/* IBM S/390-specific support for 64-bit ELF
- Copyright 2000, 2001, 2002 Free Software Foundation, Inc.
+ Copyright 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
Contributed Martin Schwidefsky (schwidefsky@de.ibm.com).
This file is part of BFD, the Binary File Descriptor library.
static bfd_boolean elf_s390_create_dynamic_sections
PARAMS((bfd *, struct bfd_link_info *));
static void elf_s390_copy_indirect_symbol
- PARAMS ((struct elf_backend_data *, struct elf_link_hash_entry *,
+ PARAMS ((const struct elf_backend_data *, struct elf_link_hash_entry *,
struct elf_link_hash_entry *));
static bfd_boolean elf_s390_check_relocs
PARAMS ((bfd *, struct bfd_link_info *, asection *,
PARAMS ((const Elf_Internal_Rela *));
static bfd_boolean elf_s390_finish_dynamic_sections
PARAMS ((bfd *, struct bfd_link_info *));
+static bfd_boolean elf_s390_mkobject
+ PARAMS ((bfd *));
static bfd_boolean elf_s390_object_p
PARAMS ((bfd *));
+static int elf_s390_tls_transition
+ PARAMS ((struct bfd_link_info *, int, int));
+static bfd_reloc_status_type s390_tls_reloc
+ PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
+static bfd_vma dtpoff_base
+ PARAMS ((struct bfd_link_info *));
+static bfd_vma tpoff
+ PARAMS ((struct bfd_link_info *, bfd_vma));
+static void invalid_tls_insn
+ PARAMS ((bfd *, asection *, Elf_Internal_Rela *));
+static bfd_reloc_status_type s390_elf_ldisp_reloc
+ PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
#include "elf/s390.h"
bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
- HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
+ HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
HOWTO(R_390_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_390_PLTOFF64", FALSE, 0,MINUS_ONE, FALSE),
+ HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
+ s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
+ HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
+ s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
+ HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
+ s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
+ EMPTY_HOWTO (R_390_TLS_GD32), /* Empty entry for R_390_TLS_GD32. */
+ HOWTO(R_390_TLS_GD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_GD64", FALSE, 0, MINUS_ONE, FALSE),
+ HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
+ bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
+ EMPTY_HOWTO (R_390_TLS_GOTIE32), /* Empty entry for R_390_TLS_GOTIE32. */
+ HOWTO(R_390_TLS_GOTIE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_GOTIE64", FALSE, 0, MINUS_ONE, FALSE),
+ EMPTY_HOWTO (R_390_TLS_LDM32), /* Empty entry for R_390_TLS_LDM32. */
+ HOWTO(R_390_TLS_LDM64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_LDM64", FALSE, 0, MINUS_ONE, FALSE),
+ EMPTY_HOWTO (R_390_TLS_IE32), /* Empty entry for R_390_TLS_IE32. */
+ HOWTO(R_390_TLS_IE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_IE64", FALSE, 0, MINUS_ONE, FALSE),
+ HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, MINUS_ONE, TRUE),
+ EMPTY_HOWTO (R_390_TLS_LE32), /* Empty entry for R_390_TLS_LE32. */
+ HOWTO(R_390_TLS_LE64, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_LE64", FALSE, 0, MINUS_ONE, FALSE),
+ EMPTY_HOWTO (R_390_TLS_LDO32), /* Empty entry for R_390_TLS_LDO32. */
+ HOWTO(R_390_TLS_LDO64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_LDO64", FALSE, 0, MINUS_ONE, FALSE),
+ HOWTO(R_390_TLS_DTPMOD, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, MINUS_ONE, FALSE),
+ HOWTO(R_390_TLS_DTPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, MINUS_ONE, FALSE),
+ HOWTO(R_390_TLS_TPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, MINUS_ONE, FALSE),
+ HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
+ s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
+ HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
+ s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
+ HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
+ s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
+ HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
+ s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
};
/* GNU extension to record C++ vtable hierarchy. */
return &elf_howto_table[(int) R_390_PLTOFF32];
case BFD_RELOC_390_PLTOFF64:
return &elf_howto_table[(int) R_390_PLTOFF64];
+ case BFD_RELOC_390_TLS_LOAD:
+ return &elf_howto_table[(int) R_390_TLS_LOAD];
+ case BFD_RELOC_390_TLS_GDCALL:
+ return &elf_howto_table[(int) R_390_TLS_GDCALL];
+ case BFD_RELOC_390_TLS_LDCALL:
+ return &elf_howto_table[(int) R_390_TLS_LDCALL];
+ case BFD_RELOC_390_TLS_GD64:
+ return &elf_howto_table[(int) R_390_TLS_GD64];
+ case BFD_RELOC_390_TLS_GOTIE12:
+ return &elf_howto_table[(int) R_390_TLS_GOTIE12];
+ case BFD_RELOC_390_TLS_GOTIE64:
+ return &elf_howto_table[(int) R_390_TLS_GOTIE64];
+ case BFD_RELOC_390_TLS_LDM64:
+ return &elf_howto_table[(int) R_390_TLS_LDM64];
+ case BFD_RELOC_390_TLS_IE64:
+ return &elf_howto_table[(int) R_390_TLS_IE64];
+ case BFD_RELOC_390_TLS_IEENT:
+ return &elf_howto_table[(int) R_390_TLS_IEENT];
+ case BFD_RELOC_390_TLS_LE64:
+ return &elf_howto_table[(int) R_390_TLS_LE64];
+ case BFD_RELOC_390_TLS_LDO64:
+ return &elf_howto_table[(int) R_390_TLS_LDO64];
+ case BFD_RELOC_390_TLS_DTPMOD:
+ return &elf_howto_table[(int) R_390_TLS_DTPMOD];
+ case BFD_RELOC_390_TLS_DTPOFF:
+ return &elf_howto_table[(int) R_390_TLS_DTPOFF];
+ case BFD_RELOC_390_TLS_TPOFF:
+ return &elf_howto_table[(int) R_390_TLS_TPOFF];
