd;
}
else
goto broken_opd;
add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
- if (need_edit || add_aux_fields)
+ if (!broken && (need_edit || add_aux_fields))
{
Elf_Internal_Rela *write_rel;
Elf_Internal_Shdr *rel_hdr;
bfd_byte *rptr, *wptr;
bfd_byte *new_contents;
- bfd_boolean skip;
- long opd_ent_size;
bfd_size_type amt;
new_contents = NULL;
- amt = sec->size * sizeof (long) / 8;
+ amt = OPD_NDX (sec->size) * sizeof (long);
opd = &ppc64_elf_section_data (sec)->u.opd;
opd->adjust = bfd_zalloc (sec->owner, amt);
if (opd->adjust == NULL)
new_contents = bfd_malloc (sec->size + cnt_16b * 8);
if (new_contents == NULL)
return FALSE;
- need_pad = FALSE;
+ need_pad = NULL;
}
wptr = new_contents;
rptr = sec->contents;
-
write_rel = relstart;
- skip = FALSE;
- offset = 0;
- opd_ent_size = 0;
- for (rel = relstart; rel < relend; rel++)
+ for (rel = relstart; rel < relend; )
{
unsigned long r_symndx;
asection *sym_sec;
struct elf_link_hash_entry *h;
+ struct ppc_link_hash_entry *fdh = NULL;
Elf_Internal_Sym *sym;
+ long opd_ent_size;
+ Elf_Internal_Rela *next_rel;
+ bfd_boolean skip;
r_symndx = ELF64_R_SYM (rel->r_info);
if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
r_symndx, ibfd))
goto error_ret;
- if (rel->r_offset == offset)
+ next_rel = rel + 2;
+ if (next_rel + 1 == relend
+ || (next_rel + 2 < relend
+ && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC))
+ ++next_rel;
+
+ /* See if the .opd entry is full 24 byte or
+ 16 byte (with fd_aux entry overlapped with next
+ fd_func). */
+ opd_ent_size = 24;
+ if (next_rel == relend)
{
- struct ppc_link_hash_entry *fdh = NULL;
-
- /* See if the .opd entry is full 24 byte or
- 16 byte (with fd_aux entry overlapped with next
- fd_func). */
- opd_ent_size = 24;
- if ((rel + 2 == relend && sec->size == offset + 16)
- || (rel + 3 < relend
- && rel[2].r_offset == offset + 16
- && rel[3].r_offset == offset + 24
- && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
- && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
+ if (sec->size == rel->r_offset + 16)
opd_ent_size = 16;
+ }
+ else if (next_rel->r_offset == rel->r_offset + 16)
+ opd_ent_size = 16;
- if (h != NULL
- && h->root.root.string[0] == '.')
- {
- fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab);
- if (fdh != NULL
- && fdh->elf.root.type != bfd_link_hash_defined
- && fdh->elf.root.type != bfd_link_hash_defweak)
- fdh = NULL;
- }
+ if (h != NULL
+ && h->root.root.string[0] == '.')
+ {
+ fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab);
+ if (fdh != NULL
+ && fdh->elf.root.type != bfd_link_hash_defined
+ && fdh->elf.root.type != bfd_link_hash_defweak)
+ fdh = NULL;
+ }
- skip = (sym_sec->owner != ibfd
- || sym_sec->output_section == bfd_abs_section_ptr);
- if (skip)
+ skip = (sym_sec->owner != ibfd
+ || sym_sec->output_section == bfd_abs_section_ptr);
+ if (skip)
+ {
+ if (fdh != NULL && sym_sec->owner == ibfd)
{
- if (fdh != NULL && sym_sec->owner == ibfd)
- {
- /* Arrange for the function descriptor sym
- to be dropped. */
- fdh->elf.root.u.def.value = 0;
- fdh->elf.root.u.def.section = sym_sec;
- }
- opd->adjust[rel->r_offset / 8] = -1;
+ /* Arrange for the function descriptor sym
+ to be dropped. */
+ fdh->elf.root.u.def.value = 0;
+ fdh->elf.root.u.def.section = sym_sec;
}
- else
- {
- /* We'll be keeping this opd entry. */
+ opd->adjust[OPD_NDX (rel->r_offset)] = -1;
- if (fdh != NULL)
- {
- /* Redefine the function descriptor symbol to
- this location in the opd section. It is
- necessary to update the value here rather
- than using an array of adjustments as we do
- for local symbols, because various places
- in the generic ELF code use the value
- stored in u.def.value. */
- fdh->elf.root.u.def.value = wptr - new_contents;
- fdh->adjust_done = 1;
- }
+ if (NO_OPD_RELOCS || bfd_link_relocatable (info))
+ rel = next_rel;
+ else
+ while (1)
+ {
+ if (!dec_dynrel_count (rel->r_info, sec, info,
+ NULL, h, sym))
+ goto error_ret;
- /* Local syms are a bit tricky. We could
- tweak them as they can be cached, but
- we'd need to look through the local syms
- for the function descriptor sym which we
- don't have at the moment. So keep an
- array of adjustments. */
- opd->adjust[rel->r_offset / 8]
- = (wptr - new_contents) - (rptr - sec->contents);
-
- if (wptr != rptr)
- memcpy (wptr, rptr, opd_ent_size);
- wptr += opd_ent_size;
- if (add_aux_fields && opd_ent_size == 16)
- {
- memset (wptr, '\0', 8);
- wptr += 8;
- }
- }
- rptr += opd_ent_size;
- offset += opd_ent_size;
- }
+ if (++rel == next_rel)
+ break;
- if (skip)
- {
- if (!NO_OPD_RELOCS
- && !info->relocatable
- && !dec_dynrel_count (rel->r_info, sec, info,
- NULL, h, sym))
- goto error_ret;
+ r_symndx = ELF64_R_SYM (rel->r_info);
+ if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
+ r_symndx, ibfd))
+ goto error_ret;
+ }
}
else
{
+ /* We'll be keeping this opd entry. */
+ long adjust;
+
+ if (fdh != NULL)
+ {
+ /* Redefine the function descriptor symbol to
+ this location in the opd section. It is
+ necessary to update the value here rather
+ than using an array of adjustments as we do
+ for local symbols, because various places
+ in the generic ELF code use the value
+ stored in u.def.value. */
+ fdh->elf.root.u.def.value = wptr - new_contents;
+ fdh->adjust_done = 1;
+ }
+
+ /* Local syms are a bit tricky. We could
+ tweak them as they can be cached, but
+ we'd need to look through the local syms
+ for the function descriptor sym which we
+ don't have at the moment. So keep an
+ array of adjustments. */
+ adjust = (wptr - new_contents) - (rptr - sec->contents);
+ opd->adjust[OPD_NDX (rel->r_offset)] = adjust;
+
+ if (wptr != rptr)
+ memcpy (wptr, rptr, opd_ent_size);
+ wptr += opd_ent_size;
+ if (add_aux_fields && opd_ent_size == 16)
+ {
+ memset (wptr, '\0', 8);
+ wptr += 8;
+ }
+
/* We need to adjust any reloc offsets to point to the
- new opd entries. While we're at it, we may as well
- remove redundant relocs. */
- rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
- if (write_rel != rel)
- memcpy (write_rel, rel, sizeof (*rel));
- ++write_rel;
+ new opd entries. */
+ for ( ; rel != next_rel; ++rel)
+ {
+ rel->r_offset += adjust;
+ if (write_rel != rel)
+ memcpy (write_rel, rel, sizeof (*rel));
+ ++write_rel;
+ }
}
+
+ rptr += opd_ent_size;
}
sec->size = wptr - new_contents;
/* If we are doing a final link and the last .opd entry is just 16 byte
long, add a 8 byte padding after it. */
- if (need_pad != NULL && !info->relocatable)
+ if (need_pad != NULL && !bfd_link_relocatable (info))
{
bfd_byte *p;
htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
FALSE, FALSE, TRUE));
- if (!htab->params->no_tls_get_addr_opt)
+ if (htab->params->tls_get_addr_opt)
{
struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
tga_fd->root.type = bfd_link_hash_indirect;
tga_fd->root.u.i.link = &opt_fd->root;
ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
+ opt_fd->forced_local = 0;
if (opt_fd->dynindx != -1)
{
/* Use __tls_get_addr_opt in dynamic relocations. */
tga->root.type = bfd_link_hash_indirect;
tga->root.u.i.link = &opt->root;
ppc64_elf_copy_indirect_symbol (info, opt, tga);
+ opt->forced_local = 0;
_bfd_elf_link_hash_hide_symbol (info, opt,
tga->forced_local);
htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
}
}
}
- else
- htab->params->no_tls_get_addr_opt = TRUE;
+ else if (htab->params->tls_get_addr_opt < 0)
+ htab->params->tls_get_addr_opt = 0;
}
return _bfd_elf_tls_setup (info->output_bfd, info);
}
unsigned char *toc_ref;
int pass;
- if (info->relocatable || !info->executable)
+ if (!bfd_link_executable (info))
return TRUE;
htab = ppc_hash_table (info);
if (h != NULL
&& h->root.type == bfd_link_hash_undefweak)
ok_tprel = TRUE;
- else
+ else if (sym_sec != NULL
+ && sym_sec->output_section != NULL)
{
value += sym_sec->output_offset;
value += sym_sec->output_section->vma;
else
value = sym->st_value;
value += rel->r_addend;
- BFD_ASSERT (value < toc->size && value % 8 == 0);
+ if (value % 8 != 0)
+ continue;
+ BFD_ASSERT (value < toc->size
+ && toc->output_offset % 8 == 0);
toc_ref_index = (value + toc->output_offset) / 8;
if (r_type == R_PPC64_TLS
|| r_type == R_PPC64_TLSGD
if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
{
- (*_bfd_error_handler)
+ _bfd_error_handler
(_("%s defined on removed toc entry"), eh->elf.root.root.string);
do
++i;
goto error_ret;
if (sym_sec == NULL
+ || sym_sec->output_section == NULL
|| discarded_section (sym_sec))
continue;
if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
{
if (local_toc_syms)
- (*_bfd_error_handler)
+ _bfd_error_handler
(_("%s defined on removed toc entry"),
bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
do
htab->elf.irelplt->size += rentsize;
htab->got_reli_size += rentsize;
}
- else if ((info->shared
+ else if ((bfd_link_pic (info)
|| WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
&& (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|| h->root.type != bfd_link_hash_undefweak))
struct ppc_link_hash_table *htab;
asection *s;
struct ppc_link_hash_entry *eh;
- struct elf_dyn_relocs *p;
struct got_entry **pgent, *gent;
if (h->root.type == bfd_link_hash_indirect)
if (htab == NULL)
return FALSE;
- if ((htab->elf.dynamic_sections_created
- && h->dynindx != -1
- && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
- || h->type == STT_GNU_IFUNC)
- {
- struct plt_entry *pent;
- bfd_boolean doneone = FALSE;
- for (pent = h->plt.plist; pent != NULL; pent = pent->next)
- if (pent->plt.refcount > 0)
- {
- if (!htab->elf.dynamic_sections_created
- || h->dynindx == -1)
- {
- s = htab->elf.iplt;
- pent->plt.offset = s->size;
- s->size += PLT_ENTRY_SIZE (htab);
- s = htab->elf.irelplt;
- }
- else
- {
- /* If this is the first .plt entry, make room for the special
- first entry. */
- s = htab->elf.splt;
- if (s->size == 0)
- s->size += PLT_INITIAL_ENTRY_SIZE (htab);
-
- pent->plt.offset = s->size;
-
- /* Make room for this entry. */
- s->size += PLT_ENTRY_SIZE (htab);
-
- /* Make room for the .glink code. */
- s = htab->glink;
- if (s->size == 0)
- s->size += GLINK_CALL_STUB_SIZE;
- if (htab->opd_abi)
- {
- /* We need bigger stubs past index 32767. */
- if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
- s->size += 4;
- s->size += 2*4;
- }
- else
- s->size += 4;
-
- /* We also need to make an entry in the .rela.plt section. */
- s = htab->elf.srelplt;
- }
- s->size += sizeof (Elf64_External_Rela);
- doneone = TRUE;
- }
- else
- pent->plt.offset = (bfd_vma) -1;
- if (!doneone)
- {
- h->plt.plist = NULL;
- h->needs_plt = 0;
- }
- }
- else
- {
- h->plt.plist = NULL;
- h->needs_plt = 0;
- }
-
eh = (struct ppc_link_hash_entry *) h;
/* Run through the TLS GD got entries first if we're changing them
to TPREL. */
allocate_got (h, info, gent);
}
- if (eh->dyn_relocs == NULL
- || (!htab->elf.dynamic_sections_created
- && h->type != STT_GNU_IFUNC))
- return TRUE;
-
- /* In the shared -Bsymbolic case, discard space allocated for
- dynamic pc-relative relocs against symbols which turn out to be
- defined in regular objects. For the normal shared case, discard
- space for relocs that have become local due to symbol visibility
- changes. */
+ if (!htab->elf.dynamic_sections_created
+ && h->type != STT_GNU_IFUNC)
+ eh->dyn_relocs = NULL;
- if (info->shared)
+ if (eh->dyn_relocs != NULL)
{
- /* Relocs that use pc_count are those that appear on a call insn,
- or certain REL relocs (see must_be_dyn_reloc) that can be
- generated via assembly. We want calls to protected symbols to
- resolve directly to the function rather than going via the plt.
