/* Renesas / SuperH SH specific support for 32-bit ELF
- Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
- 2006 Free Software Foundation, Inc.
+ Copyright (C) 1996-2015 Free Software Foundation, Inc.
Contributed by Ian Lance Taylor, Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
-#include "bfd.h"
#include "sysdep.h"
+#include "bfd.h"
#include "bfdlink.h"
#include "libbfd.h"
#include "elf-bfd.h"
#include "elf-vxworks.h"
#include "elf/sh.h"
+#include "dwarf2.h"
#include "libiberty.h"
#include "../opcodes/sh-opc.h"
#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
+/* FDPIC binaries have a default 128K stack. */
+#define DEFAULT_STACK_SIZE 0x20000
+
#define MINUS_ONE ((bfd_vma) 0 - 1)
+
+/* Decide whether a reference to a symbol can be resolved locally or
+ not. If the symbol is protected, we want the local address, but
+ its function descriptor must be assigned by the dynamic linker. */
+#define SYMBOL_FUNCDESC_LOCAL(INFO, H) \
+ (SYMBOL_REFERENCES_LOCAL (INFO, H) \
+ || ! elf_hash_table (INFO)->dynamic_sections_created)
\f
#define SH_PARTIAL32 TRUE
#define SH_SRC_MASK32 0xffffffff
vxworks_object_p (bfd *abfd ATTRIBUTE_UNUSED)
{
#if !defined INCLUDE_SHMEDIA && !defined SH_TARGET_ALREADY_DEFINED
- extern const bfd_target bfd_elf32_shlvxworks_vec;
- extern const bfd_target bfd_elf32_shvxworks_vec;
+ extern const bfd_target sh_elf32_vxworks_le_vec;
+ extern const bfd_target sh_elf32_vxworks_vec;
+
+ return (abfd->xvec == &sh_elf32_vxworks_le_vec
+ || abfd->xvec == &sh_elf32_vxworks_vec);
+#else
+ return FALSE;
+#endif
+}
+
+/* Return true if OUTPUT_BFD is an FDPIC object. */
+
+static bfd_boolean
+fdpic_object_p (bfd *abfd ATTRIBUTE_UNUSED)
+{
+#if !defined INCLUDE_SHMEDIA && !defined SH_TARGET_ALREADY_DEFINED
+ extern const bfd_target sh_elf32_fdpic_le_vec;
+ extern const bfd_target sh_elf32_fdpic_be_vec;
- return (abfd->xvec == &bfd_elf32_shlvxworks_vec
- || abfd->xvec == &bfd_elf32_shvxworks_vec);
+ return (abfd->xvec == &sh_elf32_fdpic_le_vec
+ || abfd->xvec == &sh_elf32_fdpic_be_vec);
#else
return FALSE;
#endif
&& bfd_is_und_section (symbol_in->section))
return bfd_reloc_undefined;
+ /* PR 17512: file: 9891ca98. */
+ if (addr * bfd_octets_per_byte (abfd) + bfd_get_reloc_size (reloc_entry->howto)
+ > bfd_get_section_limit_octets (abfd, input_section))
+ return bfd_reloc_outofrange;
+
if (bfd_is_com_section (symbol_in->section))
sym_value = 0;
else
{ BFD_RELOC_32_GOTOFF, R_SH_GOTOFF },
{ BFD_RELOC_SH_GOTPC, R_SH_GOTPC },
{ BFD_RELOC_SH_GOTPLT32, R_SH_GOTPLT32 },
+ { BFD_RELOC_SH_GOT20, R_SH_GOT20 },
+ { BFD_RELOC_SH_GOTOFF20, R_SH_GOTOFF20 },
+ { BFD_RELOC_SH_GOTFUNCDESC, R_SH_GOTFUNCDESC },
+ { BFD_RELOC_SH_GOTFUNCDESC20, R_SH_GOTFUNCDESC20 },
+ { BFD_RELOC_SH_GOTOFFFUNCDESC, R_SH_GOTOFFFUNCDESC },
+ { BFD_RELOC_SH_GOTOFFFUNCDESC20, R_SH_GOTOFFFUNCDESC20 },
+ { BFD_RELOC_SH_FUNCDESC, R_SH_FUNCDESC },
#ifdef INCLUDE_SHMEDIA
{ BFD_RELOC_SH_GOT_LOW16, R_SH_GOT_LOW16 },
{ BFD_RELOC_SH_GOT_MEDLOW16, R_SH_GOT_MEDLOW16 },
return NULL;
}
+static reloc_howto_type *
+sh_elf_reloc_name_lookup (bfd *abfd, const char *r_name)
+{
+ unsigned int i;
+
+ if (vxworks_object_p (abfd))
+ {
+ for (i = 0;
+ i < (sizeof (sh_vxworks_howto_table)
+ / sizeof (sh_vxworks_howto_table[0]));
+ i++)
+ if (sh_vxworks_howto_table[i].name != NULL
+ && strcasecmp (sh_vxworks_howto_table[i].name, r_name) == 0)
+ return &sh_vxworks_howto_table[i];
+ }
+ else
+ {
+ for (i = 0;
+ i < (sizeof (sh_elf_howto_table)
+ / sizeof (sh_elf_howto_table[0]));
+ i++)
+ if (sh_elf_howto_table[i].name != NULL
+ && strcasecmp (sh_elf_howto_table[i].name, r_name) == 0)
+ return &sh_elf_howto_table[i];
+ }
+
+ return NULL;
+}
+
/* Given an ELF reloc, fill in the howto field of a relent. */
static void
r = ELF32_R_TYPE (dst->r_info);
- BFD_ASSERT (r < (unsigned int) R_SH_max);
- BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC || r > R_SH_LAST_INVALID_RELOC);
- BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC_2 || r > R_SH_LAST_INVALID_RELOC_2);
- BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC_3 || r > R_SH_LAST_INVALID_RELOC_3);
- BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC_4 || r > R_SH_LAST_INVALID_RELOC_4);
- BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC_5 || r > R_SH_LAST_INVALID_RELOC_5);
+ if (r >= R_SH_max
+ || (r >= R_SH_FIRST_INVALID_RELOC && r <= R_SH_LAST_INVALID_RELOC)
+ || (r >= R_SH_FIRST_INVALID_RELOC_2 && r <= R_SH_LAST_INVALID_RELOC_2)
+ || (r >= R_SH_FIRST_INVALID_RELOC_3 && r <= R_SH_LAST_INVALID_RELOC_3)
+ || (r >= R_SH_FIRST_INVALID_RELOC_4 && r <= R_SH_LAST_INVALID_RELOC_4)
+ || (r >= R_SH_FIRST_INVALID_RELOC_5 && r <= R_SH_LAST_INVALID_RELOC_5)
+ || (r >= R_SH_FIRST_INVALID_RELOC_6 && r <= R_SH_LAST_INVALID_RELOC_6))
+ {
+ (*_bfd_error_handler) (_("%A: unrecognised SH reloc number: %d"),
+ abfd, r);
+ bfd_set_error (bfd_error_bad_value);
+ r = R_SH_NONE;
+ }
cache_ptr->howto = get_howto_table (abfd) + r;
}
}
#endif
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ symtab_hdr = &elf_symtab_hdr (abfd);
internal_relocs = (_bfd_elf_link_read_relocs
(abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
elf_section_data (sec)->this_hdr.contents = contents;
symtab_hdr->contents = (unsigned char *) isymbuf;
- /* Replace the jsr with a bsr. */
+ /* Replace the jmp/jsr with a bra/bsr. */
/* Change the R_SH_USES reloc into an R_SH_IND12W reloc, and
- replace the jsr with a bsr. */
+ replace the jmp/jsr with a bra/bsr. */
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irelfn->r_info), R_SH_IND12W);
/* We used to test (ELF32_R_SYM (irelfn->r_info) < symtab_hdr->sh_info)
here, but that only checks if the symbol is an external symbol,
/* We can't fully resolve this yet, because the external
symbol value may be changed by future relaxing. We let
the final link phase handle it. */
- bfd_put_16 (abfd, (bfd_vma) 0xb000, contents + irel->r_offset);
+ if (bfd_get_16 (abfd, contents + irel->r_offset) & 0x0020)
+ bfd_put_16 (abfd, (bfd_vma) 0xa000, contents + irel->r_offset);
+ else
+ bfd_put_16 (abfd, (bfd_vma) 0xb000, contents + irel->r_offset);
irel->r_addend = -4;
unsigned int symcount;
asection *o;
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ symtab_hdr = &elf_symtab_hdr (abfd);
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
bfd_vma got_entry; /* the address of the symbol's .got.plt entry */
bfd_vma plt; /* .plt (or a branch to .plt on VxWorks) */
bfd_vma reloc_offset; /* the offset of the symbol's JMP_SLOT reloc */
+ bfd_boolean got20; /* TRUE if got_entry points to a movi20
+ instruction (instead of a constant pool
+ entry). */
} symbol_fields;
/* The offset of the resolver stub from the start of SYMBOL_ENTRY. */
bfd_vma symbol_resolve_offset;
+
+ /* A different PLT layout which can be used for the first
+ MAX_SHORT_PLT entries. It must share the same plt0. NULL in
+ other cases. */
+ const struct elf_sh_plt_info *short_plt;
};
#ifdef INCLUDE_SHMEDIA
{ 0, MINUS_ONE, MINUS_ONE },
elf_sh_plt_entry_be,
ELF_PLT_ENTRY_SIZE,
- { 0, 32, 48 },
- 33 /* includes ISA encoding */
+ { 0, 32, 48, FALSE },
+ 33, /* includes ISA encoding */
+ NULL
},
{
/* Little-endian non-PIC. */
{ 0, MINUS_ONE, MINUS_ONE },
elf_sh_plt_entry_le,
ELF_PLT_ENTRY_SIZE,
- { 0, 32, 48 },
- 33 /* includes ISA encoding */
+ { 0, 32, 48, FALSE },
+ 33, /* includes ISA encoding */
+ NULL
},
},
{
{ MINUS_ONE, MINUS_ONE, MINUS_ONE },
elf_sh_pic_plt_entry_be,
ELF_PLT_ENTRY_SIZE,
- { 0, MINUS_ONE, 52 },
- 33 /* includes ISA encoding */
+ { 0, MINUS_ONE, 52, FALSE },
+ 33, /* includes ISA encoding */
+ NULL
},
{
/* Little-endian PIC. */
{ MINUS_ONE, MINUS_ONE, MINUS_ONE },
elf_sh_pic_plt_entry_le,
ELF_PLT_ENTRY_SIZE,
- { 0, MINUS_ONE, 52 },
- 33 /* includes ISA encoding */
+ { 0, MINUS_ONE, 52, FALSE },
+ 33, /* includes ISA encoding */
+ NULL
},
}
};
{ MINUS_ONE, 24, 20 },
elf_sh_plt_entry_be,
ELF_PLT_ENTRY_SIZE,
- { 20, 16, 24 },
- 8
+ { 20, 16, 24, FALSE },
+ 8,
+ NULL
},
{
/* Little-endian non-PIC. */
{ MINUS_ONE, 24, 20 },
elf_sh_plt_entry_le,
ELF_PLT_ENTRY_SIZE,
- { 20, 16, 24 },
- 8
+ { 20, 16, 24, FALSE },
+ 8,
+ NULL
},
},
{
{ MINUS_ONE, MINUS_ONE, MINUS_ONE },
elf_sh_pic_plt_entry_be,
ELF_PLT_ENTRY_SIZE,