+ case BFD_RELOC_390_20:
+ return &elf_howto_table[(int) R_390_20];
+ case BFD_RELOC_390_GOT20:
+ return &elf_howto_table[(int) R_390_GOT20];
+ case BFD_RELOC_390_GOTPLT20:
+ return &elf_howto_table[(int) R_390_GOTPLT20];
+ case BFD_RELOC_390_TLS_GOTIE20:
+ return &elf_howto_table[(int) R_390_TLS_GOTIE20];
case BFD_RELOC_VTABLE_INHERIT:
return &elf64_s390_vtinherit_howto;
case BFD_RELOC_VTABLE_ENTRY:
}
}
+/* A relocation function which doesn't do anything. */
+static bfd_reloc_status_type
+s390_tls_reloc (abfd, reloc_entry, symbol, data, input_section,
+ output_bfd, error_message)
+ bfd *abfd ATTRIBUTE_UNUSED;
+ arelent *reloc_entry;
+ asymbol *symbol ATTRIBUTE_UNUSED;
+ PTR data ATTRIBUTE_UNUSED;
+ asection *input_section;
+ bfd *output_bfd;
+ char **error_message ATTRIBUTE_UNUSED;
+{
+ if (output_bfd)
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+}
+
+/* Handle the large displacement relocs. */
+static bfd_reloc_status_type
+s390_elf_ldisp_reloc (abfd, reloc_entry, symbol, data, input_section,
+ output_bfd, error_message)
+ bfd *abfd;
+ arelent *reloc_entry;
+ asymbol *symbol;
+ PTR data;
+ asection *input_section;
+ bfd *output_bfd;
+ char **error_message ATTRIBUTE_UNUSED;
+{
+ reloc_howto_type *howto = reloc_entry->howto;
+ bfd_vma relocation;
+ bfd_vma insn;
+
+ if (output_bfd != (bfd *) NULL
+ && (symbol->flags & BSF_SECTION_SYM) == 0
+ && (! howto->partial_inplace
+ || reloc_entry->addend == 0))
+ {
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+ }
+ if (output_bfd != NULL)
+ return bfd_reloc_continue;
+
+ if (reloc_entry->address > input_section->_cooked_size)
+ return bfd_reloc_outofrange;
+
+ relocation = (symbol->value
+ + symbol->section->output_section->vma
+ + symbol->section->output_offset);
+ relocation += reloc_entry->addend;
+ if (howto->pc_relative)
+ {
+ relocation -= (input_section->output_section->vma
+ + input_section->output_offset);
+ relocation -= reloc_entry->address;
+ }
+
+ insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
+ insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
+ bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
+
+ if ((bfd_signed_vma) relocation < - 0x80000
+ || (bfd_signed_vma) relocation > 0x7ffff)
+ return bfd_reloc_overflow;
+ else
+ return bfd_reloc_ok;
+}
+
static bfd_boolean
elf_s390_is_local_label_name (abfd, name)
bfd *abfd;
#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
+/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
+ copying dynamic variables from a shared lib into an app's dynbss
+ section, and instead use a dynamic relocation to point into the
+ shared lib. */
+#define ELIMINATE_COPY_RELOCS 1
+
/* The size in bytes of the first entry in the procedure linkage table. */
#define PLT_FIRST_ENTRY_SIZE 32
/* The size in bytes of an entry in the procedure linkage table. */
/* Number of GOTPLT references for a function. */
bfd_signed_vma gotplt_refcount;
+
+#define GOT_UNKNOWN 0
+#define GOT_NORMAL 1
+#define GOT_TLS_GD 2
+#define GOT_TLS_IE 3
+#define GOT_TLS_IE_NLT 3
+ unsigned char tls_type;
+};
+
+#define elf_s390_hash_entry(ent) \
+ ((struct elf_s390_link_hash_entry *)(ent))
+
+struct elf_s390_obj_tdata
+{
+ struct elf_obj_tdata root;
+
+ /* tls_type for each local got entry. */
+ char *local_got_tls_type;
};
+#define elf_s390_tdata(abfd) \
+ ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
+
+#define elf_s390_local_got_tls_type(abfd) \
+ (elf_s390_tdata (abfd)->local_got_tls_type)
+
+static bfd_boolean
+elf_s390_mkobject (abfd)
+ bfd *abfd;
+{
+ bfd_size_type amt = sizeof (struct elf_s390_obj_tdata);
+ abfd->tdata.any = bfd_zalloc (abfd, amt);
+ if (abfd->tdata.any == NULL)
+ return FALSE;
+ return TRUE;
+}
+
+static bfd_boolean
+elf_s390_object_p (abfd)
+ bfd *abfd;
+{
+ /* Allocate our special target data. */
+ struct elf_s390_obj_tdata *new_tdata;
+ bfd_size_type amt = sizeof (struct elf_s390_obj_tdata);
+ new_tdata = bfd_zalloc (abfd, amt);
+ if (new_tdata == NULL)
+ return FALSE;
+ new_tdata->root = *abfd->tdata.elf_obj_data;
+ abfd->tdata.any = new_tdata;
+ /* Set the right machine number for an s390 elf32 file. */
+ return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_64);
+}
+
/* s390 ELF linker hash table. */
struct elf_s390_link_hash_table
asection *sdynbss;
asection *srelbss;
+ union {
+ bfd_signed_vma refcount;
+ bfd_vma offset;
+ } tls_ldm_got;
+
/* Small local sym to section mapping cache. */
struct sym_sec_cache sym_sec;
};
eh = (struct elf_s390_link_hash_entry *) entry;
eh->dyn_relocs = NULL;
eh->gotplt_refcount = 0;
+ eh->tls_type = GOT_UNKNOWN;
}
return entry;
ret->srelplt = NULL;
ret->sdynbss = NULL;
ret->srelbss = NULL;
+ ret->tls_ldm_got.refcount = 0;
ret->sym_sec.abfd = NULL;
return &ret->elf.root;
static void
elf_s390_copy_indirect_symbol (bed, dir, ind)
- struct elf_backend_data *bed;
+ const struct elf_backend_data *bed;
struct elf_link_hash_entry *dir, *ind;
{
struct elf_s390_link_hash_entry *edir, *eind;
eind->dyn_relocs = NULL;
}
- _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
+ if (ind->root.type == bfd_link_hash_indirect
+ && dir->got.refcount <= 0)
+ {
+ edir->tls_type = eind->tls_type;
+ eind->tls_type = GOT_UNKNOWN;
+ }
+
+ if (ELIMINATE_COPY_RELOCS
+ && ind->root.type != bfd_link_hash_indirect
+ && (dir->elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0)
+ /* If called to transfer flags for a weakdef during processing
+ of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF.