- If people want function pointer comparisons to work as expected
- then they should avoid writing weird assembly. */
- if (SYMBOL_CALLS_LOCAL (info, h))
+ struct elf_dyn_relocs *p, **pp;
+
+ /* In the shared -Bsymbolic case, discard space allocated for
+ dynamic pc-relative relocs against symbols which turn out to
+ be defined in regular objects. For the normal shared case,
+ discard space for relocs that have become local due to symbol
+ visibility changes. */
+
+ if (bfd_link_pic (info))
{
- struct elf_dyn_relocs **pp;
+ /* Relocs that use pc_count are those that appear on a call
+ insn, or certain REL relocs (see must_be_dyn_reloc) that
+ can be generated via assembly. We want calls to
+ protected symbols to resolve directly to the function
+ rather than going via the plt. If people want function
+ pointer comparisons to work as expected then they should
+ avoid writing weird assembly. */
+ if (SYMBOL_CALLS_LOCAL (info, h))
+ {
+ for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
+ {
+ p->count -= p->pc_count;
+ p->pc_count = 0;
+ if (p->count == 0)
+ *pp = p->next;
+ else
+ pp = &p->next;
+ }
+ }
- for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
+ /* Also discard relocs on undefined weak syms with
+ non-default visibility. */
+ if (eh->dyn_relocs != NULL
+ && h->root.type == bfd_link_hash_undefweak)
{
- p->count -= p->pc_count;
- p->pc_count = 0;
- if (p->count == 0)
- *pp = p->next;
- else
- pp = &p->next;
+ if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
+ eh->dyn_relocs = NULL;
+
+ /* Make sure this symbol is output as a dynamic symbol.
+ Undefined weak syms won't yet be marked as dynamic. */
+ else if (h->dynindx == -1
+ && !h->forced_local)
+ {
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
+ return FALSE;
+ }
}
}
-
- /* Also discard relocs on undefined weak syms with non-default
- visibility. */
- if (eh->dyn_relocs != NULL
- && h->root.type == bfd_link_hash_undefweak)
+ else if (h->type == STT_GNU_IFUNC)
{
- if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
- eh->dyn_relocs = NULL;
+ /* A plt entry is always created when making direct calls to
+ an ifunc, even when building a static executable, but
+ that doesn't cover all cases. We may have only an ifunc
+ initialised function pointer for a given ifunc symbol.
- /* Make sure this symbol is output as a dynamic symbol.
- Undefined weak syms won't yet be marked as dynamic. */
- else if (h->dynindx == -1
- && !h->forced_local)
+ For ELFv2, dynamic relocations are not required when
+ generating a global entry PLT stub. */
+ if (abiversion (info->output_bfd) >= 2)
{
- if (! bfd_elf_link_record_dynamic_symbol (info, h))
- return FALSE;
+ if (global_entry_stub (h))
+ eh->dyn_relocs = NULL;
}
- }
- }
- else if (h->type == STT_GNU_IFUNC)
- {
- if (!h->non_got_ref)
- eh->dyn_relocs = NULL;
- }
- else if (ELIMINATE_COPY_RELOCS)
- {
- /* For the non-shared case, discard space for relocs against
- symbols which turn out to need copy relocs or are not
- dynamic. */
- if (!h->non_got_ref
- && !h->def_regular)
+ /* For ELFv1 we have function descriptors. Descriptors need
+ to be treated like PLT entries and thus have dynamic
+ relocations. One exception is when the function
+ descriptor is copied into .dynbss (which should only
+ happen with ancient versions of gcc). */
+ else if (h->needs_copy)
+ eh->dyn_relocs = NULL;
+ }
+ else if (ELIMINATE_COPY_RELOCS)
{
- /* Make sure this symbol is output as a dynamic symbol.
+ /* For the non-pic case, discard space for relocs against
+ symbols which turn out to need copy relocs or are not
+ dynamic. */
+
+ /* First make sure this symbol is output as a dynamic symbol.
Undefined weak syms won't yet be marked as dynamic. */
- if (h->dynindx == -1
- && !h->forced_local)
- {
- if (! bfd_elf_link_record_dynamic_symbol (info, h))
- return FALSE;
- }
+ if (h->root.type == bfd_link_hash_undefweak
+ && !h->non_got_ref
+ && !h->def_regular
+ && h->dynindx == -1
+ && !h->forced_local
+ && !bfd_elf_link_record_dynamic_symbol (info, h))
+ return FALSE;
- /* If that succeeded, we know we'll be keeping all the
- relocs. */
- if (h->dynindx != -1)
- goto keep;
+ if (h->non_got_ref
+ || h->def_regular
+ || h->dynindx == -1)
+ eh->dyn_relocs = NULL;
}
- eh->dyn_relocs = NULL;
-
- keep: ;
+ /* Finally, allocate space. */
+ for (p = eh->dyn_relocs; p != NULL; p = p->next)
+ {
+ asection *sreloc = elf_section_data (p->sec)->sreloc;
+ if (eh->elf.type == STT_GNU_IFUNC)
+ sreloc = htab->elf.irelplt;
+ sreloc->size += p->count * sizeof (Elf64_External_Rela);
+ }
}
- /* Finally, allocate space. */
- for (p = eh->dyn_relocs; p != NULL; p = p->next)
+ if ((htab->elf.dynamic_sections_created
+ && h->dynindx != -1
+ && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
+ || h->type == STT_GNU_IFUNC)
+ {
+ struct plt_entry *pent;
+ bfd_boolean doneone = FALSE;
+ for (pent = h->plt.plist; pent != NULL; pent = pent->next)
+ if (pent->plt.refcount > 0)
+ {
+ if (!htab->elf.dynamic_sections_created
+ || h->dynindx == -1)
+ {
+ s = htab->elf.iplt;
+ pent->plt.offset = s->size;
+ s->size += PLT_ENTRY_SIZE (htab);
+ s = htab->elf.irelplt;
+ }
+ else
+ {
+ /* If this is the first .plt entry, make room for the special
+ first entry. */
+ s = htab->elf.splt;
+ if (s->size == 0)
+ s->size += PLT_INITIAL_ENTRY_SIZE (htab);
+
+ pent->plt.offset = s->size;
+
+ /* Make room for this entry. */
+ s->size += PLT_ENTRY_SIZE (htab);
+
+ /* Make room for the .glink code. */
+ s = htab->glink;
+ if (s->size == 0)
+ s->size += GLINK_CALL_STUB_SIZE;
+ if (htab->opd_abi)
+ {
+ /* We need bigger stubs past index 32767. */
+ if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
+ s->size += 4;
+ s->size += 2*4;
+ }
+ else
+ s->size += 4;
+
+ /* We also need to make an entry in the .rela.plt section. */
+ s = htab->elf.srelplt;
+ }
+ s->size += sizeof (Elf64_External_Rela);
+ doneone = TRUE;
+ }
+ else
+ pent->plt.offset = (bfd_vma) -1;
+ if (!doneone)
+ {
+ h->plt.plist = NULL;
+ h->needs_plt = 0;
+ }
+ }
+ else
{
- asection *sreloc = elf_section_data (p->sec)->sreloc;
- if (eh->elf.type == STT_GNU_IFUNC)
- sreloc = htab->elf.irelplt;
- sreloc->size += p->count * sizeof (Elf64_External_Rela);
+ h->plt.plist = NULL;
+ h->needs_plt = 0;
}
return TRUE;
need to define the symbol in the executable on a call stub.