- { 20, MINUS_ONE, 24 },
- 8
+ { 20, MINUS_ONE, 24, FALSE },
+ 8,
+ NULL
},
{
/* Little-endian PIC. */
{ MINUS_ONE, MINUS_ONE, MINUS_ONE },
elf_sh_pic_plt_entry_le,
ELF_PLT_ENTRY_SIZE,
- { 20, MINUS_ONE, 24 },
- 8
+ { 20, MINUS_ONE, 24, FALSE },
+ 8,
+ NULL
},
}
};
{ MINUS_ONE, MINUS_ONE, 8 },
vxworks_sh_plt_entry_be,
VXWORKS_PLT_ENTRY_SIZE,
- { 8, 14, 20 },
- 12
+ { 8, 14, 20, FALSE },
+ 12,
+ NULL
},
{
/* Little-endian non-PIC. */
{ MINUS_ONE, MINUS_ONE, 8 },
vxworks_sh_plt_entry_le,
VXWORKS_PLT_ENTRY_SIZE,
- { 8, 14, 20 },
- 12
+ { 8, 14, 20, FALSE },
+ 12,
+ NULL
},
},
{
{ MINUS_ONE, MINUS_ONE, MINUS_ONE },
vxworks_sh_pic_plt_entry_be,
VXWORKS_PLT_ENTRY_SIZE,
- { 8, MINUS_ONE, 20 },
- 12
+ { 8, MINUS_ONE, 20, FALSE },
+ 12,
+ NULL
},
{
/* Little-endian PIC. */
{ MINUS_ONE, MINUS_ONE, MINUS_ONE },
vxworks_sh_pic_plt_entry_le,
VXWORKS_PLT_ENTRY_SIZE,
- { 8, MINUS_ONE, 20 },
- 12
+ { 8, MINUS_ONE, 20, FALSE },
+ 12,
+ NULL
},
}
};
+/* FDPIC PLT entries. Two unimplemented optimizations for lazy
+ binding are to omit the lazy binding stub when linking with -z now
+ and to move lazy binding stubs into a separate region for better
+ cache behavior. */
+
+#define FDPIC_PLT_ENTRY_SIZE 28
+#define FDPIC_PLT_LAZY_OFFSET 20
+
+/* FIXME: The lazy binding stub requires a plt0 - which may need to be
+ duplicated if it is out of range, or which can be inlined. So
+ right now it is always inlined, which wastes a word per stub. It
+ might be easier to handle the duplication if we put the lazy
+ stubs separately. */
+
+static const bfd_byte fdpic_sh_plt_entry_be[FDPIC_PLT_ENTRY_SIZE] =
+{
+ 0xd0, 0x02, /* mov.l @(12,pc),r0 */
+ 0x01, 0xce, /* mov.l @(r0,r12),r1 */
+ 0x70, 0x04, /* add #4, r0 */
+ 0x41, 0x2b, /* jmp @r1 */
+ 0x0c, 0xce, /* mov.l @(r0,r12),r12 */
+ 0x00, 0x09, /* nop */
+ 0, 0, 0, 0, /* 0: replaced with offset of this symbol's funcdesc */
+ 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
+ 0x60, 0xc2, /* mov.l @r12,r0 */
+ 0x40, 0x2b, /* jmp @r0 */
+ 0x53, 0xc1, /* mov.l @(4,r12),r3 */
+ 0x00, 0x09, /* nop */
+};
+
+static const bfd_byte fdpic_sh_plt_entry_le[FDPIC_PLT_ENTRY_SIZE] =
+{
+ 0x02, 0xd0, /* mov.l @(12,pc),r0 */
+ 0xce, 0x01, /* mov.l @(r0,r12),r1 */
+ 0x04, 0x70, /* add #4, r0 */
+ 0x2b, 0x41, /* jmp @r1 */
+ 0xce, 0x0c, /* mov.l @(r0,r12),r12 */
+ 0x09, 0x00, /* nop */
+ 0, 0, 0, 0, /* 0: replaced with offset of this symbol's funcdesc */
+ 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
+ 0xc2, 0x60, /* mov.l @r12,r0 */
+ 0x2b, 0x40, /* jmp @r0 */
+ 0xc1, 0x53, /* mov.l @(4,r12),r3 */
+ 0x09, 0x00, /* nop */
+};
+
+static const struct elf_sh_plt_info fdpic_sh_plts[2] = {
+ {
+ /* Big-endian PIC. */
+ NULL,
+ 0,
+ { MINUS_ONE, MINUS_ONE, MINUS_ONE },
+ fdpic_sh_plt_entry_be,
+ FDPIC_PLT_ENTRY_SIZE,
+ { 12, MINUS_ONE, 16, FALSE },
+ FDPIC_PLT_LAZY_OFFSET,
+ NULL
+ },
+ {
+ /* Little-endian PIC. */
+ NULL,
+ 0,
+ { MINUS_ONE, MINUS_ONE, MINUS_ONE },
+ fdpic_sh_plt_entry_le,
+ FDPIC_PLT_ENTRY_SIZE,
+ { 12, MINUS_ONE, 16, FALSE },
+ FDPIC_PLT_LAZY_OFFSET,
+ NULL
+ },
+};
+
+/* On SH2A, we can use the movi20 instruction to generate shorter PLT
+ entries for the first 64K slots. We use the normal FDPIC PLT entry
+ past that point; we could also use movi20s, which might be faster,
+ but would not be any smaller. */
+
+#define FDPIC_SH2A_PLT_ENTRY_SIZE 24
+#define FDPIC_SH2A_PLT_LAZY_OFFSET 16
+
+static const bfd_byte fdpic_sh2a_plt_entry_be[FDPIC_SH2A_PLT_ENTRY_SIZE] =
+{
+ 0, 0, 0, 0, /* movi20 #gotofffuncdesc,r0 */
+ 0x01, 0xce, /* mov.l @(r0,r12),r1 */
+ 0x70, 0x04, /* add #4, r0 */
+ 0x41, 0x2b, /* jmp @r1 */
+ 0x0c, 0xce, /* mov.l @(r0,r12),r12 */
+ 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
+ 0x60, 0xc2, /* mov.l @r12,r0 */
+ 0x40, 0x2b, /* jmp @r0 */
+ 0x53, 0xc1, /* mov.l @(4,r12),r3 */
+ 0x00, 0x09, /* nop */
+};
+
+static const bfd_byte fdpic_sh2a_plt_entry_le[FDPIC_SH2A_PLT_ENTRY_SIZE] =
+{
+ 0, 0, 0, 0, /* movi20 #gotofffuncdesc,r0 */
+ 0xce, 0x01, /* mov.l @(r0,r12),r1 */
+ 0x04, 0x70, /* add #4, r0 */
+ 0x2b, 0x41, /* jmp @r1 */
+ 0xce, 0x0c, /* mov.l @(r0,r12),r12 */
+ 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
+ 0xc2, 0x60, /* mov.l @r12,r0 */
+ 0x2b, 0x40, /* jmp @r0 */
+ 0xc1, 0x53, /* mov.l @(4,r12),r3 */
+ 0x09, 0x00, /* nop */
+};
+
+static const struct elf_sh_plt_info fdpic_sh2a_short_plt_be = {
+ /* Big-endian FDPIC, max index 64K. */
+ NULL,
+ 0,
+ { MINUS_ONE, MINUS_ONE, MINUS_ONE },
+ fdpic_sh2a_plt_entry_be,
+ FDPIC_SH2A_PLT_ENTRY_SIZE,
+ { 0, MINUS_ONE, 12, TRUE },
+ FDPIC_SH2A_PLT_LAZY_OFFSET,
+ NULL
+};
+
+static const struct elf_sh_plt_info fdpic_sh2a_short_plt_le = {
+ /* Little-endian FDPIC, max index 64K. */
+ NULL,
+ 0,
+ { MINUS_ONE, MINUS_ONE, MINUS_ONE },
+ fdpic_sh2a_plt_entry_le,
+ FDPIC_SH2A_PLT_ENTRY_SIZE,
+ { 0, MINUS_ONE, 12, TRUE },
+ FDPIC_SH2A_PLT_LAZY_OFFSET,
+ NULL
+};
+
+static const struct elf_sh_plt_info fdpic_sh2a_plts[2] = {
+ {
+ /* Big-endian PIC. */
+ NULL,
+ 0,
+ { MINUS_ONE, MINUS_ONE, MINUS_ONE },
+ fdpic_sh_plt_entry_be,
+ FDPIC_PLT_ENTRY_SIZE,
+ { 12, MINUS_ONE, 16, FALSE },
+ FDPIC_PLT_LAZY_OFFSET,
+ &fdpic_sh2a_short_plt_be
+ },
+ {
+ /* Little-endian PIC. */
+ NULL,
+ 0,
+ { MINUS_ONE, MINUS_ONE, MINUS_ONE },
+ fdpic_sh_plt_entry_le,
+ FDPIC_PLT_ENTRY_SIZE,
+ { 12, MINUS_ONE, 16, FALSE },
+ FDPIC_PLT_LAZY_OFFSET,
+ &fdpic_sh2a_short_plt_le
+ },
+};
+
/* Return the type of PLT associated with ABFD. PIC_P is true if
the object is position-independent. */
static const struct elf_sh_plt_info *
-get_plt_info (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean pic_p)
+get_plt_info (bfd *abfd, bfd_boolean pic_p)
{
+ if (fdpic_object_p (abfd))
+ {
+ /* If any input file requires SH2A we can use a shorter PLT
+ sequence. */
+ if (sh_get_arch_from_bfd_mach (bfd_get_mach (abfd)) & arch_sh2a_base)
+ return &fdpic_sh2a_plts[!bfd_big_endian (abfd)];
+ else
+ return &fdpic_sh_plts[!bfd_big_endian (abfd)];
+ }
if (vxworks_object_p (abfd))
return &vxworks_sh_plts[pic_p][!bfd_big_endian (abfd)];
return &elf_sh_plts[pic_p][!bfd_big_endian (abfd)];
}
#endif
+/* The number of PLT entries which can use a shorter PLT, if any.
+ Currently always 64K, since only SH-2A FDPIC uses this; a
+ 20-bit movi20 can address that many function descriptors below
+ _GLOBAL_OFFSET_TABLE_. */
+#define MAX_SHORT_PLT 65536
+
/* Return the index of the PLT entry at byte offset OFFSET. */
static bfd_vma
get_plt_index (const struct elf_sh_plt_info *info, bfd_vma offset)
{
- return (offset - info->plt0_entry_size) / info->symbol_entry_size;
+ bfd_vma plt_index = 0;
+
+ offset -= info->plt0_entry_size;
+ if (info->short_plt != NULL)
+ {
+ if (offset > MAX_SHORT_PLT * info->short_plt->symbol_entry_size)
+ {
+ plt_index = MAX_SHORT_PLT;
+ offset -= MAX_SHORT_PLT * info->short_plt->symbol_entry_size;
+ }
+ else
+ info = info->short_plt;
+ }
+ return plt_index + offset / info->symbol_entry_size;
}
/* Do the inverse operation. */
static bfd_vma
-get_plt_offset (const struct elf_sh_plt_info *info, bfd_vma index)
+get_plt_offset (const struct elf_sh_plt_info *info, bfd_vma plt_index)
{
- return info->plt0_entry_size + (index * info->symbol_entry_size);
+ bfd_vma offset = 0;
+
+ if (info->short_plt != NULL)
+ {
+ if (plt_index > MAX_SHORT_PLT)
+ {
+ offset = MAX_SHORT_PLT * info->short_plt->symbol_entry_size;
+ plt_index -= MAX_SHORT_PLT;
+ }
+ else
+ info = info->short_plt;
+ }
+ return (offset + info->plt0_entry_size
+ + (plt_index * info->symbol_entry_size));
}
/* The sh linker needs to keep track of the number of relocs that it
bfd_size_type pc_count;
};
+union gotref
+{
+ bfd_signed_vma refcount;
+ bfd_vma offset;
+};
+
/* sh ELF linker hash entry. */
struct elf_sh_link_hash_entry
bfd_signed_vma gotplt_refcount;
- enum {
- GOT_UNKNOWN = 0, GOT_NORMAL, GOT_TLS_GD, GOT_TLS_IE
- } tls_type;
+ /* A local function descriptor, for FDPIC. The refcount counts
+ R_SH_FUNCDESC, R_SH_GOTOFFFUNCDESC, and R_SH_GOTOFFFUNCDESC20
+ relocations; the PLT and GOT entry are accounted
+ for separately. After adjust_dynamic_symbol, the offset is
+ MINUS_ONE if there is no local descriptor (dynamic linker
+ managed and no PLT entry, or undefined weak non-dynamic).