+ We clear it ourselves for ELIMINATE_COPY_RELOCS. */
+ dir->elf_link_hash_flags |=
+ (ind->elf_link_hash_flags & (ELF_LINK_HASH_REF_DYNAMIC
+ | ELF_LINK_HASH_REF_REGULAR
+ | ELF_LINK_HASH_REF_REGULAR_NONWEAK));
+ else
+ _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
+}
+
+static int
+elf_s390_tls_transition (info, r_type, is_local)
+ struct bfd_link_info *info;
+ int r_type;
+ int is_local;
+{
+ if (info->shared)
+ return r_type;
+
+ switch (r_type)
+ {
+ case R_390_TLS_GD64:
+ case R_390_TLS_IE64:
+ if (is_local)
+ return R_390_TLS_LE64;
+ return R_390_TLS_IE64;
+ case R_390_TLS_GOTIE64:
+ if (is_local)
+ return R_390_TLS_LE64;
+ return R_390_TLS_GOTIE64;
+ case R_390_TLS_LDM64:
+ return R_390_TLS_LE64;
+ }
+
+ return r_type;
}
/* Look through the relocs for a section during the first phase, and
const Elf_Internal_Rela *rel_end;
asection *sreloc;
bfd_signed_vma *local_got_refcounts;
+ int tls_type, old_tls_type;
- if (info->relocateable)
+ if (info->relocatable)
return TRUE;
htab = elf_s390_hash_table (info);
rel_end = relocs + sec->reloc_count;
for (rel = relocs; rel < rel_end; rel++)
{
+ unsigned int r_type;
unsigned long r_symndx;
struct elf_link_hash_entry *h;
/* Create got section and local_got_refcounts array if they
are needed. */
- switch (ELF64_R_TYPE (rel->r_info))
+ r_type = elf_s390_tls_transition (info,
+ ELF64_R_TYPE (rel->r_info),
+ h == NULL);
+ switch (r_type)
{
case R_390_GOT12:
case R_390_GOT16:
+ case R_390_GOT20:
case R_390_GOT32:
case R_390_GOT64:
case R_390_GOTENT:
case R_390_GOTPLT12:
case R_390_GOTPLT16:
+ case R_390_GOTPLT20:
case R_390_GOTPLT32:
case R_390_GOTPLT64:
case R_390_GOTPLTENT:
+ case R_390_TLS_GD64:
+ case R_390_TLS_GOTIE12:
+ case R_390_TLS_GOTIE20:
+ case R_390_TLS_GOTIE64:
+ case R_390_TLS_IEENT:
+ case R_390_TLS_IE64:
+ case R_390_TLS_LDM64:
if (h == NULL
&& local_got_refcounts == NULL)
{
bfd_size_type size;
size = symtab_hdr->sh_info;
- size *= sizeof (bfd_signed_vma);
+ size *= (sizeof (bfd_signed_vma) + sizeof(char));
local_got_refcounts = ((bfd_signed_vma *)
bfd_zalloc (abfd, size));
if (local_got_refcounts == NULL)
return FALSE;
elf_local_got_refcounts (abfd) = local_got_refcounts;
+ elf_s390_local_got_tls_type (abfd)
+ = (char *) (local_got_refcounts + symtab_hdr->sh_info);
}
/* Fall through. */
case R_390_GOTOFF16:
}
}
- switch (ELF64_R_TYPE (rel->r_info))
+ switch (r_type)
{
- case R_390_GOT12:
- case R_390_GOT16:
- case R_390_GOT32:
- case R_390_GOT64:
- case R_390_GOTENT:
- /* This symbol requires a global offset table entry. */
- if (h != NULL)
- {
- h->got.refcount += 1;
- }
- else
- {
- local_got_refcounts[r_symndx] += 1;
- }
- /* Fall through */
-
case R_390_GOTOFF16:
case R_390_GOTOFF32:
case R_390_GOTOFF64:
case R_390_GOTPLT12:
case R_390_GOTPLT16:
+ case R_390_GOTPLT20:
case R_390_GOTPLT32:
case R_390_GOTPLT64:
case R_390_GOTPLTENT:
h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
h->plt.refcount += 1;
}
+ else
+ local_got_refcounts[r_symndx] += 1;
+ break;
+
+ case R_390_TLS_LDM64:
+ htab->tls_ldm_got.refcount += 1;
+ break;
+
+ case R_390_TLS_IE64:
+ case R_390_TLS_GOTIE12:
+ case R_390_TLS_GOTIE20:
+ case R_390_TLS_GOTIE64:
+ case R_390_TLS_IEENT:
+ if (info->shared)
+ info->flags |= DF_STATIC_TLS;
+ /* Fall through */
+
+ case R_390_GOT12:
+ case R_390_GOT16:
+ case R_390_GOT20:
+ case R_390_GOT32:
+ case R_390_GOT64:
+ case R_390_GOTENT:
+ case R_390_TLS_GD64:
+ /* This symbol requires a global offset table entry. */
+ switch (r_type)
+ {
+ default:
+ case R_390_GOT12:
+ case R_390_GOT16:
+ case R_390_GOT20:
+ case R_390_GOT32:
+ case R_390_GOTENT:
+ tls_type = GOT_NORMAL;
+ break;
+ case R_390_TLS_GD64:
+ tls_type = GOT_TLS_GD;
+ break;
+ case R_390_TLS_IE64:
+ case R_390_TLS_GOTIE64:
+ tls_type = GOT_TLS_IE;
+ break;
+ case R_390_TLS_GOTIE12:
+ case R_390_TLS_GOTIE20:
+ case R_390_TLS_IEENT:
+ tls_type = GOT_TLS_IE_NLT;
+ break;
+ }
+
+ if (h != NULL)
+ {
+ h->got.refcount += 1;
+ old_tls_type = elf_s390_hash_entry(h)->tls_type;
+ }
else
{
local_got_refcounts[r_symndx] += 1;
+ old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
+ }
+ /* If a TLS symbol is accessed using IE at least once,
+ there is no point to use dynamic model for it. */
+ if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
+ {
+ if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
+ {
+ (*_bfd_error_handler)
+ (_("%s: `%s' accessed both as normal and thread local symbol"),
+ bfd_archive_filename (abfd), h->root.root.string);
+ return FALSE;
+ }
+ if (old_tls_type > tls_type)
+ tls_type = old_tls_type;
}
- break;
+
+ if (old_tls_type != tls_type)
+ {
+ if (h != NULL)
+ elf_s390_hash_entry (h)->tls_type = tls_type;
+ else
+ elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
+ }
+
+ if (r_type != R_390_TLS_IE64)
+ break;
+ /* Fall through */
+
+ case R_390_TLS_LE64:
+ if (!info->shared)
+ break;
+ info->flags |= DF_STATIC_TLS;
+ /* Fall through */
case R_390_8:
case R_390_16:
|| h->root.type == bfd_link_hash_defweak
|| (h->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR) == 0))))
- || (!info->shared
+ || (ELIMINATE_COPY_RELOCS
+ && !info->shared
&& (sec->flags & SEC_ALLOC) != 0
&& h != NULL
&& (h->root.type == bfd_link_hash_defweak
struct elf_link_hash_entry **sym_hashes;