This is to avoid text relocations. */
s->size = (s->size + 15) & -16;
+ h->root.type = bfd_link_hash_defined;
h->root.u.def.section = s;
h->root.u.def.value = s->size;
s->size += 16;
if (htab->elf.dynamic_sections_created)
{
/* Set the contents of the .interp section to the interpreter. */
- if (info->executable)
+ if (bfd_link_executable (info) && !info->nointerp)
{
s = bfd_get_linker_section (dynobj, ".interp");
if (s == NULL)
htab->elf.irelplt->size += rel_size;
htab->got_reli_size += rel_size;
}
- else if (info->shared)
+ else if (bfd_link_pic (info))
{
asection *srel = ppc64_elf_tdata (ibfd)->relgot;
srel->size += rel_size;
if (htab->glink != NULL)
htab->glink->rawsize = htab->glink->size;
- if (!htab->opd_abi && !info->shared)
+ if (!htab->opd_abi && !bfd_link_pic (info))
elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
first_tlsld = NULL;
ent->got.offset = s->size;
ent->owner = ibfd;
s->size += 16;
- if (info->shared)
+ if (bfd_link_pic (info))
{
asection *srel = ppc64_elf_tdata (ibfd)->relgot;
srel->size += sizeof (Elf64_External_Rela);
#define add_dynamic_entry(TAG, VAL) \
_bfd_elf_add_dynamic_entry (info, TAG, VAL)
- if (info->executable)
+ if (bfd_link_executable (info))
{
if (!add_dynamic_entry (DT_DEBUG, 0))
return FALSE;
return FALSE;
}
- tls_opt = (!htab->params->no_tls_get_addr_opt
+ tls_opt = (htab->params->tls_get_addr_opt
&& htab->tls_get_addr_fd != NULL
&& htab->tls_get_addr_fd->elf.plt.plist != NULL);
if (tls_opt || !htab->opd_abi)
size += 4;
if (htab->params->plt_static_chain)
size += 4;
- if (htab->params->plt_thread_safe)
+ if (htab->params->plt_thread_safe
+ && htab->elf.dynamic_sections_created
+ && stub_entry->h != NULL
+ && stub_entry->h->elf.dynindx != -1)
size += 8;
if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
size += 4;
if (stub_entry->h != NULL
&& (stub_entry->h == htab->tls_get_addr_fd
|| stub_entry->h == htab->tls_get_addr)
- && !htab->params->no_tls_get_addr_opt)
+ && htab->params->tls_get_addr_opt)
size += 13 * 4;
return size;
}
{
int stub_align = 1 << htab->params->plt_stub_align;
unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
- bfd_vma stub_off = stub_entry->stub_sec->size;
+ bfd_vma stub_off = stub_entry->group->stub_sec->size;
if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
- > (stub_size & -stub_align))
+ > ((stub_size - 1) & -stub_align))
return stub_align - (stub_off & (stub_align - 1));
return 0;
}
bfd *obfd = htab->params->stub_bfd;
bfd_boolean plt_load_toc = htab->opd_abi;
bfd_boolean plt_static_chain = htab->params->plt_static_chain;
- bfd_boolean plt_thread_safe = htab->params->plt_thread_safe;
+ bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe
+ && htab->elf.dynamic_sections_created
+ && stub_entry->h != NULL
+ && stub_entry->h->elf.dynindx != -1);
bfd_boolean use_fake_dep = plt_thread_safe;
bfd_vma cmp_branch_off = 0;
if (!ALWAYS_USE_FAKE_DEP
&& plt_load_toc
&& plt_thread_safe
- && !(stub_entry->h != NULL
- && (stub_entry->h == htab->tls_get_addr_fd
- || stub_entry->h == htab->tls_get_addr)
- && !htab->params->no_tls_get_addr_opt))
+ && !((stub_entry->h == htab->tls_get_addr_fd
+ || stub_entry->h == htab->tls_get_addr)
+ && htab->params->tls_get_addr_opt))
{
bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
to = (glinkoff
+ htab->glink->output_offset
+ htab->glink->output_section->vma);
- from = (p - stub_entry->stub_sec->contents
+ from = (p - stub_entry->group->stub_sec->contents
+ 4 * (ALWAYS_EMIT_R2SAVE
|| stub_entry->stub_type == ppc_stub_plt_call_r2save)
+ 4 * (PPC_HA (offset) != 0)
!= PPC_HA (offset))
+ 4 * (plt_static_chain != 0)
+ 20
- + stub_entry->stub_sec->output_offset
- + stub_entry->stub_sec->output_section->vma);
+ + stub_entry->group->stub_sec->output_offset
+ + stub_entry->group->stub_sec->output_section->vma);
cmp_branch_off = to - from;
use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
}
p = build_plt_stub (htab, stub_entry, p, offset, r);
bfd_put_32 (obfd, BCTRL, p - 4);
- bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
+ bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
bfd_put_32 (obfd, MTLR_R11, p), p += 4;
bfd_put_32 (obfd, BLR, p), p += 4;
struct ppc_stub_hash_entry *stub_entry)
{
struct ppc_link_hash_table *htab = ppc_hash_table (info);
- bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
+ bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off;
if (r2off == 0)
{
info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
stub_entry->h->elf.root.root.string);
bfd_set_error (bfd_error_bad_value);
- return 0;
+ return (bfd_vma) -1;
}
if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
- return 0;
+ return (bfd_vma) -1;
r2off = bfd_get_64 (opd->owner, buf);
r2off -= elf_gp (info->output_bfd);
}
- r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
+ r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off;
return r2off;
}
return FALSE;
/* Make a note of the offset within the stubs for this entry. */
- stub_entry->stub_offset = stub_entry->stub_sec->size;
- loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
+ stub_entry->stub_offset = stub_entry->group->stub_sec->size;
+ loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset;
htab->stub_count[stub_entry->stub_type - 1] += 1;
switch (stub_entry->stub_type)
/* And this is where we are coming from. */
off -= (stub_entry->stub_offset
- + stub_entry->stub_sec->output_offset
- + stub_entry->stub_sec->output_section->vma);
+ + stub_entry->group->stub_sec->output_offset
+ + stub_entry->group->stub_sec->output_section->vma);
size = 4;
if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
{
bfd_vma r2off = get_r2off (info, stub_entry);
- if (r2off == 0)
+ if (r2off == (bfd_vma) -1)
{
htab->stub_error = TRUE;
return FALSE;
}
bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
loc += 4;
- size = 12;
+ size = 8;
if (PPC_HA (r2off) != 0)
{
- size = 16;
bfd_put_32 (htab->params->stub_bfd,
ADDIS_R2_R2 | PPC_HA (r2off), loc);
loc += 4;
+ size += 4;
+ }
+ if (PPC_LO (r2off) != 0)
+ {
+ bfd_put_32 (htab->params->stub_bfd,
+ ADDI_R2_R2 | PPC_LO (r2off), loc);
+ loc += 4;
+ size += 4;
}
- bfd_put_32 (htab->params->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
- loc += 4;
off -= size - 4;
}
bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
if (info->emitrelocations)
{
- r = get_relocs (stub_entry->stub_sec, 1);
+ r = get_relocs (stub_entry->group->stub_sec, 1);
if (r == NULL)
return FALSE;
- r->r_offset = loc - stub_entry->stub_sec->contents;
+ r->r_offset = loc - stub_entry->group->stub_sec->contents;
r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
r->r_addend = dest;
if (stub_entry->h != NULL)
off = (dest
- elf_gp (htab->brlt->output_section->owner)
- - htab->stub_group[stub_entry->id_sec->id].toc_off);
+ - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
{
if (info->emitrelocations)
{
- r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
+ r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0));
if (r == NULL)
return FALSE;
- r[0].r_offset = loc - stub_entry->stub_sec->contents;
+ r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
if (bfd_big_endian (info->output_bfd))
r[0].r_offset += 2;
if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
{
bfd_vma r2off = get_r2off (info, stub_entry);
- if (r2off == 0 && htab->opd_abi)
+ if (r2off == (bfd_vma) -1)
{
htab->stub_error = TRUE;
return FALSE;
struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
/* If the old-ABI "dot-symbol" is undefined make it weak so
- we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
- FIXME: We used to define the symbol on one of the call
- stubs instead, which is why we test symbol section id
- against htab->top_id in various places. Likely all
- these checks could now disappear. */
+ we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
if (fh->elf.root.type == bfd_link_hash_undefined)
fh->elf.root.type = bfd_link_hash_undefweak;
/* Stop undo_symbol_twiddle changing it back to undefined. */
off = (dest
- elf_gp (plt->output_section->owner)
- - htab->stub_group[stub_entry->id_sec->id].toc_off);
+ - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
{
{
unsigned pad = plt_stub_pad (htab, stub_entry, off);
- stub_entry->stub_sec->size += pad;
- stub_entry->stub_offset = stub_entry->stub_sec->size;
+ stub_entry->group->stub_sec->size += pad;
+ stub_entry->stub_offset = stub_entry->group->stub_sec->size;
loc += pad;
}
r = NULL;
if (info->emitrelocations)
{
- r = get_relocs (stub_entry->stub_sec,
+ r = get_relocs (stub_entry->group->stub_sec,
((PPC_HA (off) != 0)
+ (htab->opd_abi
? 2 + (htab->params->plt_static_chain
: 1)));
if (r == NULL)
return FALSE;
- r[0].r_offset = loc - stub_entry->stub_sec->contents;
+ r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
if (bfd_big_endian (info->output_bfd))
r[0].r_offset += 2;
r[0].r_addend = dest;
if (stub_entry->h != NULL
&& (stub_entry->h == htab->tls_get_addr_fd
|| stub_entry->h == htab->tls_get_addr)
- && !htab->params->no_tls_get_addr_opt)
+ && htab->params->tls_get_addr_opt)
p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
else
p = build_plt_stub (htab, stub_entry, loc, off, r);
size = p - loc;
break;
+ case ppc_stub_save_res:
+ return TRUE;
+
default:
BFD_FAIL ();
return FALSE;
}
- stub_entry->stub_sec->size += size;
+ stub_entry->group->stub_sec->size += size;
if (htab->params->emit_stub_syms)
{
if (h->root.type == bfd_link_hash_new)
{
h->root.type = bfd_link_hash_defined;
- h->root.u.def.section = stub_entry->stub_sec;
+ h->root.u.def.section = stub_entry->group->stub_sec;
h->root.u.def.value = stub_entry->stub_offset;
h->ref_regular = 1;
h->def_regular = 1;
h->ref_regular_nonweak = 1;
h->forced_local = 1;
h->non_elf = 0;
+ h->root.linker_def = 1;
}
}
if (htab == NULL)
return FALSE;
+ if (stub_entry->h != NULL
+ && stub_entry->h->save_res
+ && stub_entry->h->elf.root.type == bfd_link_hash_defined
+ && stub_entry->h->elf.root.u.def.section == htab->sfpr)
+ {
+ /* Don't make stubs to out-of-line register save/restore
+ functions. Instead, emit copies of the functions. */
+ stub_entry->group->needs_save_res = 1;
+ stub_entry->stub_type = ppc_stub_save_res;
+ return TRUE;
+ }
+
if (stub_entry->stub_type == ppc_stub_plt_call
|| stub_entry->stub_type == ppc_stub_plt_call_r2save)
{
off += (plt->output_offset
+ plt->output_section->vma
- elf_gp (plt->output_section->owner)
- - htab->stub_group[stub_entry->id_sec->id].toc_off);
+ - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
size = plt_stub_size (htab, stub_entry, off);
if (htab->params->plt_stub_align)