+ During check_relocs we do not yet know whether the local
+ descriptor will be canonical. */
+ union gotref funcdesc;
+
+ /* How many of the above refcounted relocations were R_SH_FUNCDESC,
+ and thus require fixups or relocations. */
+ bfd_signed_vma abs_funcdesc_refcount;
+
+ enum got_type {
+ GOT_UNKNOWN = 0, GOT_NORMAL, GOT_TLS_GD, GOT_TLS_IE, GOT_FUNCDESC
+ } got_type;
};
#define sh_elf_hash_entry(ent) ((struct elf_sh_link_hash_entry *)(ent))
{
struct elf_obj_tdata root;
- /* tls_type for each local got entry. */
- char *local_got_tls_type;
+ /* got_type for each local got entry. */
+ char *local_got_type;
+
+ /* Function descriptor refcount and offset for each local symbol. */
+ union gotref *local_funcdesc;
};
#define sh_elf_tdata(abfd) \
((struct sh_elf_obj_tdata *) (abfd)->tdata.any)
-#define sh_elf_local_got_tls_type(abfd) \
- (sh_elf_tdata (abfd)->local_got_tls_type)
+#define sh_elf_local_got_type(abfd) \
+ (sh_elf_tdata (abfd)->local_got_type)
+
+#define sh_elf_local_funcdesc(abfd) \
+ (sh_elf_tdata (abfd)->local_funcdesc)
+
+#define is_sh_elf(bfd) \
+ (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
+ && elf_tdata (bfd) != NULL \
+ && elf_object_id (bfd) == SH_ELF_DATA)
/* Override the generic function because we need to store sh_elf_obj_tdata
as the specific tdata. */
static bfd_boolean
sh_elf_mkobject (bfd *abfd)
{
- if (abfd->tdata.any == NULL)
- {
- bfd_size_type amt = sizeof (struct sh_elf_obj_tdata);
- abfd->tdata.any = bfd_zalloc (abfd, amt);
- if (abfd->tdata.any == NULL)
- return FALSE;
- }
- return bfd_elf_mkobject (abfd);
+ return bfd_elf_allocate_object (abfd, sizeof (struct sh_elf_obj_tdata),
+ SH_ELF_DATA);
}
/* sh ELF linker hash table. */
asection *srelplt;
asection *sdynbss;
asection *srelbss;
+ asection *sfuncdesc;
+ asection *srelfuncdesc;
+ asection *srofixup;
/* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
asection *srelplt2;
- /* Small local sym to section mapping cache. */
- struct sym_sec_cache sym_sec;
+ /* Small local sym cache. */
+ struct sym_cache sym_cache;
/* A counter or offset to track a TLS got entry. */
union
/* True if the target system is VxWorks. */
bfd_boolean vxworks_p;
+
+ /* True if the target system uses FDPIC. */
+ bfd_boolean fdpic_p;
};
/* Traverse an sh ELF linker hash table. */
/* Get the sh ELF linker hash table from a link_info structure. */
#define sh_elf_hash_table(p) \
- ((struct elf_sh_link_hash_table *) ((p)->hash))
+ (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
+ == SH_ELF_DATA ? ((struct elf_sh_link_hash_table *) ((p)->hash)) : NULL)
/* Create an entry in an sh ELF linker hash table. */
#ifdef INCLUDE_SHMEDIA
ret->datalabel_got.refcount = ret->root.got.refcount;
#endif
- ret->tls_type = GOT_UNKNOWN;
+ ret->funcdesc.refcount = 0;
+ ret->abs_funcdesc_refcount = 0;
+ ret->got_type = GOT_UNKNOWN;
}
return (struct bfd_hash_entry *) ret;
struct elf_sh_link_hash_table *ret;
bfd_size_type amt = sizeof (struct elf_sh_link_hash_table);
- ret = (struct elf_sh_link_hash_table *) bfd_malloc (amt);
+ ret = (struct elf_sh_link_hash_table *) bfd_zmalloc (amt);
if (ret == (struct elf_sh_link_hash_table *) NULL)
return NULL;
if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
sh_elf_link_hash_newfunc,
- sizeof (struct elf_sh_link_hash_entry)))
+ sizeof (struct elf_sh_link_hash_entry),
+ SH_ELF_DATA))
{
free (ret);
return NULL;
}
- ret->sgot = NULL;
- ret->sgotplt = NULL;
- ret->srelgot = NULL;
- ret->splt = NULL;
- ret->srelplt = NULL;
- ret->sdynbss = NULL;
- ret->srelbss = NULL;
- ret->srelplt2 = NULL;
- ret->sym_sec.abfd = NULL;
- ret->tls_ldm_got.refcount = 0;
- ret->plt_info = NULL;
ret->vxworks_p = vxworks_object_p (abfd);
+ ret->fdpic_p = fdpic_object_p (abfd);
return &ret->root.root;
}
+static bfd_boolean
+sh_elf_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info, asection *p)
+{
+ struct elf_sh_link_hash_table *htab = sh_elf_hash_table (info);
+
+ /* Non-FDPIC binaries do not need dynamic symbols for sections. */
+ if (!htab->fdpic_p)
+ return TRUE;
+
+ /* We need dynamic symbols for every section, since segments can
+ relocate independently. */
+ switch (elf_section_data (p)->this_hdr.sh_type)
+ {
+ case SHT_PROGBITS:
+ case SHT_NOBITS:
+ /* If sh_type is yet undecided, assume it could be
+ SHT_PROGBITS/SHT_NOBITS. */
+ case SHT_NULL:
+ return FALSE;
+
+ /* There shouldn't be section relative relocations
+ against any other section. */
+ default:
+ return TRUE;
+ }
+}
+
/* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
shortcuts to them in our hash table. */
return FALSE;
htab = sh_elf_hash_table (info);
- htab->sgot = bfd_get_section_by_name (dynobj, ".got");
- htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
- if (! htab->sgot || ! htab->sgotplt)
+ if (htab == NULL)
+ return FALSE;
+
+ htab->sgot = bfd_get_linker_section (dynobj, ".got");
+ htab->sgotplt = bfd_get_linker_section (dynobj, ".got.plt");
+ htab->srelgot = bfd_get_linker_section (dynobj, ".rela.got");
+ if (! htab->sgot || ! htab->sgotplt || ! htab->srelgot)
abort ();
- htab->srelgot = bfd_make_section_with_flags (dynobj, ".rela.got",
- (SEC_ALLOC | SEC_LOAD
- | SEC_HAS_CONTENTS
- | SEC_IN_MEMORY
- | SEC_LINKER_CREATED
- | SEC_READONLY));
- if (htab->srelgot == NULL
- || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
+ htab->sfuncdesc = bfd_make_section_anyway_with_flags (dynobj, ".got.funcdesc",
+ (SEC_ALLOC | SEC_LOAD
+ | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED));
+ if (htab->sfuncdesc == NULL
+ || ! bfd_set_section_alignment (dynobj, htab->sfuncdesc, 2))
return FALSE;
+
+ htab->srelfuncdesc = bfd_make_section_anyway_with_flags (dynobj,
+ ".rela.got.funcdesc",
+ (SEC_ALLOC | SEC_LOAD
+ | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED
+ | SEC_READONLY));
+ if (htab->srelfuncdesc == NULL
+ || ! bfd_set_section_alignment (dynobj, htab->srelfuncdesc, 2))
+ return FALSE;
+
+ /* Also create .rofixup. */
+ htab->srofixup = bfd_make_section_anyway_with_flags (dynobj, ".rofixup",
+ (SEC_ALLOC | SEC_LOAD
+ | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED
+ | SEC_READONLY));
+ if (htab->srofixup == NULL
+ || ! bfd_set_section_alignment (dynobj, htab->srofixup, 2))
+ return FALSE;
+
return TRUE;
}
{
struct elf_sh_link_hash_table *htab;
flagword flags, pltflags;
- register asection *s;
+ asection *s;
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
int ptralign = 0;
}
htab = sh_elf_hash_table (info);
+ if (htab == NULL)
+ return FALSE;
+
if (htab->root.dynamic_sections_created)
return TRUE;
if (bed->plt_readonly)
pltflags |= SEC_READONLY;
- s = bfd_make_section_with_flags (abfd, ".plt", pltflags);
+ s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags);
htab->splt = s;
if (s == NULL
|| ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
return FALSE;
}
- s = bfd_make_section_with_flags (abfd,
- bed->default_use_rela_p ? ".rela.plt" : ".rel.plt",
- flags | SEC_READONLY);
+ s = bfd_make_section_anyway_with_flags (abfd,
+ bed->default_use_rela_p
+ ? ".rela.plt" : ".rel.plt",
+ flags | SEC_READONLY);
htab->srelplt = s;
if (s == NULL
|| ! bfd_set_section_alignment (abfd, s, ptralign))
&& !create_got_section (abfd, info))
return FALSE;
- {
- const char *secname;
- char *relname;
- flagword secflags;
- asection *sec;
-
- for (sec = abfd->sections; sec; sec = sec->next)
- {
- secflags = bfd_get_section_flags (abfd, sec);
- if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
- || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
- continue;
- secname = bfd_get_section_name (abfd, sec);
- relname = (char *) bfd_malloc ((bfd_size_type) strlen (secname) + 6);
- strcpy (relname, ".rela");
- strcat (relname, secname);
- if (bfd_get_section_by_name (abfd, secname))
- continue;
- s = bfd_make_section_with_flags (abfd, relname,
- flags | SEC_READONLY);
- if (s == NULL
- || ! bfd_set_section_alignment (abfd, s, ptralign))
- return FALSE;
- }
- }
-
if (bed->want_dynbss)
{
/* The .dynbss section is a place to put symbols which are defined
image and use a R_*_COPY reloc to tell the dynamic linker to
initialize them at run time. The linker script puts the .dynbss
section into the .bss section of the final image. */
- s = bfd_make_section_with_flags (abfd, ".dynbss",
- SEC_ALLOC | SEC_LINKER_CREATED);
+ s = bfd_make_section_anyway_with_flags (abfd, ".dynbss",
+ SEC_ALLOC | SEC_LINKER_CREATED);
htab->sdynbss = s;
if (s == NULL)
return FALSE;
copy relocs. */
if (! info->shared)
{
- s = bfd_make_section_with_flags (abfd,
- (bed->default_use_rela_p
- ? ".rela.bss" : ".rel.bss"),
- flags | SEC_READONLY);
+ s = bfd_make_section_anyway_with_flags (abfd,
+ (bed->default_use_rela_p
+ ? ".rela.bss" : ".rel.bss"),
+ flags | SEC_READONLY);
htab->srelbss = s;
if (s == NULL
|| ! bfd_set_section_alignment (abfd, s, ptralign))
struct elf_sh_link_hash_entry *eh;
struct elf_sh_dyn_relocs *p;
asection *s;
- unsigned int power_of_two;
htab = sh_elf_hash_table (info);
+ if (htab == NULL)
+ return FALSE;
/* Make sure we know what is going on here. */
BFD_ASSERT (htab->root.dynobj != NULL
return TRUE;
}
- if (h->size == 0)
- {
- (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
- h->root.root.string);
- return TRUE;
- }
-
/* We must allocate the symbol in our .dynbss section, which will
become part of the .bss section of the executable. There will be
an entry for this symbol in the .dynsym section. The dynamic
copy the initial value out of the dynamic object and into the
runtime process image. We need to remember the offset into the
.rela.bss section we are going to use. */
- if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
+ if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
{
asection *srel;
h->needs_copy = 1;
}
- /* We need to figure out the alignment required for this symbol. I
- have no idea how ELF linkers handle this. */
- power_of_two = bfd_log2 (h->size);
- if (power_of_two > 3)
- power_of_two = 3;
-
- /* Apply the required alignment. */
- s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
- if (power_of_two > bfd_get_section_alignment (htab->root.dynobj, s))
- {
- if (! bfd_set_section_alignment (htab->root.dynobj, s, power_of_two))
- return FALSE;
- }
-
- /* Define the symbol as being at this point in the section. */
- h->root.u.def.section = s;
- h->root.u.def.value = s->size;
-
- /* Increment the section size to make room for the symbol. */
- s->size += h->size;
-
- return TRUE;
+ return _bfd_elf_adjust_dynamic_copy (info, h, s);
}
/* Allocate space in .plt, .got and associated reloc sections for
if (h->root.type == bfd_link_hash_indirect)
return TRUE;
- if (h->root.type == bfd_link_hash_warning)
- /* When warning symbols are created, they **replace** the "real"
- entry in the hash table, thus we never get to see the real
- symbol in a hash traversal. So look at it now. */
- h = (struct elf_link_hash_entry *) h->root.u.i.link;
-
info = (struct bfd_link_info *) inf;
htab = sh_elf_hash_table (info);
+ if (htab == NULL)
+ return FALSE;
eh = (struct elf_sh_link_hash_entry *) h;
if ((h->got.refcount > 0
|| WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
{
asection *s = htab->splt;
+ const struct elf_sh_plt_info *plt_info;
/* If this is the first .plt entry, make room for the special
first entry. */
not generating a shared library, then set the symbol to this
location in the .plt. This is required to make function
pointers compare as equal between the normal executable and
- the shared library. */
- if (! info->shared
- && !h->def_regular)
+ the shared library. Skip this for FDPIC, since the
+ function's address will be the address of the canonical
+ function descriptor. */
+ if (!htab->fdpic_p && !info->shared && !h->def_regular)
{
h->root.u.def.section = s;
h->root.u.def.value = h->plt.offset;
}
/* Make room for this entry. */
- s->size += htab->plt_info->symbol_entry_size;
+ plt_info = htab->plt_info;
+ if (plt_info->short_plt != NULL
+ && (get_plt_index (plt_info->short_plt, s->size) < MAX_SHORT_PLT))
+ plt_info = plt_info->short_plt;
+ s->size += plt_info->symbol_entry_size;
/* We also need to make an entry in the .got.plt section, which
will be placed in the .got section by the linker script. */
- htab->sgotplt->size += 4;
+ if (!htab->fdpic_p)
+ htab->sgotplt->size += 4;
+ else
+ htab->sgotplt->size += 8;
/* We also need to make an entry in the .rel.plt section. */
htab->srelplt->size += sizeof (Elf32_External_Rela);
{
asection *s;
bfd_boolean dyn;
- int tls_type = sh_elf_hash_entry (h)->tls_type;
+ enum got_type got_type = sh_elf_hash_entry (h)->got_type;
/* Make sure this symbol is output as a dynamic symbol.