bfd_signed_vma *local_got_refcounts;
const Elf_Internal_Rela *rel, *relend;
- unsigned long r_symndx;
- struct elf_link_hash_entry *h;
elf_section_data (sec)->local_dynrel = NULL;
relend = relocs + sec->reloc_count;
for (rel = relocs; rel < relend; rel++)
{
+ unsigned long r_symndx;
+ unsigned int r_type;
+ struct elf_link_hash_entry *h = NULL;
+
r_symndx = ELF64_R_SYM (rel->r_info);
+ if (r_symndx >= symtab_hdr->sh_info)
+ {
+ struct elf_s390_link_hash_entry *eh;
+ struct elf_s390_dyn_relocs **pp;
+ struct elf_s390_dyn_relocs *p;
- if (r_symndx < symtab_hdr->sh_info)
- h = NULL;
- else
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ eh = (struct elf_s390_link_hash_entry *) h;
- switch (ELF64_R_TYPE (rel->r_info))
+ for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
+ if (p->sec == sec)
+ {
+ /* Everything must go for SEC. */
+ *pp = p->next;
+ break;
+ }
+ }
+
+ r_type = ELF64_R_TYPE (rel->r_info);
+ r_type = elf_s390_tls_transition (info, r_type, h != NULL);
+ switch (r_type)
{
+ case R_390_TLS_LDM64:
+ if (elf_s390_hash_table (info)->tls_ldm_got.refcount > 0)
+ elf_s390_hash_table (info)->tls_ldm_got.refcount -= 1;
+ break;
+
+ case R_390_TLS_GD64:
+ case R_390_TLS_IE64:
+ case R_390_TLS_GOTIE12:
+ case R_390_TLS_GOTIE20:
+ case R_390_TLS_GOTIE64:
+ case R_390_TLS_IEENT:
case R_390_GOT12:
case R_390_GOT16:
+ case R_390_GOT20:
case R_390_GOT32:
case R_390_GOT64:
case R_390_GOTOFF16:
local_got_refcounts[r_symndx] -= 1;
}
break;
-
+
+ case R_390_8:
+ case R_390_12:
+ case R_390_16:
+ case R_390_20:
+ case R_390_32:
+ case R_390_64:
+ case R_390_PC16:
+ case R_390_PC16DBL:
+ case R_390_PC32:
+ case R_390_PC32DBL:
+ case R_390_PC64:
+ if (info->shared)
+ break;
+ /* Fall through */
+
case R_390_PLT16DBL:
case R_390_PLT32:
case R_390_PLT32DBL:
case R_390_GOTPLT12:
case R_390_GOTPLT16:
+ case R_390_GOTPLT20:
case R_390_GOTPLT32:
case R_390_GOTPLT64:
case R_390_GOTPLTENT:
}
break;
- case R_390_8:
- case R_390_12:
- case R_390_16:
- case R_390_32:
- case R_390_64:
- case R_390_PC16:
- case R_390_PC16DBL:
- case R_390_PC32:
- case R_390_PC32DBL:
- case R_390_PC64:
- if (h != NULL)
- {
- struct elf_s390_link_hash_entry *eh;
- struct elf_s390_dyn_relocs **pp;
- struct elf_s390_dyn_relocs *p;
-
- if (!info->shared && h->plt.refcount > 0)
- h->plt.refcount -= 1;
-
- eh = (struct elf_s390_link_hash_entry *) h;
-
- for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
- if (p->sec == sec)
- {
- if (ELF64_R_TYPE (rel->r_info) == R_390_PC16
- || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
- || ELF64_R_TYPE (rel->r_info) == R_390_PC32
- || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL
- || ELF64_R_TYPE (rel->r_info) == R_390_PC64)
- p->pc_count -= 1;
- p->count -= 1;
- if (p->count == 0)
- *pp = p->next;
- break;
- }
- }
- break;
-
default:
break;
}
struct elf_link_hash_entry *h;
{
struct elf_s390_link_hash_table *htab;
- struct elf_s390_link_hash_entry * eh;
- struct elf_s390_dyn_relocs *p;
asection *s;
unsigned int power_of_two;
|| h->weakdef->root.type == bfd_link_hash_defweak);
h->root.u.def.section = h->weakdef->root.u.def.section;
h->root.u.def.value = h->weakdef->root.u.def.value;
+ if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
+ h->elf_link_hash_flags
+ = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF)
+ | (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF));
return TRUE;
}
return TRUE;
}
- eh = (struct elf_s390_link_hash_entry *) h;
- for (p = eh->dyn_relocs; p != NULL; p = p->next)
+ if (ELIMINATE_COPY_RELOCS)
{
- s = p->sec->output_section;
- if (s != NULL && (s->flags & SEC_READONLY) != 0)
- break;
- }
+ struct elf_s390_link_hash_entry * eh;
+ struct elf_s390_dyn_relocs *p;
- /* If we didn't find any dynamic relocs in read-only sections, then
- we'll be keeping the dynamic relocs and avoiding the copy reloc. */
- if (p == NULL)
- {
- h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
- return TRUE;
+ eh = (struct elf_s390_link_hash_entry *) h;
+ for (p = eh->dyn_relocs; p != NULL; p = p->next)
+ {
+ s = p->sec->output_section;
+ if (s != NULL && (s->flags & SEC_READONLY) != 0)
+ break;
+ }
+
+ /* If we didn't find any dynamic relocs in read-only sections, then
+ we'll be keeping the dynamic relocs and avoiding the copy reloc. */
+ if (p == NULL)
+ {
+ h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
+ return TRUE;
+ }
}
/* We must allocate the symbol in our .dynbss section, which will
will be called from elflink.h. If elflink.h doesn't call our
finish_dynamic_symbol routine, we'll need to do something about
initializing any .plt and .got entries in elf_s390_relocate_section. */
-#define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
+#define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \
((DYN) \
- && ((INFO)->shared \
+ && ((SHARED) \
|| ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
&& ((H)->dynindx != -1 \
|| ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
htab = elf_s390_hash_table (info);
if (htab->elf.dynamic_sections_created
- && h->plt.refcount > 0)
+ && h->plt.refcount > 0
+ && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ || h->root.type != bfd_link_hash_undefweak))
{
/* Make sure this symbol is output as a dynamic symbol.