size += plt_stub_pad (htab, stub_entry, off);
if (info->emitrelocations)
{
- stub_entry->stub_sec->reloc_count
+ stub_entry->group->stub_sec->reloc_count
+= ((PPC_HA (off) != 0)
+ (htab->opd_abi
? 2 + (htab->params->plt_static_chain
&& PPC_HA (off + 16) == PPC_HA (off))
: 1));
- stub_entry->stub_sec->flags |= SEC_RELOC;
+ stub_entry->group->stub_sec->flags |= SEC_RELOC;
}
}
else
off = (stub_entry->target_value
+ stub_entry->target_section->output_offset
+ stub_entry->target_section->output_section->vma);
- off -= (stub_entry->stub_sec->size
- + stub_entry->stub_sec->output_offset
- + stub_entry->stub_sec->output_section->vma);
+ off -= (stub_entry->group->stub_sec->size
+ + stub_entry->group->stub_sec->output_offset
+ + stub_entry->group->stub_sec->output_section->vma);
/* Reset the stub type from the plt variant in case we now
can reach with a shorter stub. */
if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
{
r2off = get_r2off (info, stub_entry);
- if (r2off == 0 && htab->opd_abi)
+ if (r2off == (bfd_vma) -1)
{
htab->stub_error = TRUE;
return FALSE;
}
- size = 12;
+ size = 8;
if (PPC_HA (r2off) != 0)
- size = 16;
+ size += 4;
+ if (PPC_LO (r2off) != 0)
+ size += 4;
off -= size - 4;
}
Do the same for -R objects without function descriptors. */
if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
|| (stub_entry->stub_type == ppc_stub_long_branch_r2off
- && r2off == 0))
+ && r2off == 0
+ && htab->sec_info[stub_entry->target_section->id].toc_off == 0))
{
struct ppc_branch_hash_entry *br_entry;
+ htab->brlt->output_offset
+ htab->brlt->output_section->vma
- elf_gp (htab->brlt->output_section->owner)
- - htab->stub_group[stub_entry->id_sec->id].toc_off);
+ - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
if (info->emitrelocations)
{
- stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
- stub_entry->stub_sec->flags |= SEC_RELOC;
+ stub_entry->group->stub_sec->reloc_count
+ += 1 + (PPC_HA (off) != 0);
+ stub_entry->group->stub_sec->flags |= SEC_RELOC;
}
if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
}
else if (info->emitrelocations)
{
- stub_entry->stub_sec->reloc_count += 1;
- stub_entry->stub_sec->flags |= SEC_RELOC;
+ stub_entry->group->stub_sec->reloc_count += 1;
+ stub_entry->group->stub_sec->flags |= SEC_RELOC;
}
}
- stub_entry->stub_sec->size += size;
+ stub_entry->group->stub_sec->size += size;
return TRUE;
}
int
ppc64_elf_setup_section_lists (struct bfd_link_info *info)
{
- bfd *input_bfd;
- int top_id, top_index, id;
- asection *section;
- asection **input_list;
+ unsigned int id;
bfd_size_type amt;
struct ppc_link_hash_table *htab = ppc_hash_table (info);
if (htab == NULL)
return -1;
- /* Find the top input section id. */
- for (input_bfd = info->input_bfds, top_id = 3;
- input_bfd != NULL;
- input_bfd = input_bfd->link.next)
- {
- for (section = input_bfd->sections;
- section != NULL;
- section = section->next)
- {
- if (top_id < section->id)
- top_id = section->id;
- }
- }
-
- htab->top_id = top_id;
- amt = sizeof (struct map_stub) * (top_id + 1);
- htab->stub_group = bfd_zmalloc (amt);
- if (htab->stub_group == NULL)
+ htab->sec_info_arr_size = bfd_get_next_section_id ();
+ amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size);
+ htab->sec_info = bfd_zmalloc (amt);
+ if (htab->sec_info == NULL)
return -1;
/* Set toc_off for com, und, abs and ind sections. */
for (id = 0; id < 3; id++)
- htab->stub_group[id].toc_off = TOC_BASE_OFF;
-
- /* We can't use output_bfd->section_count here to find the top output
- section index as some sections may have been removed, and
- strip_excluded_output_sections doesn't renumber the indices. */
- for (section = info->output_bfd->sections, top_index = 0;
- section != NULL;
- section = section->next)
- {
- if (top_index < section->index)
- top_index = section->index;
- }
-
- htab->top_index = top_index;
- amt = sizeof (asection *) * (top_index + 1);
- input_list = bfd_zmalloc (amt);
- htab->input_list = input_list;
- if (input_list == NULL)
- return -1;
+ htab->sec_info[id].toc_off = TOC_BASE_OFF;
return 1;
}
addr = (htab->toc_first_sec->output_offset
+ htab->toc_first_sec->output_section->vma);
htab->toc_curr = addr;
+ htab->toc_curr &= -TOC_BASE_ALIGN;
}
/* toc_curr is the base address of this toc group. Set elf_gp
htab->elf.irelplt->size += rel_size;
htab->got_reli_size += rel_size;
}
- else if (info->shared)
+ else if (bfd_link_pic (info))
{
asection *srel = ppc64_elf_tdata (ibfd)->relgot;
srel->size += rel_size;
asection *s = ppc64_elf_tdata (ibfd)->got;
ent->got.offset = s->size;
s->size += 16;
- if (info->shared)
+ if (bfd_link_pic (info))
{
asection *srel = ppc64_elf_tdata (ibfd)->relgot;
srel->size += sizeof (Elf64_External_Rela);
{
long adjust;
- adjust = opd->adjust[sym->st_value / 8];
+ adjust = opd->adjust[OPD_NDX (sym_value)];
if (adjust == -1)
/* Assume deleted functions won't ever be called. */
continue;
return FALSE;
if ((isec->output_section->flags & SEC_CODE) != 0
- && isec->output_section->index <= htab->top_index)
+ && isec->output_section->id < htab->sec_info_arr_size)
{
- asection **list = htab->input_list + isec->output_section->index;
- /* Steal the link_sec pointer for our list. */
-#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
/* This happens to make the list in reverse order,
which is what we want. */
- PREV_SEC (isec) = *list;
- *list = isec;
+ htab->sec_info[isec->id].u.list
+ = htab->sec_info[isec->output_section->id].u.list;
+ htab->sec_info[isec->output_section->id].u.list = isec;
}
if (htab->multi_toc_needed)
htab->toc_curr = elf_gp (isec->owner);
}
- htab->stub_group[isec->id].toc_off = htab->toc_curr;
+ htab->sec_info[isec->id].toc_off = htab->toc_curr;
return TRUE;
}
if (i->has_toc_reloc)
{
if (toc_off == 0)
- toc_off = htab->stub_group[i->id].toc_off;
- else if (toc_off != htab->stub_group[i->id].toc_off)
+ toc_off = htab->sec_info[i->id].toc_off;
+ else if (toc_off != htab->sec_info[i->id].toc_off)
return FALSE;
}
for (i = o->map_head.s; i != NULL; i = i->map_head.s)
if (i->makes_toc_func_call)
{
- toc_off = htab->stub_group[i->id].toc_off;
+ toc_off = htab->sec_info[i->id].toc_off;
break;
}
/* Make sure the whole pasted function uses the same toc offset. */
if (toc_off != 0)
for (i = o->map_head.s; i != NULL; i = i->map_head.s)
- htab->stub_group[i->id].toc_off = toc_off;
+ htab->sec_info[i->id].toc_off = toc_off;
}
return TRUE;
}
_init and _fini functions into multiple parts. Putting a stub in
the middle of a function is not a good idea. */
-static void
-group_sections (struct ppc_link_hash_table *htab,
+static bfd_boolean
+group_sections (struct bfd_link_info *info,
bfd_size_type stub_group_size,
bfd_boolean stubs_always_before_branch)
{
- asection **list;
- bfd_size_type stub14_group_size;
+ struct ppc_link_hash_table *htab;
+ asection *osec;
bfd_boolean suppress_size_errors;
+ htab = ppc_hash_table (info);
+ if (htab == NULL)
+ return FALSE;
+
suppress_size_errors = FALSE;
- stub14_group_size = stub_group_size;
if (stub_group_size == 1)
{
/* Default values. */
if (stubs_always_before_branch)
- {
- stub_group_size = 0x1e00000;
- stub14_group_size = 0x7800;
- }
+ stub_group_size = 0x1e00000;
else
- {
- stub_group_size = 0x1c00000;
- stub14_group_size = 0x7000;
- }
+ stub_group_size = 0x1c00000;
suppress_size_errors = TRUE;
}
- list = htab->input_list + htab->top_index;
- do
+ for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next)
{
- asection *tail = *list;
+ asection *tail;
+
+ if (osec->id >= htab->sec_info_arr_size)
+ continue;
+
+ tail = htab->sec_info[osec->id].u.list;
while (tail != NULL)
{
asection *curr;
bfd_size_type total;
bfd_boolean big_sec;
bfd_vma curr_toc;
+ struct map_stub *group;
+ bfd_size_type group_size;
curr = tail;
total = tail->size;
- big_sec = total > (ppc64_elf_section_data (tail) != NULL
- && ppc64_elf_section_data (tail)->has_14bit_branch
- ? stub14_group_size : stub_group_size);
+ group_size = (ppc64_elf_section_data (tail) != NULL
+ && ppc64_elf_section_data (tail)->has_14bit_branch
+ ? stub_group_size >> 10 : stub_group_size);
+
+ big_sec = total > group_size;
if (big_sec && !suppress_size_errors)
- (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
- tail->owner, tail);
- curr_toc = htab->stub_group[tail->id].toc_off;
+ _bfd_error_handler (_("%B section %A exceeds stub group size"),
+ tail->owner, tail);
+ curr_toc = htab->sec_info[tail->id].toc_off;
- while ((prev = PREV_SEC (curr)) != NULL
+ while ((prev = htab->sec_info[curr->id].u.list) != NULL
&& ((total += curr->output_offset - prev->output_offset)
< (ppc64_elf_section_data (prev) != NULL
&& ppc64_elf_section_data (prev)->has_14bit_branch
- ? stub14_group_size : stub_group_size))
- && htab->stub_group[prev->id].toc_off == curr_toc)
+ ? (group_size = stub_group_size >> 10) : group_size))
+ && htab->sec_info[prev->id].toc_off == curr_toc)
curr = prev;
/* OK, the size from the start of CURR to the end is less
- than stub_group_size and thus can be handled by one stub
+ than group_size and thus can be handled by one stub
section. (or the tail section is itself larger than
- stub_group_size, in which case we may be toast.) We
- should really be keeping track of the total size of stubs
- added here, as stubs contribute to the final output
- section size. That's a little tricky, and this way will
- only break if stubs added make the total size more than
- 2^25, ie. for the default stub_group_size, if stubs total
- more than 2097152 bytes, or nearly 75000 plt call stubs. */
+ group_size, in which case we may be toast.) We should
+ really be keeping track of the total size of stubs added
+ here, as stubs contribute to the final output section
+ size. That's a little tricky, and this way will only
+ break if stubs added make the total size more than 2^25,
+ ie. for the default stub_group_size, if stubs total more
+ than 2097152 bytes, or nearly 75000 plt call stubs. */
+ group = bfd_alloc (curr->owner, sizeof (*group));
+ if (group == NULL)
+ return FALSE;
+ group->link_sec = curr;
+ group->stub_sec = NULL;
+ group->needs_save_res = 0;
+ group->next = htab->group;
+ htab->group = group;
do
{
- prev = PREV_SEC (tail);
+ prev = htab->sec_info[tail->id].u.list;
/* Set up this stub group. */
- htab->stub_group[tail->id].link_sec = curr;
+ htab->sec_info[tail->id].u.group = group;
}
while (tail != curr && (tail = prev) != NULL);
- /* But wait, there's more! Input sections up to stub_group_size
+ /* But wait, there's more! Input sections up to group_size
bytes before the stub section can be handled by it too.