Undefined weak syms won't yet be marked as dynamic. */
h->got.offset = s->size;
s->size += 4;
/* R_SH_TLS_GD needs 2 consecutive GOT slots. */
- if (tls_type == GOT_TLS_GD)
+ if (got_type == GOT_TLS_GD)
s->size += 4;
dyn = htab->root.dynamic_sections_created;
+ if (!dyn)
+ {
+ /* No dynamic relocations required. */
+ if (htab->fdpic_p && !info->shared
+ && h->root.type != bfd_link_hash_undefweak
+ && (got_type == GOT_NORMAL || got_type == GOT_FUNCDESC))
+ htab->srofixup->size += 4;
+ }
+ /* No dynamic relocations required when IE->LE conversion happens. */
+ else if (got_type == GOT_TLS_IE && !h->def_dynamic && !info->shared)
+ ;
/* R_SH_TLS_IE_32 needs one dynamic relocation if dynamic,
R_SH_TLS_GD needs one if local symbol and two if global. */
- if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
- || (tls_type == GOT_TLS_IE && dyn))
+ else if ((got_type == GOT_TLS_GD && h->dynindx == -1)
+ || got_type == GOT_TLS_IE)
htab->srelgot->size += sizeof (Elf32_External_Rela);
- else if (tls_type == GOT_TLS_GD)
+ else if (got_type == GOT_TLS_GD)
htab->srelgot->size += 2 * sizeof (Elf32_External_Rela);
+ else if (got_type == GOT_FUNCDESC)
+ {
+ if (!info->shared && SYMBOL_FUNCDESC_LOCAL (info, h))
+ htab->srofixup->size += 4;
+ else
+ htab->srelgot->size += sizeof (Elf32_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->size += sizeof (Elf32_External_Rela);
+ else if (htab->fdpic_p && !info->shared && got_type == GOT_NORMAL
+ && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ || h->root.type != bfd_link_hash_undefweak))
+ htab->srofixup->size += 4;
}
else
h->got.offset = (bfd_vma) -1;
eh->datalabel_got.offset = (bfd_vma) -1;
#endif
+ /* Allocate space for any dynamic relocations to function
+ descriptors, canonical or otherwise. We need to relocate the
+ reference unless it resolves to zero, which only happens for
+ undefined weak symbols (either non-default visibility, or when
+ static linking). Any GOT slot is accounted for elsewhere. */
+ if (eh->abs_funcdesc_refcount > 0
+ && (h->root.type != bfd_link_hash_undefweak
+ || (htab->root.dynamic_sections_created
+ && ! SYMBOL_CALLS_LOCAL (info, h))))
+ {
+ if (!info->shared && SYMBOL_FUNCDESC_LOCAL (info, h))
+ htab->srofixup->size += eh->abs_funcdesc_refcount * 4;
+ else
+ htab->srelgot->size
+ += eh->abs_funcdesc_refcount * sizeof (Elf32_External_Rela);
+ }
+
+ /* We must allocate a function descriptor if there are references to
+ a canonical descriptor (R_SH_GOTFUNCDESC or R_SH_FUNCDESC) and
+ the dynamic linker isn't going to allocate it. None of this
+ applies if we already created one in .got.plt, but if the
+ canonical function descriptor can be in this object, there
+ won't be a PLT entry at all. */
+ if ((eh->funcdesc.refcount > 0
+ || (h->got.offset != MINUS_ONE && eh->got_type == GOT_FUNCDESC))
+ && h->root.type != bfd_link_hash_undefweak
+ && SYMBOL_FUNCDESC_LOCAL (info, h))
+ {
+ /* Make room for this function descriptor. */
+ eh->funcdesc.offset = htab->sfuncdesc->size;
+ htab->sfuncdesc->size += 8;
+
+ /* We will need a relocation or two fixups to initialize the
+ function descriptor, so allocate those too. */
+ if (!info->shared && SYMBOL_CALLS_LOCAL (info, h))
+ htab->srofixup->size += 8;
+ else
+ htab->srelfuncdesc->size += sizeof (Elf32_External_Rela);
+ }
+
if (eh->dyn_relocs == NULL)
return TRUE;
}
}
+ if (htab->vxworks_p)
+ {
+ struct elf_sh_dyn_relocs **pp;
+
+ for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
+ {
+ if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
+ *pp = p->next;
+ else
+ pp = &p->next;
+ }
+ }
+
/* Also discard relocs on undefined weak syms with non-default
visibility. */
if (eh->dyn_relocs != NULL
{
asection *sreloc = elf_section_data (p->sec)->sreloc;
sreloc->size += p->count * sizeof (Elf32_External_Rela);
+
+ /* If we need relocations, we do not need fixups. */
+ if (htab->fdpic_p && !info->shared)
+ htab->srofixup->size -= 4 * (p->count - p->pc_count);
}
return TRUE;
struct elf_sh_link_hash_entry *eh;
struct elf_sh_dyn_relocs *p;
- if (h->root.type == bfd_link_hash_warning)
- h = (struct elf_link_hash_entry *) h->root.u.i.link;
-
eh = (struct elf_sh_link_hash_entry *) h;
for (p = eh->dyn_relocs; p != NULL; p = p->next)
{
sh_elf_always_size_sections (bfd *output_bfd, struct bfd_link_info *info)
{
sh_elf_hash_table (info)->plt_info = get_plt_info (output_bfd, info->shared);
+
+ if (sh_elf_hash_table (info)->fdpic_p && !info->relocatable
+ && !bfd_elf_stack_segment_size (output_bfd, info,
+ "__stacksize", DEFAULT_STACK_SIZE))
+ return FALSE;
return TRUE;
}
bfd *ibfd;
htab = sh_elf_hash_table (info);
+ if (htab == NULL)
+ return FALSE;
+
dynobj = htab->root.dynobj;
BFD_ASSERT (dynobj != NULL);
/* Set the contents of the .interp section to the interpreter. */
if (info->executable)
{
- s = bfd_get_section_by_name (dynobj, ".interp");
+ s = bfd_get_linker_section (dynobj, ".interp");
BFD_ASSERT (s != NULL);
s->size = sizeof ELF_DYNAMIC_INTERPRETER;
s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
/* Set up .got offsets for local syms, and space for local dynamic
relocs. */
- for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
+ for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
{
bfd_signed_vma *local_got;
bfd_signed_vma *end_local_got;
- char *local_tls_type;
+ union gotref *local_funcdesc, *end_local_funcdesc;
+ char *local_got_type;
bfd_size_type locsymcount;
Elf_Internal_Shdr *symtab_hdr;
asection *srel;
- if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
+ if (! is_sh_elf (ibfd))
continue;
for (s = ibfd->sections; s != NULL; s = s->next)
linker script /DISCARD/, so we'll be discarding
the relocs too. */
}
+ else if (htab->vxworks_p
+ && strcmp (p->sec->output_section->name,
+ ".tls_vars") == 0)
+ {
+ /* Relocations in vxworks .tls_vars sections are
+ handled specially by the loader. */
+ }
else if (p->count != 0)
{
srel = elf_section_data (p->sec)->sreloc;
srel->size += p->count * sizeof (Elf32_External_Rela);
if ((p->sec->output_section->flags & SEC_READONLY) != 0)
info->flags |= DF_TEXTREL;
+
+ /* If we need relocations, we do not need fixups. */
+ if (htab->fdpic_p && !info->shared)
+ htab->srofixup->size -= 4 * (p->count - p->pc_count);
}
}
}
- local_got = elf_local_got_refcounts (ibfd);
- if (!local_got)
- continue;
-
- symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
+ symtab_hdr = &elf_symtab_hdr (ibfd);
locsymcount = symtab_hdr->sh_info;
#ifdef INCLUDE_SHMEDIA
/* Count datalabel local GOT. */
locsymcount *= 2;
#endif
- end_local_got = local_got + locsymcount;
- local_tls_type = sh_elf_local_got_tls_type (ibfd);
s = htab->sgot;
srel = htab->srelgot;
- for (; local_got < end_local_got; ++local_got)
+
+ local_got = elf_local_got_refcounts (ibfd);
+ if (local_got)
{
- if (*local_got > 0)
+ end_local_got = local_got + locsymcount;
+ local_got_type = sh_elf_local_got_type (ibfd);
+ local_funcdesc = sh_elf_local_funcdesc (ibfd);
+ for (; local_got < end_local_got; ++local_got)
{
- *local_got = s->size;
- s->size += 4;
- if (*local_tls_type == GOT_TLS_GD)
- s->size += 4;
- if (info->shared)
- srel->size += sizeof (Elf32_External_Rela);
+ if (*local_got > 0)
+ {
+ *local_got = s->size;
+ s->size += 4;
+ if (*local_got_type == GOT_TLS_GD)
+ s->size += 4;
+ if (info->shared)
+ srel->size += sizeof (Elf32_External_Rela);
+ else
+ htab->srofixup->size += 4;
+
+ if (*local_got_type == GOT_FUNCDESC)
+ {
+ if (local_funcdesc == NULL)
+ {
+ bfd_size_type size;
+
+ size = locsymcount * sizeof (union gotref);
+ local_funcdesc = (union gotref *) bfd_zalloc (ibfd,
+ size);
+ if (local_funcdesc == NULL)
+ return FALSE;
+ sh_elf_local_funcdesc (ibfd) = local_funcdesc;
+ local_funcdesc += (local_got
+ - elf_local_got_refcounts (ibfd));
+ }
+ local_funcdesc->refcount++;
+ ++local_funcdesc;
+ }
+ }
+ else
+ *local_got = (bfd_vma) -1;
+ ++local_got_type;
+ }
+ }
+
+ local_funcdesc = sh_elf_local_funcdesc (ibfd);
+ if (local_funcdesc)
+ {
+ end_local_funcdesc = local_funcdesc + locsymcount;
+
+ for (; local_funcdesc < end_local_funcdesc; ++local_funcdesc)
+ {
+ if (local_funcdesc->refcount > 0)
+ {
+ local_funcdesc->offset = htab->sfuncdesc->size;
+ htab->sfuncdesc->size += 8;
+ if (!info->shared)
+ htab->srofixup->size += 8;
+ else
+ htab->srelfuncdesc->size += sizeof (Elf32_External_Rela);
+ }
+ else
+ local_funcdesc->offset = MINUS_ONE;
}
- else
- *local_got = (bfd_vma) -1;
- ++local_tls_type;
}
+
}
if (htab->tls_ldm_got.refcount > 0)
else
htab->tls_ldm_got.offset = -1;
+ /* Only the reserved entries should be present. For FDPIC, they go at
+ the end of .got.plt. */
+ if (htab->fdpic_p)
+ {
+ BFD_ASSERT (htab->sgotplt && htab->sgotplt->size == 12);
+ htab->sgotplt->size = 0;
+ }
+
/* Allocate global sym .plt and .got entries, and space for global
sym dynamic relocs. */
elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
+ /* Move the reserved entries and the _GLOBAL_OFFSET_TABLE_ symbol to the
+ end of the FDPIC .got.plt. */
+ if (htab->fdpic_p)
+ {
+ htab->root.hgot->root.u.def.value = htab->sgotplt->size;
+ htab->sgotplt->size += 12;
+ }
+
+ /* At the very end of the .rofixup section is a pointer to the GOT. */
+ if (htab->fdpic_p && htab->srofixup != NULL)
+ htab->srofixup->size += 4;
+
/* We now have determined the sizes of the various dynamic sections.