Undefined weak syms won't yet be marked as dynamic. */
return FALSE;
}
- if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h))
+ if (info->shared
+ || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
{
asection *s = htab->splt;
elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
}
- if (h->got.refcount > 0)
+ /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
+ the binary, we can optimize a bit. IE64 and GOTIE64 get converted
+ to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
+ we can save the dynamic TLS relocation. */
+ if (h->got.refcount > 0
+ && !info->shared
+ && h->dynindx == -1
+ && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
+ {
+ if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
+ /* For the GOTIE access without a literal pool entry the offset has
+ to be stored somewhere. The immediate value in the instruction
+ is not bit enough so the value is stored in the got. */
+ {
+ h->got.offset = htab->sgot->_raw_size;
+ htab->sgot->_raw_size += GOT_ENTRY_SIZE;
+ }
+ else
+ h->got.offset = (bfd_vma) -1;
+ }
+ else if (h->got.refcount > 0)
{
asection *s;
bfd_boolean dyn;
+ int tls_type = elf_s390_hash_entry(h)->tls_type;
/* Make sure this symbol is output as a dynamic symbol.
Undefined weak syms won't yet be marked as dynamic. */
s = htab->sgot;
h->got.offset = s->_raw_size;
s->_raw_size += GOT_ENTRY_SIZE;
+ /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */
+ if (tls_type == GOT_TLS_GD)
+ s->_raw_size += GOT_ENTRY_SIZE;
dyn = htab->elf.dynamic_sections_created;
- if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h))
+ /* R_390_TLS_IE64 needs one dynamic relocation,
+ R_390_TLS_GD64 needs one if local symbol and two if global. */
+ if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
+ || tls_type >= GOT_TLS_IE)
+ htab->srelgot->_raw_size += sizeof (Elf64_External_Rela);
+ else if (tls_type == GOT_TLS_GD)
+ htab->srelgot->_raw_size += 2 * sizeof (Elf64_External_Rela);
+ else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ || h->root.type != bfd_link_hash_undefweak)
+ && (info->shared
+ || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
htab->srelgot->_raw_size += sizeof (Elf64_External_Rela);
}
else
pp = &p->next;
}
}
+
+ /* Also discard relocs on undefined weak syms with non-default
+ visibility. */
+ if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
+ && h->root.type == bfd_link_hash_undefweak)
+ eh->dyn_relocs = NULL;
}
- else
+ 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
if (htab->elf.dynamic_sections_created)
{
/* Set the contents of the .interp section to the interpreter. */
- if (! info->shared)
+ if (info->executable)
{
s = bfd_get_section_by_name (dynobj, ".interp");
if (s == NULL)
{
bfd_signed_vma *local_got;
bfd_signed_vma *end_local_got;
+ char *local_tls_type;
bfd_size_type locsymcount;
Elf_Internal_Shdr *symtab_hdr;
asection *srela;
symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
locsymcount = symtab_hdr->sh_info;
end_local_got = local_got + locsymcount;
+ local_tls_type = elf_s390_local_got_tls_type (ibfd);
s = htab->sgot;
srela = htab->srelgot;
- for (; local_got < end_local_got; ++local_got)
+ for (; local_got < end_local_got; ++local_got, ++local_tls_type)
{
if (*local_got > 0)
{
*local_got = s->_raw_size;
s->_raw_size += GOT_ENTRY_SIZE;
+ if (*local_tls_type == GOT_TLS_GD)
+ s->_raw_size += GOT_ENTRY_SIZE;
if (info->shared)
srela->_raw_size += sizeof (Elf64_External_Rela);
}
}
}
+ if (htab->tls_ldm_got.refcount > 0)
+ {
+ /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
+ relocs. */
+ htab->tls_ldm_got.offset = htab->sgot->_raw_size;
+ htab->sgot->_raw_size += 2 * GOT_ENTRY_SIZE;
+ htab->srelgot->_raw_size += sizeof (Elf64_External_Rela);
+ }
+ else
+ htab->tls_ldm_got.offset = -1;
+
/* Allocate global sym .plt and .got entries, and space for global
sym dynamic relocs. */
elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
#define add_dynamic_entry(TAG, VAL) \
bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
- if (! info->shared)
+ if (info->executable)
{
if (!add_dynamic_entry (DT_DEBUG, 0))
return FALSE;
return TRUE;
}
+/* Return the base VMA address which should be subtracted from real addresses
+ when resolving @dtpoff relocation.