Don't do this if we have a really large section after the
stubs, as adding more stubs increases the chance that
&& ((total += tail->output_offset - prev->output_offset)
< (ppc64_elf_section_data (prev) != NULL
&& ppc64_elf_section_data (prev)->has_14bit_branch
- ? stub14_group_size : stub_group_size))
- && htab->stub_group[prev->id].toc_off == curr_toc)
+ ? (group_size = stub_group_size >> 10) : group_size))
+ && htab->sec_info[prev->id].toc_off == curr_toc)
{
tail = prev;
- prev = PREV_SEC (tail);
- htab->stub_group[tail->id].link_sec = curr;
+ prev = htab->sec_info[tail->id].u.list;
+ htab->sec_info[tail->id].u.group = group;
}
}
tail = prev;
}
}
- while (list-- != htab->input_list);
- free (htab->input_list);
-#undef PREV_SEC
+ return TRUE;
}
static const unsigned char glink_eh_frame_cie[] =
65, /* RA reg. */
1, /* Augmentation size. */
DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
- DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
+ DW_CFA_def_cfa, 1, 0, /* def_cfa: r1 offset 0. */
+ 0, 0, 0, 0
};
/* Stripping output sections is normally done before dynamic section
if (htab == NULL)
return FALSE;
- if (htab->params->plt_thread_safe == -1 && !info->executable)
+ if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info))
htab->params->plt_thread_safe = 1;
if (!htab->opd_abi)
htab->params->plt_thread_safe = 0;
/* libanl */
"getaddrinfo_a",
/* libgomp */
+ "GOMP_parallel",
"GOMP_parallel_start",
+ "GOMP_parallel_loop_static",
"GOMP_parallel_loop_static_start",
+ "GOMP_parallel_loop_dynamic",
"GOMP_parallel_loop_dynamic_start",
+ "GOMP_parallel_loop_guided",
"GOMP_parallel_loop_guided_start",
+ "GOMP_parallel_loop_runtime",
"GOMP_parallel_loop_runtime_start",
+ "GOMP_parallel_sections",
"GOMP_parallel_sections_start",
+ /* libgo */
+ "__go_go",
};
unsigned i;
- for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
+ for (i = 0; i < ARRAY_SIZE (thread_starter); i++)
{
struct elf_link_hash_entry *h;
h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
else
stub_group_size = htab->params->group_size;
- group_sections (htab, stub_group_size, stubs_always_before_branch);
+ if (!group_sections (info, stub_group_size, stubs_always_before_branch))
+ return FALSE;
+
+#define STUB_SHRINK_ITER 20
+ /* Loop until no stubs added. After iteration 20 of this loop we may
+ exit on a stub section shrinking. This is to break out of a
+ pathological case where adding stubs on one iteration decreases
+ section gaps (perhaps due to alignment), which then requires
+ fewer or smaller stubs on the next iteration. */
while (1)
{
bfd *input_bfd;
unsigned int bfd_indx;
+ struct map_stub *group;
asection *stub_sec;
htab->stub_iteration += 1;
if (hash == NULL)
{
sym_value = sym->st_value;
- ok_dest = TRUE;
+ if (sym_sec != NULL
+ && sym_sec->output_section != NULL)
+ ok_dest = TRUE;
}
else if (hash->elf.root.type == bfd_link_hash_defined
|| hash->elf.root.type == bfd_link_hash_defweak)
if (hash == NULL && opd->adjust != NULL)
{
- long adjust = opd->adjust[sym_value / 8];
+ long adjust = opd->adjust[OPD_NDX (sym_value)];
if (adjust == -1)
continue;
code_value += adjust;
fact a call needing a TOC adjustment. */
if (code_sec != NULL
&& code_sec->output_section != NULL
- && (htab->stub_group[code_sec->id].toc_off
- != htab->stub_group[section->id].toc_off)
+ && (htab->sec_info[code_sec->id].toc_off
+ != htab->sec_info[section->id].toc_off)
&& (code_sec->has_toc_reloc
|| code_sec->makes_toc_func_call))
stub_type = ppc_stub_long_branch_r2off;
stub_type = ppc_stub_plt_call_r2save;
/* Support for grouping stub sections. */
- id_sec = htab->stub_group[section->id].link_sec;
+ id_sec = htab->sec_info[section->id].u.group->link_sec;
/* Get the name of this stub. */
stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
+ for (group = htab->group; group != NULL; group = group->next)
+ if (group->needs_save_res)
+ group->stub_sec->size += htab->sfpr->size;
+
if (info->emitrelocations
&& htab->glink != NULL && htab->glink->size != 0)
{
stub_sec != NULL;
stub_sec = stub_sec->next)
if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
- size += 20;
+ size += 24;
if (htab->glink != NULL && htab->glink->size != 0)
size += 24;
if (size != 0)
if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
stub_sec->size = ((stub_sec->size
+ (1 << htab->params->plt_stub_align) - 1)
- & (-1 << htab->params->plt_stub_align));
+ & -(1 << htab->params->plt_stub_align));
for (stub_sec = htab->params->stub_bfd->sections;
stub_sec != NULL;
stub_sec = stub_sec->next)
if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
- && stub_sec->rawsize != stub_sec->size)
+ && stub_sec->rawsize != stub_sec->size
+ && (htab->stub_iteration <= STUB_SHRINK_ITER
+ || stub_sec->rawsize < stub_sec->size))
break;
- /* Exit from this loop when no stubs have been added, and no stubs
- have changed size. */
if (stub_sec == NULL
&& (htab->glink_eh_frame == NULL
|| htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
(*htab->params->layout_sections_again) ();
}
+ if (htab->glink_eh_frame != NULL
+ && htab->glink_eh_frame->size != 0)
+ {
+ bfd_vma val;
+ bfd_byte *p, *last_fde;
+ size_t last_fde_len, size, align, pad;
+ asection *stub_sec;
+
+ p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
+ if (p == NULL)
+ return FALSE;
+ htab->glink_eh_frame->contents = p;
+ last_fde = p;
+
+ memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
+ /* CIE length (rewrite in case little-endian). */
+ last_fde_len = sizeof (glink_eh_frame_cie) - 4;
+ bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
+ p += sizeof (glink_eh_frame_cie);
+
+ for (stub_sec = htab->params->stub_bfd->sections;
+ stub_sec != NULL;
+ stub_sec = stub_sec->next)
+ if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
+ {
+ last_fde = p;
+ last_fde_len = 20;
+ /* FDE length. */
+ bfd_put_32 (htab->elf.dynobj, 20, p);
+ p += 4;
+ /* CIE pointer. */
+ val = p - htab->glink_eh_frame->contents;
+ bfd_put_32 (htab->elf.dynobj, val, p);
+ p += 4;
+ /* Offset to stub section, written later. */
+ p += 4;
+ /* stub section size. */
+ bfd_put_32 (htab->elf.dynobj, stub_sec->size, p);
+ p += 4;
+ /* Augmentation. */
+ p += 1;
+ /* Pad. */
+ p += 7;
+ }
+ if (htab->glink != NULL && htab->glink->size != 0)
+ {
+ last_fde = p;
+ last_fde_len = 20;
+ /* FDE length. */
+ bfd_put_32 (htab->elf.dynobj, 20, p);
+ p += 4;
+ /* CIE pointer. */
+ val = p - htab->glink_eh_frame->contents;
+ bfd_put_32 (htab->elf.dynobj, val, p);
+ p += 4;
+ /* Offset to .glink, written later. */
+ p += 4;
+ /* .glink size. */
+ bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
+ p += 4;
+ /* Augmentation. */
+ p += 1;
+
+ *p++ = DW_CFA_advance_loc + 1;
+ *p++ = DW_CFA_register;
+ *p++ = 65;
+ *p++ = htab->opd_abi ? 12 : 0;
+ *p++ = DW_CFA_advance_loc + 4;
+ *p++ = DW_CFA_restore_extended;
+ *p++ = 65;
+ }
+ /* Subsume any padding into the last FDE if user .eh_frame
+ sections are aligned more than glink_eh_frame. Otherwise any
+ zero padding will be seen as a terminator. */
+ size = p - htab->glink_eh_frame->contents;
+ align = 1;
+ align <<= htab->glink_eh_frame->output_section->alignment_power;
+ align -= 1;
+ pad = ((size + align) & ~align) - size;
+ htab->glink_eh_frame->size = size + pad;
+ bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
+ }
+
maybe_strip_output (info, htab->brlt);
if (htab->glink_eh_frame != NULL)
maybe_strip_output (info, htab->glink_eh_frame);
ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
{
asection *s;
- bfd_vma TOCstart;
+ bfd_vma TOCstart, adjust;
+
+ if (info != NULL)
+ {
+ struct elf_link_hash_entry *h;
+ struct elf_link_hash_table *htab = elf_hash_table (info);
+
+ if (is_elf_hash_table (htab)
+ && htab->hgot != NULL)
+ h = htab->hgot;
+ else
+ {
+ h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE);
+ if (is_elf_hash_table (htab))
+ htab->hgot = h;
+ }
+ if (h != NULL
+ && h->root.type == bfd_link_hash_defined
+ && !h->root.linker_def
+ && (!is_elf_hash_table (htab)
+ || h->def_regular))
+ {
+ TOCstart = (h->root.u.def.value - TOC_BASE_OFF
+ + h->root.u.def.section->output_offset
+ + h->root.u.def.section->output_section->vma);
+ _bfd_set_gp_value (obfd, TOCstart);
+ return TOCstart;
+ }
+ }
/* The TOC consists of sections .got, .toc, .tocbss, .plt in that
order. The TOC starts where the first of these sections starts. */
if (s != NULL)
TOCstart = s->output_section->vma + s->output_offset;
+ /* Force alignment. */
+ adjust = TOCstart & (TOC_BASE_ALIGN - 1);
+ TOCstart -= adjust;
_bfd_set_gp_value (obfd, TOCstart);
if (info != NULL && s != NULL)
{
if (htab->elf.hgot != NULL)
{
- htab->elf.hgot->root.u.def.value = TOC_BASE_OFF;
+ htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust;
htab->elf.hgot->root.u.def.section = s;
}
}
{
struct bfd_link_hash_entry *bh = NULL;
_bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
- s, TOC_BASE_OFF, NULL, FALSE,
- FALSE, &bh);
+ s, TOC_BASE_OFF - adjust,
+ NULL, FALSE, FALSE, &bh);
}
}
return TOCstart;
h->ref_regular_nonweak = 1;
h->forced_local = 1;
h->non_elf = 0;
+ h->root.linker_def = 1;
}