Allocate memory for them. */
relocs = FALSE;
if (s == htab->splt
|| s == htab->sgot
|| s == htab->sgotplt
+ || s == htab->sfuncdesc
+ || s == htab->srofixup
|| s == htab->sdynbss)
{
/* Strip this section if we don't need it; see the
|| ! add_dynamic_entry (DT_JMPREL, 0))
return FALSE;
}
+ else if ((elf_elfheader (output_bfd)->e_flags & EF_SH_FDPIC)
+ && htab->sgot->size != 0)
+ {
+ if (! add_dynamic_entry (DT_PLTGOT, 0))
+ return FALSE;
+ }
if (relocs)
{
return FALSE;
}
}
+ if (htab->vxworks_p
+ && !elf_vxworks_add_dynamic_entries (output_bfd, info))
+ return FALSE;
}
#undef add_dynamic_entry
return TRUE;
}
\f
-/* Relocate an SH ELF section. */
+/* Add a dynamic relocation to the SRELOC section. */
-static bfd_boolean
-sh_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
- bfd *input_bfd, asection *input_section,
- bfd_byte *contents, Elf_Internal_Rela *relocs,
- Elf_Internal_Sym *local_syms,
- asection **local_sections)
+inline static bfd_vma
+sh_elf_add_dyn_reloc (bfd *output_bfd, asection *sreloc, bfd_vma offset,
+ int reloc_type, long dynindx, bfd_vma addend)
{
- struct elf_sh_link_hash_table *htab;
- Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes;
- Elf_Internal_Rela *rel, *relend;
- bfd *dynobj;
- bfd_vma *local_got_offsets;
- asection *sgot;
- asection *sgotplt;
- asection *splt;
- asection *sreloc;
- asection *srelgot;
+ Elf_Internal_Rela outrel;
+ bfd_vma reloc_offset;
- htab = sh_elf_hash_table (info);
- symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
- sym_hashes = elf_sym_hashes (input_bfd);
- dynobj = htab->root.dynobj;
- local_got_offsets = elf_local_got_offsets (input_bfd);
+ outrel.r_offset = offset;
+ outrel.r_info = ELF32_R_INFO (dynindx, reloc_type);
+ outrel.r_addend = addend;
- sgot = htab->sgot;
- sgotplt = htab->sgotplt;
- splt = htab->splt;
- sreloc = NULL;
- srelgot = NULL;
+ reloc_offset = sreloc->reloc_count * sizeof (Elf32_External_Rela);
+ BFD_ASSERT (reloc_offset < sreloc->size);
+ bfd_elf32_swap_reloca_out (output_bfd, &outrel,
+ sreloc->contents + reloc_offset);
+ sreloc->reloc_count++;
+
+ return reloc_offset;
+}
+
+/* Add an FDPIC read-only fixup. */
+
+inline static void
+sh_elf_add_rofixup (bfd *output_bfd, asection *srofixup, bfd_vma offset)
+{
+ bfd_vma fixup_offset;
+
+ fixup_offset = srofixup->reloc_count++ * 4;
+ BFD_ASSERT (fixup_offset < srofixup->size);
+ bfd_put_32 (output_bfd, offset, srofixup->contents + fixup_offset);
+}
+
+/* Return the offset of the generated .got section from the
+ _GLOBAL_OFFSET_TABLE_ symbol. */
+
+static bfd_signed_vma
+sh_elf_got_offset (struct elf_sh_link_hash_table *htab)
+{
+ return (htab->sgot->output_offset - htab->sgotplt->output_offset
+ - htab->root.hgot->root.u.def.value);
+}
+
+/* Find the segment number in which OSEC, and output section, is
+ located. */
+
+static unsigned
+sh_elf_osec_to_segment (bfd *output_bfd, asection *osec)
+{
+ Elf_Internal_Phdr *p = NULL;
+
+ if (output_bfd->xvec->flavour == bfd_target_elf_flavour
+ /* PR ld/17110: Do not look for output segments in an input bfd. */
+ && output_bfd->direction != read_direction)
+ p = _bfd_elf_find_segment_containing_section (output_bfd, osec);
+
+ /* FIXME: Nothing ever says what this index is relative to. The kernel
+ supplies data in terms of the number of load segments but this is
+ a phdr index and the first phdr may not be a load segment. */
+ return (p != NULL) ? p - elf_tdata (output_bfd)->phdr : -1;
+}
+
+static bfd_boolean
+sh_elf_osec_readonly_p (bfd *output_bfd, asection *osec)
+{
+ unsigned seg = sh_elf_osec_to_segment (output_bfd, osec);
+
+ return (seg != (unsigned) -1
+ && ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W));
+}
+
+/* Generate the initial contents of a local function descriptor, along
+ with any relocations or fixups required. */
+static bfd_boolean
+sh_elf_initialize_funcdesc (bfd *output_bfd,
+ struct bfd_link_info *info,
+ struct elf_link_hash_entry *h,
+ bfd_vma offset,
+ asection *section,
+ bfd_vma value)
+{
+ struct elf_sh_link_hash_table *htab;
+ int dynindx;
+ bfd_vma addr, seg;
+
+ htab = sh_elf_hash_table (info);
+
+ /* FIXME: The ABI says that the offset to the function goes in the
+ descriptor, along with the segment index. We're RELA, so it could
+ go in the reloc instead... */
+
+ if (h != NULL && SYMBOL_CALLS_LOCAL (info, h))
+ {
+ section = h->root.u.def.section;
+ value = h->root.u.def.value;
+ }
+
+ if (h == NULL || SYMBOL_CALLS_LOCAL (info, h))
+ {
+ dynindx = elf_section_data (section->output_section)->dynindx;
+ addr = value + section->output_offset;
+ seg = sh_elf_osec_to_segment (output_bfd, section->output_section);
+ }
+ else
+ {
+ BFD_ASSERT (h->dynindx != -1);
+ dynindx = h->dynindx;
+ addr = seg = 0;
+ }
+
+ if (!info->shared && SYMBOL_CALLS_LOCAL (info, h))
+ {
+ if (h == NULL || h->root.type != bfd_link_hash_undefweak)
+ {
+ sh_elf_add_rofixup (output_bfd, htab->srofixup,
+ offset
+ + htab->sfuncdesc->output_section->vma
+ + htab->sfuncdesc->output_offset);
+ sh_elf_add_rofixup (output_bfd, htab->srofixup,
+ offset + 4
+ + htab->sfuncdesc->output_section->vma
+ + htab->sfuncdesc->output_offset);
+ }
+
+ /* There are no dynamic relocations so fill in the final
+ address and gp value (barring fixups). */
+ addr += section->output_section->vma;
+ seg = htab->root.hgot->root.u.def.value
+ + htab->root.hgot->root.u.def.section->output_section->vma
+ + htab->root.hgot->root.u.def.section->output_offset;
+ }
+ else
+ sh_elf_add_dyn_reloc (output_bfd, htab->srelfuncdesc,
+ offset
+ + htab->sfuncdesc->output_section->vma
+ + htab->sfuncdesc->output_offset,
+ R_SH_FUNCDESC_VALUE, dynindx, 0);
+
+ bfd_put_32 (output_bfd, addr, htab->sfuncdesc->contents + offset);
+ bfd_put_32 (output_bfd, seg, htab->sfuncdesc->contents + offset + 4);
+
+ return TRUE;
+}
+
+/* Install a 20-bit movi20 field starting at ADDR, which occurs in OUTPUT_BFD.
+ VALUE is the field's value. Return bfd_reloc_ok if successful or an error
+ otherwise. */
+
+static bfd_reloc_status_type
+install_movi20_field (bfd *output_bfd, unsigned long relocation,
+ bfd *input_bfd, asection *input_section,
+ bfd_byte *contents, bfd_vma offset)
+{
+ unsigned long cur_val;
+ bfd_byte *addr;
+ bfd_reloc_status_type r;
+
+ if (offset > bfd_get_section_limit (input_bfd, input_section))
+ return bfd_reloc_outofrange;
+
+ r = bfd_check_overflow (complain_overflow_signed, 20, 0,
+ bfd_arch_bits_per_address (input_bfd), relocation);
+ if (r != bfd_reloc_ok)
+ return r;
+
+ addr = contents + offset;
+ cur_val = bfd_get_16 (output_bfd, addr);
+ bfd_put_16 (output_bfd, cur_val | ((relocation & 0xf0000) >> 12), addr);
+ bfd_put_16 (output_bfd, relocation & 0xffff, addr + 2);
+
+ return bfd_reloc_ok;
+}
+
+/* Relocate an SH ELF section. */
+
+static bfd_boolean
+sh_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
+ bfd *input_bfd, asection *input_section,
+ bfd_byte *contents, Elf_Internal_Rela *relocs,
+ Elf_Internal_Sym *local_syms,
+ asection **local_sections)
+{
+ struct elf_sh_link_hash_table *htab;
+ Elf_Internal_Shdr *symtab_hdr;
+ struct elf_link_hash_entry **sym_hashes;
+ Elf_Internal_Rela *rel, *relend;
+ bfd *dynobj = NULL;
+ bfd_vma *local_got_offsets;
+ asection *sgot = NULL;
+ asection *sgotplt = NULL;
+ asection *splt = NULL;
+ asection *sreloc = NULL;
+ asection *srelgot = NULL;
+ bfd_boolean is_vxworks_tls;
+ unsigned isec_segment, got_segment, plt_segment, check_segment[2];
+ bfd_boolean fdpic_p = FALSE;
+
+ BFD_ASSERT (is_sh_elf (input_bfd));
+
+ htab = sh_elf_hash_table (info);
+ if (htab != NULL)
+ {
+ dynobj = htab->root.dynobj;
+ sgot = htab->sgot;
+ sgotplt = htab->sgotplt;
+ splt = htab->splt;
+ fdpic_p = htab->fdpic_p;
+ }
+ symtab_hdr = &elf_symtab_hdr (input_bfd);
+ sym_hashes = elf_sym_hashes (input_bfd);
+ local_got_offsets = elf_local_got_offsets (input_bfd);
+
+ isec_segment = sh_elf_osec_to_segment (output_bfd,
+ input_section->output_section);
+ if (fdpic_p && sgot)
+ got_segment = sh_elf_osec_to_segment (output_bfd,
+ sgot->output_section);
+ else
+ got_segment = -1;
+ if (fdpic_p && splt)
+ plt_segment = sh_elf_osec_to_segment (output_bfd,
+ splt->output_section);
+ else
+ plt_segment = -1;
+
+ /* We have to handle relocations in vxworks .tls_vars sections
+ specially, because the dynamic loader is 'weird'. */
+ is_vxworks_tls = (htab && htab->vxworks_p && info->shared
+ && !strcmp (input_section->output_section->name,
+ ".tls_vars"));
rel = relocs;
relend = relocs + input_section->reloc_count;
bfd_reloc_status_type r;
int seen_stt_datalabel = 0;
bfd_vma off;
- int tls_type;
+ enum got_type got_type;
+ const char *symname = NULL;
r_symndx = ELF32_R_SYM (rel->r_info);
|| r_type >= R_SH_max
|| (r_type >= (int) R_SH_FIRST_INVALID_RELOC
&& r_type <= (int) R_SH_LAST_INVALID_RELOC)
+ || (r_type >= (int) R_SH_FIRST_INVALID_RELOC_2
+ && r_type <= (int) R_SH_LAST_INVALID_RELOC_2)
|| ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_3
&& r_type <= (int) R_SH_LAST_INVALID_RELOC_3)
|| ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_4
&& r_type <= (int) R_SH_LAST_INVALID_RELOC_4)
|| ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_5
&& r_type <= (int) R_SH_LAST_INVALID_RELOC_5)
- || (r_type >= (int) R_SH_FIRST_INVALID_RELOC_2
- && r_type <= (int) R_SH_LAST_INVALID_RELOC_2))
+ || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_6
+ && r_type <= (int) R_SH_LAST_INVALID_RELOC_6))
{
bfd_set_error (bfd_error_bad_value);
return FALSE;
h = NULL;
sym = NULL;
sec = NULL;
+ check_segment[0] = -1;
+ check_segment[1] = -1;
if (r_symndx < symtab_hdr->sh_info)
{
sym = local_syms + r_symndx;
sec = local_sections[r_symndx];
+
+ symname = bfd_elf_string_from_elf_section
+ (input_bfd, symtab_hdr->sh_link, sym->st_name);
+ if (symname == NULL || *symname == '\0')
+ symname = bfd_section_name (input_bfd, sec);
+
relocation = (sec->output_section->vma
+ sec->output_offset
+ sym->st_value);
(info,
_("Unexpected STO_SH5_ISA32 on local symbol is not handled"),
input_bfd, input_section, rel->r_offset));
- if (info->relocatable)
+
+ if (sec != NULL && discarded_section (sec))
+ /* Handled below. */
+ ;
+ else if (info->relocatable)
{
/* This is a relocatable link. We don't have to change
anything, unless the reloc is against a section symbol,
in which case we have to adjust according to where the
section symbol winds up in the output section. */
- sym = local_syms + r_symndx;
if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
{
if (! howto->partial_inplace)
relocation, we need just to update the addend.