+ This is PT_TLS segment p_vaddr. */
+
+static bfd_vma
+dtpoff_base (info)
+ struct bfd_link_info *info;
+{
+ /* If tls_segment is NULL, we should have signalled an error already. */
+ if (elf_hash_table (info)->tls_segment == NULL)
+ return 0;
+ return elf_hash_table (info)->tls_segment->start;
+}
+
+/* Return the relocation value for @tpoff relocation
+ if STT_TLS virtual address is ADDRESS. */
+
+static bfd_vma
+tpoff (info, address)
+ struct bfd_link_info *info;
+ bfd_vma address;
+{
+ struct elf_link_tls_segment *tls_segment
+ = elf_hash_table (info)->tls_segment;
+
+ /* If tls_segment is NULL, we should have signalled an error already. */
+ if (tls_segment == NULL)
+ return 0;
+ return (align_power (tls_segment->size, tls_segment->align)
+ + tls_segment->start - address);
+}
+
+/* Complain if TLS instruction relocation is against an invalid
+ instruction. */
+
+static void
+invalid_tls_insn (input_bfd, input_section, rel)
+ bfd *input_bfd;
+ asection *input_section;
+ Elf_Internal_Rela *rel;
+{
+ reloc_howto_type *howto;
+
+ howto = elf_howto_table + ELF64_R_TYPE (rel->r_info);
+ (*_bfd_error_handler)
+ (_("%s(%s+0x%lx): invalid instruction for TLS relocation %s"),
+ bfd_archive_filename (input_bfd),
+ bfd_get_section_name (input_bfd, input_section),
+ (long) rel->r_offset,
+ howto->name);
+}
+
/* Relocate a 390 ELF section. */
static bfd_boolean
Elf_Internal_Rela *rel;
Elf_Internal_Rela *relend;
- if (info->relocateable)
+ if (info->relocatable)
return TRUE;
htab = elf_s390_hash_table (info);
bfd_vma relocation;
bfd_boolean unresolved_reloc;
bfd_reloc_status_type r;
+ int tls_type;
r_type = ELF64_R_TYPE (rel->r_info);
if (r_type == (int) R_390_GNU_VTINHERIT
}
else
{
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- while (h->root.type == bfd_link_hash_indirect
- || h->root.type == bfd_link_hash_warning)
- h = (struct elf_link_hash_entry *) h->root.u.i.link;
+ bfd_boolean warned ATTRIBUTE_UNUSED;
- if (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- {
- sec = h->root.u.def.section;
- if (sec->output_section == NULL)
- {
- /* Set a flag that will be cleared later if we find a
- relocation value for this symbol. output_section
- is typically NULL for symbols satisfied by a shared
- library. */
- unresolved_reloc = TRUE;
- relocation = 0;
- }
- else
- relocation = (h->root.u.def.value
- + sec->output_section->vma
- + sec->output_offset);
- }
- else if (h->root.type == bfd_link_hash_undefweak)
- relocation = 0;
- else if (info->shared
- && (!info->symbolic || info->allow_shlib_undefined)
- && !info->no_undefined
- && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
- relocation = 0;
- else
- {
- if (! ((*info->callbacks->undefined_symbol)
- (info, h->root.root.string, input_bfd,
- input_section, rel->r_offset,
- (!info->shared || info->no_undefined
- || ELF_ST_VISIBILITY (h->other)))))
- return FALSE;
- relocation = 0;
- }
+ RELOC_FOR_GLOBAL_SYMBOL (h, sym_hashes, r_symndx,
+ symtab_hdr, relocation, sec,
+ unresolved_reloc, info,
+ warned);
}
switch (r_type)
{
case R_390_GOTPLT12:
case R_390_GOTPLT16:
+ case R_390_GOTPLT20:
case R_390_GOTPLT32:
case R_390_GOTPLT64:
case R_390_GOTPLTENT:
Current offset - size first entry / entry size. */
plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
PLT_ENTRY_SIZE;
-
+
/* Offset in GOT is PLT index plus GOT headers(3) times 4,
addr & GOT addr. */
relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
unresolved_reloc = FALSE;
if (r_type == R_390_GOTPLTENT)
- relocation += htab->sgot->output_section->vma;
+ relocation += htab->sgot->output_section->vma;
break;
}
/* Fall through. */
case R_390_GOT12:
case R_390_GOT16:
+ case R_390_GOT20:
case R_390_GOT32:
case R_390_GOT64:
case R_390_GOTENT:
off = h->got.offset;
dyn = htab->elf.dynamic_sections_created;
- if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)
+ if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
|| (info->shared
&& (info->symbolic
|| h->dynindx == -1
|| (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
+ && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
+ || (ELF_ST_VISIBILITY (h->other)
+ && h->root.type == bfd_link_hash_undefweak))
{
/* This is actually a static link, or it is a
-Bsymbolic link and the symbol is defined
relocation = htab->sgot->output_offset + off;
- /*
- * For @GOTENT the relocation is against the offset between
- * the instruction and the symbols entry in the GOT and not
- * between the start of the GOT and the symbols entry. We
- * add the vma of the GOT to get the correct value.
- */
+ /* For @GOTENT the relocation is against the offset between
+ the instruction and the symbols entry in the GOT and not
+ between the start of the GOT and the symbols entry. We
+ add the vma of the GOT to get the correct value. */
if ( r_type == R_390_GOTENT
|| r_type == R_390_GOTPLTENT)
relocation += htab->sgot->output_section->vma;
+ htab->splt->output_offset
+ h->plt.offset);
unresolved_reloc = FALSE;
- break;
+ break;
case R_390_PLTOFF16:
case R_390_PLTOFF32:
case R_390_PLTOFF64:
- /* Relocation is to the entry for this symbol in the
- procedure linkage table relative to the start of the GOT. */
+ /* Relocation is to the entry for this symbol in the
+ procedure linkage table relative to the start of the GOT. */
/* For local symbols or if we didn't make a PLT entry for
this symbol resolve the symbol directly. */
- if ( h == NULL
+ if ( h == NULL
|| h->plt.offset == (bfd_vma) -1
|| htab->splt == NULL)
{
break;
}
- relocation = (htab->splt->output_section->vma
- + htab->splt->output_offset
- + h->plt.offset
+ relocation = (htab->splt->output_section->vma
+ + htab->splt->output_offset
+ + h->plt.offset
- htab->sgot->output_section->vma);
unresolved_reloc = FALSE;
break;
break;
if ((info->shared
+ && (h == NULL
+ || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ || h->root.type != bfd_link_hash_undefweak)
&& ((r_type != R_390_PC16
&& r_type != R_390_PC16DBL
&& r_type != R_390_PC32