}
char **stats)
{
struct ppc_link_hash_table *htab = ppc_hash_table (info);
+ struct map_stub *group;
asection *stub_sec;
bfd_byte *p;
int stub_sec_count = 0;
stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
if (stub_sec->contents == NULL)
return FALSE;
- /* We want to check that built size is the same as calculated
- size. rawsize is a convenient location to use. */
- stub_sec->rawsize = stub_sec->size;
stub_sec->size = 0;
}
h->ref_regular_nonweak = 1;
h->forced_local = 1;
h->non_elf = 0;
+ h->root.linker_def = 1;
}
}
plt0 = (htab->elf.splt->output_section->vma
return FALSE;
}
- if (htab->glink_eh_frame != NULL
- && htab->glink_eh_frame->size != 0)
- {
- bfd_vma val;
- bfd_byte *last_fde;
- size_t last_fde_len, size, align, pad;
-
- p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
- if (p == NULL)
- return FALSE;
- htab->glink_eh_frame->contents = p;
- last_fde = p;
-
- htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
-
- memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
- /* CIE length (rewrite in case little-endian). */
- last_fde_len = sizeof (glink_eh_frame_cie) - 4;
- bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
- p += sizeof (glink_eh_frame_cie);
+ /* Build the stubs as directed by the stub hash table. */
+ bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
- for (stub_sec = htab->params->stub_bfd->sections;
- stub_sec != NULL;
- stub_sec = stub_sec->next)
- if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
+ for (group = htab->group; group != NULL; group = group->next)
+ if (group->needs_save_res)
+ {
+ stub_sec = group->stub_sec;
+ memcpy (stub_sec->contents + stub_sec->size, htab->sfpr->contents,
+ htab->sfpr->size);
+ if (htab->params->emit_stub_syms)
{
- last_fde = p;
- last_fde_len = 16;
- /* FDE length. */
- bfd_put_32 (htab->elf.dynobj, 16, p);
- p += 4;
- /* CIE pointer. */
- val = p - htab->glink_eh_frame->contents;
- bfd_put_32 (htab->elf.dynobj, val, p);
- p += 4;
- /* Offset to stub section. */
- val = (stub_sec->output_section->vma
- + stub_sec->output_offset);
- val -= (htab->glink_eh_frame->output_section->vma
- + htab->glink_eh_frame->output_offset);
- val -= p - htab->glink_eh_frame->contents;
- if (val + 0x80000000 > 0xffffffff)
- {
- info->callbacks->einfo
- (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
- stub_sec->name);
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++)
+ if (!sfpr_define (info, &save_res_funcs[i], stub_sec))
return FALSE;
- }
- bfd_put_32 (htab->elf.dynobj, val, p);
- p += 4;
- /* stub section size. */
- bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p);
- p += 4;
- /* Augmentation. */
- p += 1;
- /* Pad. */
- p += 3;
}
- if (htab->glink != NULL && htab->glink->size != 0)
- {
- last_fde = p;
- last_fde_len = 20;
- /* FDE length. */
- bfd_put_32 (htab->elf.dynobj, 20, p);
- p += 4;
- /* CIE pointer. */
- val = p - htab->glink_eh_frame->contents;
- bfd_put_32 (htab->elf.dynobj, val, p);
- p += 4;
- /* Offset to .glink. */
- val = (htab->glink->output_section->vma
- + htab->glink->output_offset
- + 8);
- val -= (htab->glink_eh_frame->output_section->vma
- + htab->glink_eh_frame->output_offset);
- val -= p - htab->glink_eh_frame->contents;
- if (val + 0x80000000 > 0xffffffff)
- {
- info->callbacks->einfo
- (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
- htab->glink->name);
- return FALSE;
- }
- bfd_put_32 (htab->elf.dynobj, val, p);
- p += 4;
- /* .glink size. */
- bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
- p += 4;
- /* Augmentation. */
- p += 1;
-
- *p++ = DW_CFA_advance_loc + 1;
- *p++ = DW_CFA_register;
- *p++ = 65;
- *p++ = 12;
- *p++ = DW_CFA_advance_loc + 4;
- *p++ = DW_CFA_restore_extended;
- *p++ = 65;
- }
- /* Subsume any padding into the last FDE if user .eh_frame
- sections are aligned more than glink_eh_frame. Otherwise any
- zero padding will be seen as a terminator. */
- size = p - htab->glink_eh_frame->contents;
- align = 1;
- align <<= htab->glink_eh_frame->output_section->alignment_power;
- align -= 1;
- pad = ((size + align) & ~align) - size;
- htab->glink_eh_frame->size = size + pad;
- bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
- }
-
- /* Build the stubs as directed by the stub hash table. */
- bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
+ stub_sec->size += htab->sfpr->size;
+ }
if (htab->relbrlt != NULL)
htab->relbrlt->reloc_count = 0;
if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
stub_sec->size = ((stub_sec->size
+ (1 << htab->params->plt_stub_align) - 1)
- & (-1 << htab->params->plt_stub_align));
+ & -(1 << htab->params->plt_stub_align));
for (stub_sec = htab->params->stub_bfd->sections;
stub_sec != NULL;
if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
{
stub_sec_count += 1;
- if (stub_sec->rawsize != stub_sec->size)
+ if (stub_sec->rawsize != stub_sec->size
+ && (htab->stub_iteration <= STUB_SHRINK_ITER
+ || stub_sec->rawsize < stub_sec->size))
break;
}
+ /* Note that the glink_eh_frame check here is not only testing that
+ the generated size matched the calculated size but also that
+ bfd_elf_discard_info didn't make any changes to the section. */
if (stub_sec != NULL
|| (htab->glink_eh_frame != NULL
&& htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
Elf_Internal_Rela *rel;
+ Elf_Internal_Rela *wrel;
Elf_Internal_Rela *relend;
Elf_Internal_Rela outrel;
bfd_byte *loc;
sym_hashes = elf_sym_hashes (input_bfd);
is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
- rel = relocs;
+ rel = wrel = relocs;
relend = relocs + input_section->reloc_count;
- for (; rel < relend; rel++)
+ for (; rel < relend; wrel++, rel++)
{
enum elf_ppc64_reloc_type r_type;
bfd_vma addend;
struct ppc_stub_hash_entry *stub_entry;
bfd_vma max_br_offset;
bfd_vma from;
- const Elf_Internal_Rela orig_rel = *rel;
+ Elf_Internal_Rela orig_rel;
reloc_howto_type *howto;
struct reloc_howto_struct alt_howto;
+ again:
+ orig_rel = *rel;
+
r_type = ELF64_R_TYPE (rel->r_info);
r_symndx = ELF64_R_SYM (rel->r_info);
symbol of the previous ADDR64 reloc. The symbol gives us the
proper TOC base to use. */
if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
- && rel != relocs
- && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
+ && wrel != relocs
+ && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64
&& is_opd)
- r_symndx = ELF64_R_SYM (rel[-1].r_info);
+ r_symndx = ELF64_R_SYM (wrel[-1].r_info);
sym = NULL;
sec = NULL;
opd = get_opd_info (sec);
if (opd != NULL && opd->adjust != NULL)
{
- long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
+ long adjust = opd->adjust[OPD_NDX (sym->st_value
+ + rel->r_addend)];
if (adjust == -1)
relocation = 0;
else
h = (struct ppc_link_hash_entry *) h_elf;
if (sec != NULL && discarded_section (sec))
- RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
- rel, 1, relend,
- ppc64_elf_howto_table[r_type], 0,
- contents);
+ {
+ _bfd_clear_contents (ppc64_elf_howto_table[r_type],
+ input_bfd, input_section,
+ contents + rel->r_offset);
+ wrel->r_offset = rel->r_offset;
+ wrel->r_info = 0;
+ wrel->r_addend = 0;
+
+ /* For ld -r, remove relocations in debug sections against
+ sections defined in discarded sections. Not done for
+ non-debug to preserve relocs in .eh_frame which the
+ eh_frame editing code expects to be present. */
+ if (bfd_link_relocatable (info)
+ && (input_section->flags & SEC_DEBUGGING))
+ wrel--;
- if (info->relocatable)
- continue;
+ continue;
+ }
+
+ if (bfd_link_relocatable (info))
+ goto copy_reloc;
if (h != NULL && &h->elf == htab->elf.hgot)
{
- relocation = (TOCstart
- + htab->stub_group[input_section->id].toc_off);
+ relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
sec = bfd_abs_section_ptr;
unresolved_reloc = FALSE;
}
&& (tls_mask & TLS_TPREL) == 0)
{
toctprel:
- insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
+ insn = bfd_get_32 (output_bfd,
+ contents + rel->r_offset - d_offset);
insn &= 31 << 21;
insn |= 0x3c0d0000; /* addis 0,13,0 */
- bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
+ bfd_put_32 (output_bfd, insn,
+ contents + rel->r_offset - d_offset);
r_type = R_PPC64_TPREL16_HA;
if (toc_symndx != 0)
{
rel->r_addend = toc_addend;
/* We changed the symbol. Start over in order to
get h, sym, sec etc. right. */
- rel--;
- continue;
+ goto again;
}
else
rel->r_info = ELF64_R_INFO (r_symndx, r_type);
rel->r_addend = toc_addend;
/* We changed the symbol. Start over in order to
get h, sym, sec etc. right. */
- rel--;
- continue;
+ goto again;
}
else
rel->r_info = ELF64_R_INFO (r_symndx, r_type);
htab->tls_get_addr,
htab->tls_get_addr_fd))
offset = rel[1].r_offset;
+ /* We read the low GOT_TLS (or TOC16) insn because we
+ need to keep the destination reg. It may be
+ something other than the usual r3, and moved to r3
+ before the call by intervening code. */
+ insn1 = bfd_get_32 (output_bfd,
+ contents + rel->r_offset - d_offset);
if ((tls_mask & tls_gd) != 0)
{
/* IE */
- insn1 = bfd_get_32 (output_bfd,
- contents + rel->r_offset - d_offset);
- insn1 &= (1 << 26) - (1 << 2);
+ insn1 &= (0x1f << 21) | (0x1f << 16);