All real relocs are of type partial_inplace; this
code is mostly for completeness. */
- rel->r_addend += sec->output_offset + sym->st_value;
+ rel->r_addend += sec->output_offset;
continue;
}
{
/* FIXME: Ought to make use of the RELOC_FOR_GLOBAL_SYMBOL macro. */
- /* Section symbol are never (?) placed in the hash table, so
- we can just ignore hash relocations when creating a
- relocatable object file. */
- if (info->relocatable)
- continue;
-
+ relocation = 0;
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ symname = h->root.root.string;
while (h->root.type == bfd_link_hash_indirect
|| h->root.type == bfd_link_hash_warning)
{
{
bfd_boolean dyn;
- dyn = htab->root.dynamic_sections_created;
+ dyn = htab ? htab->root.dynamic_sections_created : FALSE;
sec = h->root.u.def.section;
/* In these cases, we don't need the relocation value.
We check specially because in some obscure cases
|| r_type == R_SH_PLT_HI16)
&& h->plt.offset != (bfd_vma) -1)
|| ((r_type == R_SH_GOT32
+ || r_type == R_SH_GOT20
+ || r_type == R_SH_GOTFUNCDESC
+ || r_type == R_SH_GOTFUNCDESC20
+ || r_type == R_SH_GOTOFFFUNCDESC
+ || r_type == R_SH_GOTOFFFUNCDESC20
+ || r_type == R_SH_FUNCDESC
|| r_type == R_SH_GOT_LOW16
|| r_type == R_SH_GOT_MEDLOW16
|| r_type == R_SH_GOT_MEDHI16
&& ((input_section->flags & SEC_DEBUGGING) != 0
&& h->def_dynamic))
|| (sec->output_section == NULL
- && (sh_elf_hash_entry (h)->tls_type == GOT_TLS_IE
- || sh_elf_hash_entry (h)->tls_type == GOT_TLS_GD)))
- relocation = 0;
- else if (sec->output_section == NULL)
+ && (sh_elf_hash_entry (h)->got_type == GOT_TLS_IE
+ || sh_elf_hash_entry (h)->got_type == GOT_TLS_GD)))
+ ;
+ else if (sec->output_section != NULL)
+ relocation = ((h->root.u.def.value
+ + sec->output_section->vma
+ + sec->output_offset)
+ /* A STO_SH5_ISA32 causes a "bitor 1" to the
+ symbol value, unless we've seen
+ STT_DATALABEL on the way to it. */
+ | ((h->other & STO_SH5_ISA32) != 0
+ && ! seen_stt_datalabel));
+ else if (!info->relocatable
+ && (_bfd_elf_section_offset (output_bfd, info,
+ input_section,
+ rel->r_offset)
+ != (bfd_vma) -1))
{
(*_bfd_error_handler)
(_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
h->root.root.string);
return FALSE;
}
- else
- relocation = ((h->root.u.def.value
- + sec->output_section->vma
- + sec->output_offset)
- /* A STO_SH5_ISA32 causes a "bitor 1" to the
- symbol value, unless we've seen
- STT_DATALABEL on the way to it. */
- | ((h->other & STO_SH5_ISA32) != 0
- && ! seen_stt_datalabel));
}
else if (h->root.type == bfd_link_hash_undefweak)
- relocation = 0;
+ ;
else if (info->unresolved_syms_in_objects == RM_IGNORE
&& ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
- relocation = 0;
- else
+ ;
+ else if (!info->relocatable)
{
if (! info->callbacks->undefined_symbol
(info, h->root.root.string, input_bfd,
(info->unresolved_syms_in_objects == RM_GENERATE_ERROR
|| ELF_ST_VISIBILITY (h->other))))
return FALSE;
- relocation = 0;
}
}
+ if (sec != NULL && discarded_section (sec))
+ RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
+ rel, 1, relend, howto, 0, contents);
+
+ if (info->relocatable)
+ continue;
+
+ /* Check for inter-segment relocations in FDPIC files. Most
+ relocations connect the relocation site to the location of
+ the target symbol, but there are some exceptions below. */
+ check_segment[0] = isec_segment;
+ if (sec != NULL)
+ check_segment[1] = sh_elf_osec_to_segment (output_bfd,
+ sec->output_section);
+ else
+ check_segment[1] = -1;
+
switch ((int) r_type)
{
final_link_relocate:
((*_bfd_error_handler)
(_("%B: 0x%lx: fatal: unaligned %s relocation 0x%lx"),
input_section->owner,
- (unsigned long) rel->r_offset, howto->name,
+ (unsigned long) rel->r_offset, howto->name,
(unsigned long) relocation));
bfd_set_error (bfd_error_bad_value);
return FALSE;
((*_bfd_error_handler)
(_("%B: 0x%lx: fatal: unaligned %s relocation 0x%lx"),
input_section->owner,
- (unsigned long) rel->r_offset, howto->name,
+ (unsigned long) rel->r_offset, howto->name,
(unsigned long) relocation));
bfd_set_error (bfd_error_bad_value);
return FALSE;
&& (h == NULL
|| ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|| h->root.type != bfd_link_hash_undefweak)
- && r_symndx != 0
+ && r_symndx != STN_UNDEF
&& (input_section->flags & SEC_ALLOC) != 0
+ && !is_vxworks_tls
&& (r_type == R_SH_DIR32
|| !SYMBOL_CALLS_LOCAL (info, h)))
{
if (sreloc == NULL)
{
- const char *name;
-
- name = (bfd_elf_string_from_elf_section
- (input_bfd,
- elf_elfheader (input_bfd)->e_shstrndx,
- elf_section_data (input_section)->rel_hdr.sh_name));
- if (name == NULL)
+ sreloc = _bfd_elf_get_dynamic_reloc_section
+ (input_bfd, input_section, /*rela?*/ TRUE);
+ if (sreloc == NULL)
return FALSE;
-
- BFD_ASSERT (CONST_STRNEQ (name, ".rela")
- && strcmp (bfd_get_section_name (input_bfd,
- input_section),
- name + 5) == 0);
-
- sreloc = bfd_get_section_by_name (dynobj, name);
- BFD_ASSERT (sreloc != NULL);
}
skip = FALSE;
outrel.r_addend = addend;
}
#endif
+ else if (fdpic_p
+ && (h == NULL
+ || ((info->symbolic || h->dynindx == -1)
+ && h->def_regular)))
+ {
+ int dynindx;
+
+ BFD_ASSERT (sec != NULL);
+ BFD_ASSERT (sec->output_section != NULL);
+ dynindx = elf_section_data (sec->output_section)->dynindx;
+ outrel.r_info = ELF32_R_INFO (dynindx, R_SH_DIR32);
+ outrel.r_addend = relocation;
+ outrel.r_addend
+ += (howto->partial_inplace
+ ? bfd_get_32 (input_bfd, contents + rel->r_offset)
+ : addend);
+ outrel.r_addend -= sec->output_section->vma;
+ }
else
{
/* h->dynindx may be -1 if this symbol was marked to
loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
+ check_segment[0] = check_segment[1] = -1;
+
/* If this reloc is against an external symbol, we do
not want to fiddle with the addend. Otherwise, we
need to include the symbol value so that it becomes
if (! relocate)
continue;
}
+ else if (fdpic_p && !info->shared
+ && r_type == R_SH_DIR32
+ && (input_section->flags & SEC_ALLOC) != 0)
+ {
+ bfd_vma offset;
+
+ BFD_ASSERT (htab);
+
+ if (sh_elf_osec_readonly_p (output_bfd,
+ input_section->output_section))
+ {
+ (*_bfd_error_handler)
+ (_("%B(%A+0x%lx): cannot emit fixup to `%s' in read-only section"),
+ input_bfd,
+ input_section,
+ (long) rel->r_offset,
+ symname);
+ return FALSE;
+ }
+
+ offset = _bfd_elf_section_offset (output_bfd, info,
+ input_section, rel->r_offset);
+ if (offset != (bfd_vma)-1)
+ sh_elf_add_rofixup (output_bfd, htab->srofixup,
+ input_section->output_section->vma
+ + input_section->output_offset
+ + rel->r_offset);
+
+ check_segment[0] = check_segment[1] = -1;
+ }
+ /* We don't want warnings for non-NULL tests on undefined weak
+ symbols. */
+ else if (r_type == R_SH_REL32
+ && h
+ && h->root.type == bfd_link_hash_undefweak)
+ check_segment[0] = check_segment[1] = -1;
goto final_link_relocate;
case R_SH_GOTPLT32:
/* Relocation is to the entry for this symbol in the global
offset table extension for the procedure linkage table. */
+ BFD_ASSERT (htab);
BFD_ASSERT (sgotplt != NULL);
relocation = (sgotplt->output_offset
+ (get_plt_index (htab->plt_info, h->plt.offset)
force_got:
case R_SH_GOT32:
+ case R_SH_GOT20:
#ifdef INCLUDE_SHMEDIA
case R_SH_GOT_LOW16:
case R_SH_GOT_MEDLOW16:
/* Relocation is to the entry for this symbol in the global
offset table. */
+ BFD_ASSERT (htab);
BFD_ASSERT (sgot != NULL);
+ check_segment[0] = check_segment[1] = -1;
if (h != NULL)
{
else
#endif
h->got.offset |= 1;
+
+ /* If we initialize the GOT entry here with a valid
+ symbol address, also add a fixup. */
+ if (fdpic_p && !info->shared
+ && sh_elf_hash_entry (h)->got_type == GOT_NORMAL
+ && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ || h->root.type != bfd_link_hash_undefweak))
+ sh_elf_add_rofixup (output_bfd, htab->srofixup,
+ sgot->output_section->vma
+ + sgot->output_offset
+ + off);
}
}
- relocation = sgot->output_offset + off;
+ relocation = sh_elf_got_offset (htab) + off;
}
else
{
if (srelgot == NULL)
{
- srelgot = bfd_get_section_by_name (dynobj,
- ".rela.got");
+ srelgot = bfd_get_linker_section (dynobj,
+ ".rela.got");
BFD_ASSERT (srelgot != NULL);
}
outrel.r_offset = (sgot->output_section->vma
+ sgot->output_offset
+ off);
- outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
- outrel.r_addend = relocation;
+ if (fdpic_p)
+ {
+ int dynindx
+ = elf_section_data (sec->output_section)->dynindx;
+ outrel.r_info = ELF32_R_INFO (dynindx, R_SH_DIR32);
+ outrel.r_addend = relocation;
+ outrel.r_addend -= sec->output_section->vma;
+ }
+ else
+ {
+ outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
+ outrel.r_addend = relocation;
+ }
loc = srelgot->contents;
loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
}
+ else if (fdpic_p
+ && (sh_elf_local_got_type (input_bfd) [r_symndx]
+ == GOT_NORMAL))
+ sh_elf_add_rofixup (output_bfd, htab->srofixup,
+ sgot->output_section->vma
+ + sgot->output_offset
+ + off);
#ifdef INCLUDE_SHMEDIA
if (rel->r_addend)
local_got_offsets[r_symndx] |= 1;
}
- relocation = sgot->output_offset + off;
+ relocation = sh_elf_got_offset (htab) + off;
}
#ifdef GOT_BIAS
relocation -= GOT_BIAS;
#endif
- goto final_link_relocate;
+ if (r_type == R_SH_GOT20)
+ {
+ r = install_movi20_field (output_bfd, relocation + addend,
+ input_bfd, input_section, contents,
+ rel->r_offset);
+ break;
+ }
+ else
+ goto final_link_relocate;
case R_SH_GOTOFF:
+ case R_SH_GOTOFF20:
#ifdef INCLUDE_SHMEDIA
case R_SH_GOTOFF_LOW16:
case R_SH_GOTOFF_MEDLOW16:
case R_SH_GOTOFF_MEDHI16:
case R_SH_GOTOFF_HI16:
#endif
- /* Relocation is relative to the start of the global offset
- table. */
-
- BFD_ASSERT (sgot != NULL);
-
- /* Note that sgot->output_offset is not involved in this