&& (! info->symbolic
|| (h->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR) == 0))))
- || (!info->shared
+ || (ELIMINATE_COPY_RELOCS
+ && !info->shared
&& h != NULL
&& h->dynindx != -1
&& (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
/* When generating a shared object, these relocations
are copied into the output file to be resolved at run
time. */
-
skip = FALSE;
relocate = FALSE;
break;
+ /* Relocations for tls literal pool entries. */
+ case R_390_TLS_IE64:
+ if (info->shared)
+ {
+ Elf_Internal_Rela outrel;
+ asection *sreloc;
+ bfd_byte *loc;
+
+ outrel.r_offset = rel->r_offset
+ + input_section->output_section->vma
+ + input_section->output_offset;
+ outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
+ sreloc = elf_section_data (input_section)->sreloc;
+ if (sreloc == NULL)
+ abort ();
+ loc = sreloc->contents;
+ loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
+ bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc);
+ }
+ /* Fall through. */
+
+ case R_390_TLS_GD64:
+ case R_390_TLS_GOTIE64:
+ r_type = elf_s390_tls_transition (info, r_type, h == NULL);
+ tls_type = GOT_UNKNOWN;
+ if (h == NULL && local_got_offsets)
+ tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
+ else if (h != NULL)
+ {
+ tls_type = elf_s390_hash_entry(h)->tls_type;
+ if (!info->shared && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
+ r_type = R_390_TLS_LE64;
+ }
+ if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE)
+ r_type = R_390_TLS_IE64;
+
+ if (r_type == R_390_TLS_LE64)
+ {
+ /* This relocation gets optimized away by the local exec
+ access optimization. */
+ BFD_ASSERT (! unresolved_reloc);
+ bfd_put_64 (output_bfd, -tpoff (info, relocation),
+ contents + rel->r_offset);
+ continue;
+ }
+
+ if (htab->sgot == NULL)
+ abort ();
+
+ if (h != NULL)
+ off = h->got.offset;
+ else
+ {
+ if (local_got_offsets == NULL)
+ abort ();
+
+ off = local_got_offsets[r_symndx];
+ }
+
+ emit_tls_relocs:
+
+ if ((off & 1) != 0)
+ off &= ~1;
+ else
+ {
+ Elf_Internal_Rela outrel;
+ bfd_byte *loc;
+ int dr_type, indx;
+
+ if (htab->srelgot == NULL)
+ abort ();
+
+ outrel.r_offset = (htab->sgot->output_section->vma
+ + htab->sgot->output_offset + off);
+
+ indx = h && h->dynindx != -1 ? h->dynindx : 0;
+ if (r_type == R_390_TLS_GD64)
+ dr_type = R_390_TLS_DTPMOD;
+ else
+ dr_type = R_390_TLS_TPOFF;
+ if (dr_type == R_390_TLS_TPOFF && indx == 0)
+ outrel.r_addend = relocation - dtpoff_base (info);
+ else
+ outrel.r_addend = 0;
+ outrel.r_info = ELF64_R_INFO (indx, dr_type);
+ loc = htab->srelgot->contents;
+ loc += htab->srelgot->reloc_count++
+ * sizeof (Elf64_External_Rela);
+ bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
+
+ if (r_type == R_390_TLS_GD64)
+ {
+ if (indx == 0)
+ {
+ BFD_ASSERT (! unresolved_reloc);
+ bfd_put_64 (output_bfd,
+ relocation - dtpoff_base (info),
+ htab->sgot->contents + off + GOT_ENTRY_SIZE);
+ }
+ else
+ {
+ outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF);
+ outrel.r_offset += GOT_ENTRY_SIZE;
+ outrel.r_addend = 0;
+ htab->srelgot->reloc_count++;
+ loc += sizeof (Elf64_External_Rela);
+ bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
+ }
+ }
+
+ if (h != NULL)
+ h->got.offset |= 1;
+ else
+ local_got_offsets[r_symndx] |= 1;
+ }
+
+ if (off >= (bfd_vma) -2)
+ abort ();
+ if (r_type == ELF64_R_TYPE (rel->r_info))
+ {
+ relocation = htab->sgot->output_offset + off;
+ if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT)
+ relocation += htab->sgot->output_section->vma;
+ unresolved_reloc = FALSE;
+ }
+ else
+ {
+ bfd_put_64 (output_bfd, htab->sgot->output_offset + off,
+ contents + rel->r_offset);
+ continue;
+ }
+ break;
+
+ case R_390_TLS_GOTIE12:
+ case R_390_TLS_GOTIE20:
+ case R_390_TLS_IEENT:
+ if (h == NULL)
+ {
+ if (local_got_offsets == NULL)
+ abort();
+ off = local_got_offsets[r_symndx];
+ if (info->shared)
+ goto emit_tls_relocs;
+ }
+ else
+ {
+ off = h->got.offset;
+ tls_type = elf_s390_hash_entry(h)->tls_type;
+ if (info->shared || h->dynindx != -1 || tls_type < GOT_TLS_IE)
+ goto emit_tls_relocs;
+ }
+
+ if (htab->sgot == NULL)
+ abort ();
+
+ BFD_ASSERT (! unresolved_reloc);
+ bfd_put_64 (output_bfd, -tpoff (info, relocation),
+ htab->sgot->contents + off);
+ relocation = htab->sgot->output_offset + off;
+ if (r_type == R_390_TLS_IEENT)
+ relocation += htab->sgot->output_section->vma;
+ unresolved_reloc = FALSE;
+ break;
+
+ case R_390_TLS_LDM64:
+ if (! info->shared)
+ /* The literal pool entry this relocation refers to gets ignored
+ by the optimized code of the local exec model. Do nothing
+ and the value will turn out zero. */
+ continue;
+
+ if (htab->sgot == NULL)
+ abort ();
+
+ off = htab->tls_ldm_got.offset;
+ if (off & 1)
+ off &= ~1;
+ else
+ {
+ Elf_Internal_Rela outrel;
+ bfd_byte *loc;
+
+ if (htab->srelgot == NULL)
+ abort ();
+
+ outrel.r_offset = (htab->sgot->output_section->vma
+ + htab->sgot->output_offset + off);
+
+ bfd_put_64 (output_bfd, 0,
+ htab->sgot->contents + off + GOT_ENTRY_SIZE);
+ outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD);
+ outrel.r_addend = 0;
+ loc = htab->srelgot->contents;
+ loc += htab->srelgot->reloc_count++
+ * sizeof (Elf64_External_Rela);
+ bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
+ htab->tls_ldm_got.offset |= 1;
+ }
+ relocation = htab->sgot->output_offset + off;
+ unresolved_reloc = FALSE;
+ break;
+
+ case R_390_TLS_LE64:
+ if (info->shared)
+ {
+ /* Linking a shared library with non-fpic code requires
+ a R_390_TLS_TPOFF relocation. */
+ Elf_Internal_Rela outrel;
+ asection *sreloc;
+ bfd_byte *loc;
+ int indx;
+
+ outrel.r_offset = rel->r_offset
+ + input_section->output_section->vma
+ + input_section->output_offset;
+ if (h != NULL && h->dynindx != -1)
+ indx = h->dynindx;
+ else
+ indx = 0;
+ outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF);
+ if (indx == 0)
+ outrel.r_addend = relocation - dtpoff_base (info);
+ else
+ outrel.r_addend = 0;
+ sreloc = elf_section_data (input_section)->sreloc;