insn1 |= 58 << 26; /* ld */
insn2 = 0x7c636a14; /* add 3,3,13 */
if (offset != (bfd_vma) -1)
else
{
/* LE */
- insn1 = 0x3c6d0000; /* addis 3,13,0 */
+ insn1 &= 0x1f << 21;
+ insn1 |= 0x3c0d0000; /* addis r,13,0 */
insn2 = 0x38630000; /* addi 3,3,0 */
if (tls_gd == 0)
{
{
/* We changed the symbol. Start over in order
to get h, sym, sec etc. right. */
- rel--;
- continue;
+ goto again;
}
}
break;
}
bfd_put_32 (output_bfd, insn2, contents + offset);
if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
- {
- rel--;
- continue;
- }
+ goto again;
}
break;
insn2 = NOP;
}
bfd_put_32 (output_bfd, insn2, contents + offset);
- rel--;
- continue;
+ goto again;
}
break;
}
break;
+ case R_PPC64_ENTRY:
+ relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
+ if (!bfd_link_pic (info)
+ && !info->traditional_format
+ && relocation + 0x80008000 <= 0xffffffff)
+ {
+ unsigned int insn1, insn2;
+
+ insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset);
+ insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
+ if ((insn1 & ~0xfffc) == LD_R2_0R12
+ && insn2 == ADD_R2_R2_R12)
+ {
+ bfd_put_32 (output_bfd,
+ LIS_R2 + PPC_HA (relocation),
+ contents + rel->r_offset);
+ bfd_put_32 (output_bfd,
+ ADDI_R2_R2 + PPC_LO (relocation),
+ contents + rel->r_offset + 4);
+ }
+ }
+ else
+ {
+ relocation -= (rel->r_offset
+ + input_section->output_offset
+ + input_section->output_section->vma);
+ if (relocation + 0x80008000 <= 0xffffffff)
+ {
+ unsigned int insn1, insn2;
+
+ insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset);
+ insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
+ if ((insn1 & ~0xfffc) == LD_R2_0R12
+ && insn2 == ADD_R2_R2_R12)
+ {
+ bfd_put_32 (output_bfd,
+ ADDIS_R2_R12 + PPC_HA (relocation),
+ contents + rel->r_offset);
+ bfd_put_32 (output_bfd,
+ ADDI_R2_R2 + PPC_LO (relocation),
+ contents + rel->r_offset + 4);
+ }
+ }
+ }
+ break;
+
case R_PPC64_REL16_HA:
/* If we are generating a non-PIC executable, edit
. 0: addis 2,12,.TOC.-0b@ha
. lis 2,.TOC.@ha
. addi 2,2,.TOC.@l
if .TOC. is in range. */
- if (!info->shared
+ if (!bfd_link_pic (info)
&& !info->traditional_format
+ && !htab->opd_abi
+ && rel->r_addend == d_offset
&& h != NULL && &h->elf == htab->elf.hgot
&& rel + 1 < relend
&& rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
bfd_vma offset = rel->r_offset - d_offset;
insn1 = bfd_get_32 (output_bfd, contents + offset);
insn2 = bfd_get_32 (output_bfd, contents + offset + 4);
- if ((insn1 & 0xffff0000) == 0x3c4c0000 /* addis 2,12 */
- && (insn2 & 0xffff0000) == 0x38420000 /* addi 2,2 */)
+ if ((insn1 & 0xffff0000) == ADDIS_R2_R12
+ && (insn2 & 0xffff0000) == ADDI_R2_R2)
{
r_type = R_PPC64_ADDR16_HA;
rel->r_info = ELF64_R_INFO (r_symndx, r_type);
rel->r_addend -= d_offset;
rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
rel[1].r_addend -= d_offset + 4;
- bfd_put_32 (output_bfd, 0x3c400000, contents + offset);
+ bfd_put_32 (output_bfd, LIS_R2, contents + offset);
}
}
break;
if (h != NULL
&& (h == htab->tls_get_addr_fd
|| h == htab->tls_get_addr)
- && !htab->params->no_tls_get_addr_opt)
+ && htab->params->tls_get_addr_opt)
{
/* Special stub used, leave nop alone. */
}
if (!can_plt_call)
{
- info->callbacks->einfo
- (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
- "recompile with -fPIC\n"),
- input_bfd, input_section, rel->r_offset, sym_name);
+ if (stub_entry->stub_type == ppc_stub_plt_call
+ || stub_entry->stub_type == ppc_stub_plt_call_r2save)
+ info->callbacks->einfo
+ (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
+ "recompile with -fPIC\n"),
+ input_bfd, input_section, rel->r_offset, sym_name);
+ else
+ info->callbacks->einfo
+ (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
+ "(-mcmodel=small toc adjust stub)\n"),
+ input_bfd, input_section, rel->r_offset, sym_name);
bfd_set_error (bfd_error_bad_value);
ret = FALSE;
{
/* Munge up the value and addend so that we call the stub
rather than the procedure directly. */
- relocation = (stub_entry->stub_offset
- + stub_entry->stub_sec->output_offset
- + stub_entry->stub_sec->output_section->vma);
+ asection *stub_sec = stub_entry->group->stub_sec;
+
+ if (stub_entry->stub_type == ppc_stub_save_res)
+ relocation += (stub_sec->output_offset
+ + stub_sec->output_section->vma
+ + stub_sec->size - htab->sfpr->size
+ - htab->sfpr->output_offset
+ - htab->sfpr->output_section->vma);
+ else
+ relocation = (stub_entry->stub_offset
+ + stub_sec->output_offset
+ + stub_sec->output_section->vma);
addend = 0;
reloc_dest = DEST_STUB;
&& addend == 0)
{
bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
- continue;
+ goto copy_reloc;
}
break;
}
bfd_set_error (bfd_error_bad_value);
ret = FALSE;
- continue;
+ goto copy_reloc;
case R_PPC64_NONE:
case R_PPC64_TLS:
case R_PPC64_TOCSAVE:
case R_PPC64_GNU_VTINHERIT:
case R_PPC64_GNU_VTENTRY:
- continue;
+ case R_PPC64_ENTRY:
+ goto copy_reloc;
/* GOT16 relocations. Like an ADDR16 using the symbol's
address in the GOT as relocation value instead of the
if (h != NULL)
{
bfd_boolean dyn = htab->elf.dynamic_sections_created;
- if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
+ if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info),
&h->elf)
- || (info->shared
+ || (bfd_link_pic (info)
&& SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
/* This is actually a static link, or it is a
-Bsymbolic link and the symbol is defined
: ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
if (ifunc)
relgot = htab->elf.irelplt;
- else if ((info->shared || indx != 0)
+ else if ((bfd_link_pic (info) || indx != 0)
&& (h == NULL
|| (tls_type == (TLS_TLS | TLS_LD)
&& !h->elf.def_dynamic)
{
outrel.r_addend += relocation;
if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
- outrel.r_addend -= htab->elf.tls_sec->vma;
+ {
+ if (htab->elf.tls_sec == NULL)
+ outrel.r_addend = 0;
+ else
+ outrel.r_addend -= htab->elf.tls_sec->vma;
+ }
}
loc = relgot->contents;
loc += (relgot->reloc_count++
relocation = 1;
else if (tls_type != 0)
{
- relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
- if (tls_type == (TLS_TLS | TLS_TPREL))
- relocation += DTP_OFFSET - TP_OFFSET;
+ if (htab->elf.tls_sec == NULL)
+ relocation = 0;
+ else
+ {
+ relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
+ if (tls_type == (TLS_TLS | TLS_TPREL))
+ relocation += DTP_OFFSET - TP_OFFSET;
+ }
if (tls_type == (TLS_TLS | TLS_GD))
{
abort ();
relocation = got->output_section->vma + got->output_offset + off;
- addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
+ addend = -(TOCstart + htab->sec_info[input_section->id].toc_off);
}
break;
case R_PPC64_PLT64:
/* Relocation is to the entry for this symbol in the
procedure linkage table. */
+ {
+ struct plt_entry **plt_list = NULL;
+ if (h != NULL)
+ plt_list = &h->elf.plt.plist;
+ else if (local_got_ents != NULL)
+ {
+ struct plt_entry **local_plt = (struct plt_entry **)
+ (local_got_ents + symtab_hdr->sh_info);
+ unsigned char *local_got_tls_masks = (unsigned char *)
+ (local_plt + symtab_hdr->sh_info);
+ if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
+ plt_list = local_plt + r_symndx;
+ }
+ if (plt_list)
+ {
+ struct plt_entry *ent;
- /* Resolve a PLT reloc against a local symbol directly,
- without using the procedure linkage table. */
- if (h == NULL)
- break;
-
- /* It's possible that we didn't make a PLT entry for this
- symbol. This happens when statically linking PIC code,
- or when using -Bsymbolic. Go find a match if there is a
- PLT entry. */
- if (htab->elf.splt != NULL)
- {
- struct plt_entry *ent;
- for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
- if (ent->plt.offset != (bfd_vma) -1
- && ent->addend == orig_rel.r_addend)
- {
- relocation = (htab->elf.splt->output_section->vma
- + htab->elf.splt->output_offset
- + ent->plt.offset);
- unresolved_reloc = FALSE;
- break;
- }
- }
+ for (ent = *plt_list; ent != NULL; ent = ent->next)
+ if (ent->plt.offset != (bfd_vma) -1
+ && ent->addend == orig_rel.r_addend)
+ {
+ asection *plt;
+
+ plt = htab->elf.splt;
+ if (!htab->elf.dynamic_sections_created
+ || h == NULL
+ || h->elf.dynindx == -1)
+ plt = htab->elf.iplt;
+ relocation = (plt->output_section->vma
+ + plt->output_offset
+ + ent->plt.offset);
+ addend = 0;
+ unresolved_reloc = FALSE;
+ break;
+ }
+ }
+ }
break;
case R_PPC64_TOC:
/* Relocation value is TOC base. */
relocation = TOCstart;
if (r_symndx == STN_UNDEF)
- relocation += htab->stub_group[input_section->id].toc_off;
+ relocation += htab->sec_info[input_section->id].toc_off;
else if (unresolved_reloc)
;
- else if (sec != NULL && sec->id <= htab->top_id)
- relocation += htab->stub_group[sec->id].toc_off;
+ else if (sec != NULL && sec->id < htab->sec_info_arr_size)
+ relocation += htab->sec_info[sec->id].toc_off;
else
unresolved_reloc = TRUE;
goto dodyn;
case R_PPC64_TOC16_DS:
case R_PPC64_TOC16_LO_DS:
case R_PPC64_TOC16_HA:
- addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
+ addend -= TOCstart + htab->sec_info[input_section->id].toc_off;
break;
/* Relocate against the beginning of the section. */
case R_PPC64_REL16_LO:
case R_PPC64_REL16_HI:
case R_PPC64_REL16_HA:
+ case R_PPC64_REL16DX_HA:
break;
case R_PPC64_REL14:
bfd_put_32 (output_bfd, insn, p);
break;
}
- addend -= htab->elf.tls_sec->vma + TP_OFFSET;
- if (info->shared)
+ if (htab->elf.tls_sec != NULL)
+ addend -= htab->elf.tls_sec->vma + TP_OFFSET;
+ if (bfd_link_pic (info))
/* The TPREL16 relocs shouldn't really be used in shared
libs as they will result in DT_TEXTREL being set, but
support them anyway. */
case R_PPC64_DTPREL16_HIGHERA:
case R_PPC64_DTPREL16_HIGHEST:
case R_PPC64_DTPREL16_HIGHESTA:
- addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
+ if (htab->elf.tls_sec != NULL)
+ addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
break;
case R_PPC64_ADDR64_LOCAL:
goto dodyn;
case R_PPC64_TPREL64:
- addend -= htab->elf.tls_sec->vma + TP_OFFSET;
+ if (htab->elf.tls_sec != NULL)
+ addend -= htab->elf.tls_sec->vma + TP_OFFSET;
goto dodyn;
case R_PPC64_DTPREL64:
- addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
+ if (htab->elf.tls_sec != NULL)
+ addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
/* Fall thru */
/* Relocations that may need to be propagated if this is a
if (NO_OPD_RELOCS && is_opd)
break;
- if ((info->shared
- && (h == NULL
- || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
- || h->elf.root.type != bfd_link_hash_undefweak)
- && (must_be_dyn_reloc (info, r_type)
- || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
- || (ELIMINATE_COPY_RELOCS
- && !info->shared
- && h != NULL
- && h->elf.dynindx != -1
- && !h->elf.non_got_ref
- && !h->elf.def_regular)
- || (!info->shared
- && (h != NULL
- ? h->elf.type == STT_GNU_IFUNC
- : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
+ if (bfd_link_pic (info)
+ ? ((h != NULL && pc_dynrelocs (h))
+ || must_be_dyn_reloc (info, r_type))
+ : (h != NULL
+ ? h->dyn_relocs != NULL
+ : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
{
bfd_boolean skip, relocate;
asection *sreloc;
bfd_set_error (bfd_error_invalid_operation);
ret = FALSE;
- continue;
+ goto copy_reloc;
}
/* Multi-instruction sequences that access the TOC can be
break;
case R_PPC64_REL16_HA:
+ case R_PPC64_REL16DX_HA:
case R_PPC64_ADDR16_HA:
case R_PPC64_ADDR16_HIGHA:
case R_PPC64_ADDR16_HIGHERA:
case R_PPC64_DTPREL16_LO_DS:
insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
mask = 3;
- /* If this reloc is against an lq insn, then the value must be
- a multiple of 16. This is somewhat of a hack, but the
- "correct" way to do this by defining _DQ forms of all the
- _DS relocs bloats all reloc switches in this file. It
- doesn't seem to make much sense to use any of these relocs
- in data, so testing the insn should be safe. */
- if ((insn & (0x3f << 26)) == (56u << 26))
+ /* If this reloc is against an lq, lxv, or stxv insn, then
+ the value must be a multiple of 16. This is somewhat of
+ a hack, but the "correct" way to do this by defining _DQ
+ forms of all the _DS relocs bloats all reloc switches in
+ this file. It doesn't make much sense to use these
+ relocs in data, so testing the insn should be safe. */
+ if ((insn & (0x3f << 26)) == (56u << 26)
+ || ((insn & (0x3f << 26)) == (61u << 26) && (insn & 3) == 1))
mask = 15;
- if (((relocation + addend) & mask) != 0)
+ relocation += addend;
+ addend = insn & (mask ^ 3);
+ if ((relocation & mask) != 0)
{
+ relocation ^= relocation & mask;
info->callbacks->einfo
(_("%P: %H: error: %s not a multiple of %u\n"),
input_bfd, input_section, rel->r_offset,
mask + 1);
bfd_set_error (bfd_error_bad_value);
ret = FALSE;
- continue;
+ goto copy_reloc;
}
break;
}
}
}
- r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
- rel->r_offset, relocation, addend);
+ if (r_type == R_PPC64_REL16DX_HA)
+ {
+ /* Split field reloc isn't handled by _bfd_final_link_relocate. */
+ if (rel->r_offset + 4 > input_section->size)
+ r = bfd_reloc_outofrange;
+ else
+ {
+ relocation += addend;
+ relocation -= (rel->r_offset
+ + input_section->output_offset
+ + input_section->output_section->vma);
+ relocation = (bfd_signed_vma) relocation >> 16;
+ insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
+ insn &= ~0x1fffc1;
+ insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
+ bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
+ r = bfd_reloc_ok;
+ if (relocation + 0x8000 > 0xffff)
+ r = bfd_reloc_overflow;
+ }
+ }
+ else
+ r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
+ rel->r_offset, relocation, addend);
if (r != bfd_reloc_ok)
{
if (r == bfd_reloc_overflow)
{
- if (warned)
- continue;
- if (h != NULL
- && h->elf.root.type == bfd_link_hash_undefweak
- && howto->pc_relative)
- {
- /* Assume this is a call protected by other code that
- detects the symbol is undefined. If this is the case,
- we can safely ignore the overflow. If not, the
- program is hosed anyway, and a little warning isn't
- going to help. */
-
- continue;
- }
-
- if (!((*info->callbacks->reloc_overflow)
- (info, &h->elf.root, sym_name,
- reloc_name, orig_rel.r_addend,
- input_bfd, input_section, rel->r_offset)))
- return FALSE;
+ /* On code like "if (foo) foo();" don't report overflow
+ on a branch to zero when foo is undefined. */
+ if (!warned
+ && (reloc_dest == DEST_STUB
+ || !(h != NULL
+ && (h->elf.root.type == bfd_link_hash_undefweak
+ || h->elf.root.type == bfd_link_hash_undefined)
+ && is_branch_reloc (r_type))))
+ info->callbacks->reloc_overflow (info, &h->elf.root,
+ sym_name, reloc_name,
+ orig_rel.r_addend,
+ input_bfd, input_section,
+ rel->r_offset);
}
else
{
if (more_info != NULL)
free (more_info);
}
+ copy_reloc:
+ if (wrel != rel)
+ *wrel = *rel;
+ }
+
+ if (wrel != rel)
+ {
+ Elf_Internal_Shdr *rel_hdr;
+ size_t deleted = rel - wrel;
+
+ rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
+ rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
+ if (rel_hdr->sh_size == 0)
+ {
+ /* It is too late to remove an empty reloc section. Leave
+ one NONE reloc.
+ ??? What is wrong with an empty section??? */
+ rel_hdr->sh_size = rel_hdr->sh_entsize;
+ deleted -= 1;
+ }
+ rel_hdr = _bfd_elf_single_rel_hdr (input_section);
+ rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
+ input_section->reloc_count -= deleted;
}
/* If we're emitting relocations, then shortly after this function
adjusted. Worse, reloc symbol indices will be for the output
file rather than the input. Save a copy of the relocs for
opd_entry_value. */
- if (is_opd && (info->emitrelocations || info->relocatable))
+ if (is_opd && (info->emitrelocations || bfd_link_relocatable (info)))
{
bfd_size_type amt;
amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
return 1;
value = elfsym->st_value - input_sec->output_offset;
- if (!info->relocatable)
+ if (!bfd_link_relocatable (info))
value -= input_sec->output_section->vma;
- adjust = opd->adjust[value / 8];
+ adjust = opd->adjust[OPD_NDX (value)];
if (adjust == -1)
return 2;
NULL))
return FALSE;
-
if (htab->glink_eh_frame != NULL
- && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
- && !_bfd_elf_write_section_eh_frame (output_bfd, info,
- htab->glink_eh_frame,
- htab->glink_eh_frame->contents))
- return FALSE;
+ && htab->glink_eh_frame->size != 0)
+ {
+ bfd_vma val;
+ bfd_byte *p;
+ asection *stub_sec;
+
+ p = htab->glink_eh_frame->contents + sizeof (glink_eh_frame_cie);
+ for (stub_sec = htab->params->stub_bfd->sections;
+ stub_sec != NULL;
+ stub_sec = stub_sec->next)
+ if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
+ {
+ /* FDE length. */
+ p += 4;
+ /* CIE pointer. */
+ p += 4;
+ /* Offset to stub section. */
+ val = (stub_sec->output_section->vma
+ + stub_sec->output_offset);
+ val -= (htab->glink_eh_frame->output_section->vma
+ + htab->glink_eh_frame->output_offset
+ + (p - htab->glink_eh_frame->contents));
+ if (val + 0x80000000 > 0xffffffff)
+ {
+ info->callbacks->einfo
+ (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
+ stub_sec->name);
+ return FALSE;
+ }
+ bfd_put_32 (dynobj, val, p);
+ p += 4;
+ /* stub section size. */
+ p += 4;
+ /* Augmentation. */
+ p += 1;
+ /* Pad. */
+ p += 7;
+ }
+ if (htab->glink != NULL && htab->glink->size != 0)
+ {
+ /* FDE length. */
+ p += 4;
+ /* CIE pointer. */
+ p += 4;
+ /* Offset to .glink. */
+ val = (htab->glink->output_section->vma
+ + htab->glink->output_offset
+ + 8);
+ val -= (htab->glink_eh_frame->output_section->vma
+ + htab->glink_eh_frame->output_offset
+ + (p - htab->glink_eh_frame->contents));
+ if (val + 0x80000000 > 0xffffffff)
+ {
+ info->callbacks->einfo
+ (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
+ htab->glink->name);
+ return FALSE;
+ }
+ bfd_put_32 (dynobj, val, p);
+ p += 4;
+ /* .glink size. */
+ p += 4;
+ /* Augmentation. */
+ p += 1;
+ /* Ops. */
+ p += 7;
+ }
+
+ if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
+ && !_bfd_elf_write_section_eh_frame (output_bfd, info,
+ htab->glink_eh_frame,
+ htab->glink_eh_frame->contents))
+ return FALSE;
+ }
/* We need to handle writing out multiple GOT sections ourselves,
since we didn't add them to DYNOBJ. We know dynobj is the first
projects / deliverable / binutils-gdb.git / blobdiff