- calculation. We always want the start of .got. If we
- defined _GLOBAL_OFFSET_TABLE in a different way, as is
- permitted by the ABI, we might have to change this
- calculation. */
- relocation -= sgot->output_section->vma;
+ /* GOTOFF relocations are relative to _GLOBAL_OFFSET_TABLE_, which
+ we place at the start of the .got.plt section. This is the same
+ as the start of the output .got section, unless there are function
+ descriptors in front of it. */
+ BFD_ASSERT (htab);
+ BFD_ASSERT (sgotplt != NULL);
+ check_segment[0] = got_segment;
+ relocation -= sgotplt->output_section->vma + sgotplt->output_offset
+ + htab->root.hgot->root.u.def.value;
#ifdef GOT_BIAS
relocation -= GOT_BIAS;
addend = rel->r_addend;
- goto final_link_relocate;
+ if (r_type == R_SH_GOTOFF20)
+ {
+ r = install_movi20_field (output_bfd, relocation + addend,
+ input_bfd, input_section, contents,
+ rel->r_offset);
+ break;
+ }
+ else
+ goto final_link_relocate;
case R_SH_GOTPC:
#ifdef INCLUDE_SHMEDIA
#endif
/* Use global offset table as symbol value. */
- BFD_ASSERT (sgot != NULL);
- relocation = sgot->output_section->vma;
+ BFD_ASSERT (sgotplt != NULL);
+ relocation = sgotplt->output_section->vma + sgotplt->output_offset;
#ifdef GOT_BIAS
relocation += GOT_BIAS;
if (h == NULL)
goto final_link_relocate;
+ /* We don't want to warn on calls to undefined weak symbols,
+ as calls to them must be protected by non-NULL tests
+ anyway, and unprotected calls would invoke undefined
+ behavior. */
+ if (h->root.type == bfd_link_hash_undefweak)
+ check_segment[0] = check_segment[1] = -1;
+
if (h->forced_local)
goto final_link_relocate;
}
BFD_ASSERT (splt != NULL);
+ check_segment[1] = plt_segment;
relocation = (splt->output_section->vma
+ splt->output_offset
+ h->plt.offset);
goto final_link_relocate;
+ /* Relocation is to the canonical function descriptor for this
+ symbol, possibly via the GOT. Initialize the GOT
+ entry and function descriptor if necessary. */
+ case R_SH_GOTFUNCDESC:
+ case R_SH_GOTFUNCDESC20:
+ case R_SH_FUNCDESC:
+ {
+ int dynindx = -1;
+ asection *reloc_section;
+ bfd_vma reloc_offset;
+ int reloc_type = R_SH_FUNCDESC;
+
+ BFD_ASSERT (htab);
+
+ check_segment[0] = check_segment[1] = -1;
+
+ /* FIXME: See what FRV does for global symbols in the
+ executable, with --export-dynamic. Do they need ld.so
+ to allocate official descriptors? See what this code
+ does. */
+
+ relocation = 0;
+ addend = 0;
+
+ if (r_type == R_SH_FUNCDESC)
+ {
+ reloc_section = input_section;
+ reloc_offset = rel->r_offset;
+ }
+ else
+ {
+ reloc_section = sgot;
+
+ if (h != NULL)
+ reloc_offset = h->got.offset;
+ else
+ {
+ BFD_ASSERT (local_got_offsets != NULL);
+ reloc_offset = local_got_offsets[r_symndx];
+ }
+ BFD_ASSERT (reloc_offset != MINUS_ONE);
+
+ if (reloc_offset & 1)
+ {
+ reloc_offset &= ~1;
+ goto funcdesc_done_got;
+ }
+ }
+
+ if (h && h->root.type == bfd_link_hash_undefweak
+ && (SYMBOL_CALLS_LOCAL (info, h)
+ || !htab->root.dynamic_sections_created))
+ /* Undefined weak symbol which will not be dynamically
+ resolved later; leave it at zero. */
+ goto funcdesc_leave_zero;
+ else if (SYMBOL_CALLS_LOCAL (info, h)
+ && ! SYMBOL_FUNCDESC_LOCAL (info, h))
+ {
+ /* If the symbol needs a non-local function descriptor
+ but binds locally (i.e., its visibility is
+ protected), emit a dynamic relocation decayed to
+ section+offset. This is an optimization; the dynamic
+ linker would resolve our function descriptor request
+ to our copy of the function anyway. */
+ dynindx = elf_section_data (h->root.u.def.section
+ ->output_section)->dynindx;
+ relocation += h->root.u.def.section->output_offset
+ + h->root.u.def.value;
+ }
+ else if (! SYMBOL_FUNCDESC_LOCAL (info, h))
+ {
+ /* If the symbol is dynamic and there will be dynamic
+ symbol resolution because we are or are linked with a
+ shared library, emit a FUNCDESC relocation such that
+ the dynamic linker will allocate the function
+ descriptor. */
+ BFD_ASSERT (h->dynindx != -1);
+ dynindx = h->dynindx;
+ }
+ else
+ {
+ bfd_vma offset;
+
+ /* Otherwise, we know we have a private function
+ descriptor, so reference it directly. */
+ reloc_type = R_SH_DIR32;
+ dynindx = elf_section_data (htab->sfuncdesc
+ ->output_section)->dynindx;
+
+ if (h)
+ {
+ offset = sh_elf_hash_entry (h)->funcdesc.offset;
+ BFD_ASSERT (offset != MINUS_ONE);
+ if ((offset & 1) == 0)
+ {
+ if (!sh_elf_initialize_funcdesc (output_bfd, info, h,
+ offset, NULL, 0))
+ return FALSE;
+ sh_elf_hash_entry (h)->funcdesc.offset |= 1;
+ }
+ }
+ else
+ {
+ union gotref *local_funcdesc;
+
+ local_funcdesc = sh_elf_local_funcdesc (input_bfd);
+ offset = local_funcdesc[r_symndx].offset;
+ BFD_ASSERT (offset != MINUS_ONE);
+ if ((offset & 1) == 0)
+ {
+ if (!sh_elf_initialize_funcdesc (output_bfd, info, NULL,
+ offset, sec,
+ sym->st_value))
+ return FALSE;
+ local_funcdesc[r_symndx].offset |= 1;
+ }
+ }
+
+ relocation = htab->sfuncdesc->output_offset + (offset & ~1);
+ }
+
+ if (!info->shared && SYMBOL_FUNCDESC_LOCAL (info, h))
+ {
+ bfd_vma offset;
+
+ if (sh_elf_osec_readonly_p (output_bfd,
+ reloc_section->output_section))
+ {
+ (*_bfd_error_handler)
+ (_("%B(%A+0x%lx): cannot emit fixup to `%s' in read-only section"),
+ input_bfd,
+ input_section,
+ (long) rel->r_offset,
+ symname);
+ return FALSE;
+ }
+
+ offset = _bfd_elf_section_offset (output_bfd, info,
+ reloc_section, reloc_offset);
+
+ if (offset != (bfd_vma)-1)
+ sh_elf_add_rofixup (output_bfd, htab->srofixup,
+ offset
+ + reloc_section->output_section->vma
+ + reloc_section->output_offset);
+ }
+ else if ((reloc_section->output_section->flags
+ & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
+ {
+ bfd_vma offset;
+
+ if (sh_elf_osec_readonly_p (output_bfd,
+ reloc_section->output_section))
+ {
+ info->callbacks->warning
+ (info,
+ _("cannot emit dynamic relocations in read-only section"),
+ symname, input_bfd, reloc_section, reloc_offset);
+ return FALSE;
+ }
+
+ if (srelgot == NULL)
+ {
+ srelgot = bfd_get_linker_section (dynobj, ".rela.got");
+ BFD_ASSERT (srelgot != NULL);
+ }
+
+ offset = _bfd_elf_section_offset (output_bfd, info,
+ reloc_section, reloc_offset);
+
+ if (offset != (bfd_vma)-1)
+ sh_elf_add_dyn_reloc (output_bfd, srelgot,
+ offset
+ + reloc_section->output_section->vma
+ + reloc_section->output_offset,
+ reloc_type, dynindx, relocation);
+
+ if (r_type == R_SH_FUNCDESC)
+ {
+ r = bfd_reloc_ok;
+ break;
+ }
+ else
+ {
+ relocation = 0;
+ goto funcdesc_leave_zero;
+ }
+ }
+
+ if (SYMBOL_FUNCDESC_LOCAL (info, h))
+ relocation += htab->sfuncdesc->output_section->vma;
+ funcdesc_leave_zero:
+ if (r_type != R_SH_FUNCDESC)
+ {
+ bfd_put_32 (output_bfd, relocation,
+ reloc_section->contents + reloc_offset);
+ if (h != NULL)
+ h->got.offset |= 1;
+ else
+ local_got_offsets[r_symndx] |= 1;
+
+ funcdesc_done_got:
+
+ relocation = sh_elf_got_offset (htab) + reloc_offset;
+#ifdef GOT_BIAS
+ relocation -= GOT_BIAS;
+#endif
+ }
+ if (r_type == R_SH_GOTFUNCDESC20)
+ {
+ r = install_movi20_field (output_bfd, relocation + addend,
+ input_bfd, input_section, contents,
+ rel->r_offset);
+ break;
+ }
+ else
+ goto final_link_relocate;
+ }
+ break;
+
+ case R_SH_GOTOFFFUNCDESC:
+ case R_SH_GOTOFFFUNCDESC20:
+ /* FIXME: See R_SH_FUNCDESC comment about global symbols in the
+ executable and --export-dynamic. If such symbols get
+ ld.so-allocated descriptors we can not use R_SH_GOTOFFFUNCDESC
+ for them. */
+ BFD_ASSERT (htab);
+
+ check_segment[0] = check_segment[1] = -1;
+ relocation = 0;
+ addend = rel->r_addend;
+
+ if (h && (h->root.type == bfd_link_hash_undefweak
+ || !SYMBOL_FUNCDESC_LOCAL (info, h)))
+ {
+ _bfd_error_handler
+ (_("%B(%A+0x%lx): %s relocation against external symbol \"%s\""),
+ input_bfd, input_section, (long) rel->r_offset, howto->name,
+ h->root.root.string);
+ return FALSE;
+ }
+ else
+ {
+ bfd_vma offset;
+
+ /* Otherwise, we know we have a private function
+ descriptor, so reference it directly. */
+ if (h)
+ {
+ offset = sh_elf_hash_entry (h)->funcdesc.offset;
+ BFD_ASSERT (offset != MINUS_ONE);
+ if ((offset & 1) == 0)
+ {
+ if (!sh_elf_initialize_funcdesc (output_bfd, info, h,
+ offset, NULL, 0))
+ return FALSE;
+ sh_elf_hash_entry (h)->funcdesc.offset |= 1;
+ }
+ }
+ else
+ {
+ union gotref *local_funcdesc;
+
+ local_funcdesc = sh_elf_local_funcdesc (input_bfd);
+ offset = local_funcdesc[r_symndx].offset;
+ BFD_ASSERT (offset != MINUS_ONE);
+ if ((offset & 1) == 0)
+ {
+ if (!sh_elf_initialize_funcdesc (output_bfd, info, NULL,
+ offset, sec,
+ sym->st_value))
+ return FALSE;
+ local_funcdesc[r_symndx].offset |= 1;
+ }
+ }
+
+ relocation = htab->sfuncdesc->output_offset + (offset & ~1);
+ }
+
+ relocation -= (htab->root.hgot->root.u.def.value
+ + sgotplt->output_offset);
+#ifdef GOT_BIAS
+ relocation -= GOT_BIAS;
+#endif
+
+ if (r_type == R_SH_GOTOFFFUNCDESC20)
+ {
+ r = install_movi20_field (output_bfd, relocation + addend,
+ input_bfd, input_section, contents,
+ rel->r_offset);
+ break;
+ }
+ else
+ goto final_link_relocate;
+
case R_SH_LOOP_START:
{
static bfd_vma start, end;
case R_SH_TLS_GD_32:
case R_SH_TLS_IE_32:
+ BFD_ASSERT (htab);
+ check_segment[0] = check_segment[1] = -1;
r_type = sh_elf_optimized_tls_reloc (info, r_type, h == NULL);
- tls_type = GOT_UNKNOWN;
+ got_type = GOT_UNKNOWN;
if (h == NULL && local_got_offsets)
- tls_type = sh_elf_local_got_tls_type (input_bfd) [r_symndx];
+ got_type = sh_elf_local_got_type (input_bfd) [r_symndx];
else if (h != NULL)
{
- tls_type = sh_elf_hash_entry (h)->tls_type;
+ got_type = sh_elf_hash_entry (h)->got_type;
if (! info->shared
&& (h->dynindx == -1
|| h->def_regular))
r_type = R_SH_TLS_LE_32;
}