+ if (sreloc == NULL)
+ abort ();
+ loc = sreloc->contents;
+ loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
+ bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
+ }
+ else
+ {
+ BFD_ASSERT (! unresolved_reloc);
+ bfd_put_64 (output_bfd, -tpoff (info, relocation),
+ contents + rel->r_offset);
+ }
+ continue;
+
+ case R_390_TLS_LDO64:
+ if (info->shared || (input_section->flags & SEC_CODE) == 0)
+ relocation -= dtpoff_base (info);
+ else
+ /* When converting LDO to LE, we must negate. */
+ relocation = -tpoff (info, relocation);
+ break;
+
+ /* Relocations for tls instructions. */
+ case R_390_TLS_LOAD:
+ case R_390_TLS_GDCALL:
+ case R_390_TLS_LDCALL:
+ tls_type = GOT_UNKNOWN;
+ if (h == NULL && local_got_offsets)
+ tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
+ else if (h != NULL)
+ tls_type = elf_s390_hash_entry(h)->tls_type;
+
+ if (tls_type == GOT_TLS_GD)
+ continue;
+
+ if (r_type == R_390_TLS_LOAD)
+ {
+ if (!info->shared && (h == NULL || h->dynindx == -1))
+ {
+ /* IE->LE transition. Four valid cases:
+ lg %rx,(0,%ry) -> sllg %rx,%ry,0
+ lg %rx,(%ry,0) -> sllg %rx,%ry,0
+ lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
+ lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */
+ unsigned int insn0, insn1, ry;
+
+ insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
+ insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
+ if (insn1 != 0x0004)
+ invalid_tls_insn (input_bfd, input_section, rel);
+ ry = 0;
+ if ((insn0 & 0xff00f000) == 0xe3000000)
+ /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */
+ ry = (insn0 & 0x000f0000);
+ else if ((insn0 & 0xff0f0000) == 0xe3000000)
+ /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */
+ ry = (insn0 & 0x0000f000) << 4;
+ else if ((insn0 & 0xff00f000) == 0xe300c000)
+ /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */
+ ry = (insn0 & 0x000f0000);
+ else if ((insn0 & 0xff0f0000) == 0xe30c0000)
+ /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */
+ ry = (insn0 & 0x0000f000) << 4;
+ else
+ invalid_tls_insn (input_bfd, input_section, rel);
+ insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry;
+ insn1 = 0x000d;
+ bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
+ bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
+ }
+ }
+ else if (r_type == R_390_TLS_GDCALL)
+ {
+ unsigned int insn0, insn1;
+
+ insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
+ insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
+ if ((insn0 & 0xffff0000) != 0xc0e50000)
+ invalid_tls_insn (input_bfd, input_section, rel);
+ if (!info->shared && (h == NULL || h->dynindx == -1))
+ {
+ /* GD->LE transition.
+ brasl %r14,__tls_get_addr@plt -> brcl 0,. */
+ insn0 = 0xc0040000;
+ insn1 = 0x0000;
+ }
+ else
+ {
+ /* GD->IE transition.
+ brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */
+ insn0 = 0xe322c000;
+ insn1 = 0x0004;
+ }
+ bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
+ bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
+ }
+ else if (r_type == R_390_TLS_LDCALL)
+ {
+ if (!info->shared)
+ {
+ unsigned int insn0, insn1;
+
+ insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
+ insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
+ if ((insn0 & 0xffff0000) != 0xc0e50000)
+ invalid_tls_insn (input_bfd, input_section, rel);
+ /* LD->LE transition.
+ brasl %r14,__tls_get_addr@plt -> brcl 0,. */
+ insn0 = 0xc0040000;
+ insn1 = 0x0000;
+ bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
+ bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
+ }
+ }
+ continue;
+
default:
break;
}
(long) rel->r_offset,
h->root.root.string);
- r = _bfd_final_link_relocate (howto, input_bfd, input_section,
+ if (r_type == R_390_20
+ || r_type == R_390_GOT20
+ || r_type == R_390_GOTPLT20
+ || r_type == R_390_TLS_GOTIE20)
+ {
+ relocation += rel->r_addend;
+ relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
+ r = _bfd_final_link_relocate (howto, input_bfd, input_section,
+ contents, rel->r_offset,
+ relocation, 0);
+ }
+ else
+ r = _bfd_final_link_relocate (howto, input_bfd, input_section,
contents, rel->r_offset,
relocation, rel->r_addend);
}
}
- if (h->got.offset != (bfd_vma) -1)
+ if (h->got.offset != (bfd_vma) -1
+ && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
+ && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
+ && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
{
Elf_Internal_Rela rela;
bfd_byte *loc;
/* This symbol has an entry in the global offset table. Set it
up. */
-
if (htab->sgot == NULL || htab->srelgot == NULL)
abort ();
return TRUE;
}
-static bfd_boolean
-elf_s390_object_p (abfd)
- bfd *abfd;
-{
- return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_64);
-}
-
-/*
- * Why was the hash table entry size definition changed from
- * ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
- * this is the only reason for the s390_elf64_size_info structure.
- */
+/* Why was the hash table entry size definition changed from
+ ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
+ this is the only reason for the s390_elf64_size_info structure. */
const struct elf_size_info s390_elf64_size_info =
{
sizeof (Elf64_External_Sym),
sizeof (Elf64_External_Dyn),
sizeof (Elf_External_Note),
- 8, /* hash-table entry size */
- 1, /* internal relocations per external relocations */
- 64, /* arch_size */
- 8, /* file_align */
+ 8, /* hash-table entry size. */
+ 1, /* internal relocations per external relocations. */
+ 64, /* arch_size. */
+ 3, /* log_file_align. */
ELFCLASS64, EV_CURRENT,
bfd_elf64_write_out_phdrs,
bfd_elf64_write_shdrs_and_ehdr,
#define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
#define elf_backend_reloc_type_class elf_s390_reloc_type_class
-#define elf_backend_object_p elf_s390_object_p
+#define bfd_elf64_mkobject elf_s390_mkobject
+#define elf_backend_object_p elf_s390_object_p
#include "elf64-target.h"
projects / deliverable / binutils-gdb.git / blobdiff