- if (r_type == R_SH_TLS_GD_32 && tls_type == GOT_TLS_IE)
+ if (r_type == R_SH_TLS_GD_32 && got_type == GOT_TLS_IE)
r_type = R_SH_TLS_IE_32;
if (r_type == R_SH_TLS_LE_32)
}
else
{
- int index;
+ int target;
/* IE->LE transition:
mov.l 1f,r0; stc gbr,rN; mov.l @(r0,r12),rM;
}
BFD_ASSERT ((insn & 0xff00) == 0xd000);
- index = insn & 0x00ff;
+ target = insn & 0x00ff;
insn = bfd_get_16 (input_bfd, contents + offset + 2);
BFD_ASSERT ((insn & 0xf0ff) == 0x0012);
insn = bfd_get_16 (input_bfd, contents + offset + 4);
BFD_ASSERT ((insn & 0xf0ff) == 0x00ce);
- insn = 0xd000 | (insn & 0x0f00) | index;
+ insn = 0xd000 | (insn & 0x0f00) | target;
bfd_put_16 (output_bfd, insn, contents + offset + 0);
bfd_put_16 (output_bfd, 0x0009, contents + offset + 4);
}
continue;
}
- sgot = htab->sgot;
- if (sgot == NULL)
+ if (sgot == NULL || sgotplt == NULL)
abort ();
if (h != NULL)
off &= ~1;
bfd_put_32 (output_bfd, tpoff (info, relocation),
sgot->contents + off);
- bfd_put_32 (output_bfd, sgot->output_offset + off,
+ bfd_put_32 (output_bfd, sh_elf_got_offset (htab) + off,
contents + rel->r_offset);
continue;
}
if (srelgot == NULL)
{
- srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
+ srelgot = bfd_get_linker_section (dynobj, ".rela.got");
BFD_ASSERT (srelgot != NULL);
}
abort ();
if (r_type == (int) ELF32_R_TYPE (rel->r_info))
- relocation = sgot->output_offset + off;
+ relocation = sh_elf_got_offset (htab) + off;
else
{
bfd_vma offset;
bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
- bfd_put_32 (output_bfd, sgot->output_offset + off,
+ bfd_put_32 (output_bfd, sh_elf_got_offset (htab) + off,
contents + rel->r_offset);
continue;
goto final_link_relocate;
case R_SH_TLS_LD_32:
+ BFD_ASSERT (htab);
+ check_segment[0] = check_segment[1] = -1;
if (! info->shared)
{
bfd_vma offset;
continue;
}
- sgot = htab->sgot;
- if (sgot == NULL)
+ if (sgot == NULL || sgotplt == NULL)
abort ();
off = htab->tls_ldm_got.offset;
htab->tls_ldm_got.offset |= 1;
}
- relocation = sgot->output_offset + off;
+ relocation = sh_elf_got_offset (htab) + off;
addend = rel->r_addend;
goto final_link_relocate;
case R_SH_TLS_LDO_32:
+ check_segment[0] = check_segment[1] = -1;
if (! info->shared)
relocation = tpoff (info, relocation);
else
Elf_Internal_Rela outrel;
bfd_byte *loc;
- if (! info->shared)
+ check_segment[0] = check_segment[1] = -1;
+
+ if (! info->shared || info->pie)
{
relocation = tpoff (info, relocation);
addend = rel->r_addend;
if (sreloc == NULL)
{
- const char *name;
-
- name = (bfd_elf_string_from_elf_section
- (input_bfd,
- elf_elfheader (input_bfd)->e_shstrndx,
- elf_section_data (input_section)->rel_hdr.sh_name));
- if (name == NULL)
+ sreloc = _bfd_elf_get_dynamic_reloc_section
+ (input_bfd, input_section, /*rela?*/ TRUE);
+ if (sreloc == NULL)
return FALSE;
-
- BFD_ASSERT (CONST_STRNEQ (name, ".rela")
- && strcmp (bfd_get_section_name (input_bfd,
- input_section),
- name + 5) == 0);
-
- sreloc = bfd_get_section_by_name (dynobj, name);
- BFD_ASSERT (sreloc != NULL);
}
if (h == NULL || h->dynindx == -1)
}
relocation_done:
+ if (fdpic_p && check_segment[0] != (unsigned) -1
+ && check_segment[0] != check_segment[1])
+ {
+ /* We don't want duplicate errors for undefined symbols. */
+ if (!h || h->root.type != bfd_link_hash_undefined)
+ {
+ if (info->shared)
+ {
+ info->callbacks->einfo
+ (_("%X%C: relocation to \"%s\" references a different segment\n"),
+ input_bfd, input_section, rel->r_offset, symname);
+ return FALSE;
+ }
+ else
+ info->callbacks->einfo
+ (_("%C: warning: relocation to \"%s\" references a different segment\n"),
+ input_bfd, input_section, rel->r_offset, symname);
+ }
+
+ elf_elfheader (output_bfd)->e_flags &= ~EF_SH_PIC;
+ }
+
if (r != bfd_reloc_ok)
{
switch (r)
relocatable,
symbols);
- symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
+ symtab_hdr = &elf_symtab_hdr (input_bfd);
memcpy (data, elf_section_data (input_section)->this_hdr.contents,
(size_t) input_section->size);
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
bfd_signed_vma *local_got_refcounts;
+ union gotref *local_funcdesc;
const Elf_Internal_Rela *rel, *relend;
+ if (info->relocatable)
+ return TRUE;
+
elf_section_data (sec)->local_dynrel = NULL;
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ symtab_hdr = &elf_symtab_hdr (abfd);
sym_hashes = elf_sym_hashes (abfd);
local_got_refcounts = elf_local_got_refcounts (abfd);
+ local_funcdesc = sh_elf_local_funcdesc (abfd);
relend = relocs + sec->reloc_count;
for (rel = relocs; rel < relend; rel++)
break;
case R_SH_GOT32:
+ case R_SH_GOT20:
case R_SH_GOTOFF:
+ case R_SH_GOTOFF20:
case R_SH_GOTPC:
#ifdef INCLUDE_SHMEDIA
case R_SH_GOT_LOW16:
#endif
case R_SH_TLS_GD_32:
case R_SH_TLS_IE_32:
+ case R_SH_GOTFUNCDESC:
+ case R_SH_GOTFUNCDESC20:
if (h != NULL)
{
#ifdef INCLUDE_SHMEDIA
}
break;
+ case R_SH_FUNCDESC:
+ if (h != NULL)
+ sh_elf_hash_entry (h)->abs_funcdesc_refcount -= 1;
+ else if (sh_elf_hash_table (info)->fdpic_p && !info->shared)
+ sh_elf_hash_table (info)->srofixup->size -= 4;
+
+ /* Fall through. */
+
+ case R_SH_GOTOFFFUNCDESC:
+ case R_SH_GOTOFFFUNCDESC20:
+ if (h != NULL)
+ sh_elf_hash_entry (h)->funcdesc.refcount -= 1;
+ else
+ local_funcdesc[r_symndx].refcount -= 1;
+ break;
+
case R_SH_DIR32:
+ if (sh_elf_hash_table (info)->fdpic_p && !info->shared
+ && (sec->flags & SEC_ALLOC) != 0)
+ sh_elf_hash_table (info)->srofixup->size -= 4;
+ /* Fall thru */
+
case R_SH_REL32:
if (info->shared)
break;
edir->datalabel_got.refcount += eind->datalabel_got.refcount;
eind->datalabel_got.refcount = 0;
#endif
+ edir->funcdesc.refcount += eind->funcdesc.refcount;
+ eind->funcdesc.refcount = 0;
+ edir->abs_funcdesc_refcount += eind->abs_funcdesc_refcount;
+ eind->abs_funcdesc_refcount = 0;
if (ind->root.type == bfd_link_hash_indirect
&& dir->got.refcount <= 0)
{
- edir->tls_type = eind->tls_type;
- eind->tls_type = GOT_UNKNOWN;
+ edir->got_type = eind->got_type;
+ eind->got_type = GOT_UNKNOWN;
}
if (ind->root.type != bfd_link_hash_indirect
const Elf_Internal_Rela *relocs)
{
Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
+ struct elf_link_hash_entry **sym_hashes;
struct elf_sh_link_hash_table *htab;
const Elf_Internal_Rela *rel;
const Elf_Internal_Rela *rel_end;
- bfd_vma *local_got_offsets;
- asection *sgot;
- asection *srelgot;
asection *sreloc;
unsigned int r_type;
- int tls_type, old_tls_type;
+ enum got_type got_type, old_got_type;
- sgot = NULL;
- srelgot = NULL;
sreloc = NULL;
if (info->relocatable)
return TRUE;
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ BFD_ASSERT (is_sh_elf (abfd));
+
+ symtab_hdr = &elf_symtab_hdr (abfd);
sym_hashes = elf_sym_hashes (abfd);
- sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
- if (!elf_bad_symtab (abfd))
- sym_hashes_end -= symtab_hdr->sh_info;
htab = sh_elf_hash_table (info);
- local_got_offsets = elf_local_got_offsets (abfd);
+ if (htab == NULL)
+ return FALSE;
rel_end = relocs + sec->reloc_count;
for (rel = relocs; rel < rel_end; rel++)
#endif
h = (struct elf_link_hash_entry *) h->root.u.i.link;
}
+
+ /* PR15323, ref flags aren't set for references in the same
+ object. */
+ h->root.non_ir_ref = 1;
}
r_type = sh_elf_optimized_tls_reloc (info, r_type, h == NULL);
|| h->def_regular))
r_type = R_SH_TLS_LE_32;
+ if (htab->fdpic_p)
+ switch (r_type)
+ {
+ case R_SH_GOTOFFFUNCDESC:
+ case R_SH_GOTOFFFUNCDESC20:
+ case R_SH_FUNCDESC:
+ case R_SH_GOTFUNCDESC:
+ case R_SH_GOTFUNCDESC20:
+ if (h != NULL)
+ {
+ if (h->dynindx == -1)
+ switch (ELF_ST_VISIBILITY (h->other))
+ {
+ case STV_INTERNAL:
+ case STV_HIDDEN:
+ break;
+ default:
+ bfd_elf_link_record_dynamic_symbol (info, h);
+ break;
+ }
+ }
+ break;
+ }
+
/* Some relocs require a global offset table. */
if (htab->sgot == NULL)
{
switch (r_type)
{
+ case R_SH_DIR32:
+ /* This may require an rofixup. */
+ if (!htab->fdpic_p)
+ break;
case R_SH_GOTPLT32:
case R_SH_GOT32:
+ case R_SH_GOT20:
case R_SH_GOTOFF:
+ case R_SH_GOTOFF20:
+ case R_SH_FUNCDESC:
+ case R_SH_GOTFUNCDESC:
+ case R_SH_GOTFUNCDESC20:
+ case R_SH_GOTOFFFUNCDESC:
+ case R_SH_GOTOFFFUNCDESC20:
case R_SH_GOTPC:
#ifdef INCLUDE_SHMEDIA
case R_SH_GOTPLT_LOW16:
case R_SH_TLS_GD_32:
case R_SH_TLS_LD_32:
case R_SH_TLS_IE_32:
- if (htab->sgot == NULL)
- {
- if (htab->root.dynobj == NULL)
- htab->root.dynobj = abfd;
- if (!create_got_section (htab->root.dynobj, info))
- return FALSE;
- }
+ if (htab->root.dynobj == NULL)
+ htab->root.dynobj = abfd;
+ if (!create_got_section (htab->root.dynobj, info))
+ return FALSE;
break;
default:
/* This relocation describes which C++ vtable entries are actually
used. Record for later use during GC. */
case R_SH_GNU_VTENTRY:
- if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
+ BFD_ASSERT (h != NULL);
+ if (h != NULL
+ && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
return FALSE;
break;
force_got:
case R_SH_TLS_GD_32:
case R_SH_GOT32:
+ case R_SH_GOT20:
#ifdef INCLUDE_SHMEDIA
case R_SH_GOT_LOW16:
case R_SH_GOT_MEDLOW16:
case R_SH_GOT10BY4:
case R_SH_GOT10BY8:
#endif
+ case R_SH_GOTFUNCDESC:
+ case R_SH_GOTFUNCDESC20:
switch (r_type)
{
default:
- tls_type = GOT_NORMAL;
+ got_type = GOT_NORMAL;
break;
case R_SH_TLS_GD_32:
- tls_type = GOT_TLS_GD;
+ got_type = GOT_TLS_GD;
break;
case R_SH_TLS_IE_32:
- tls_type = GOT_TLS_IE;
+ got_type = GOT_TLS_IE;
+ break;
+ case R_SH_GOTFUNCDESC:
+ case R_SH_GOTFUNCDESC20:
+ got_type = GOT_FUNCDESC;
break;
}
else
#endif
h->got.refcount += 1;
- old_tls_type = sh_elf_hash_entry (h)->tls_type;
+ old_got_type = sh_elf_hash_entry (h)->got_type;
}
else
{
#ifdef INCLUDE_SHMEDIA
/* Take care of both the datalabel and codelabel local
GOT offsets. */
- sh_elf_local_got_tls_type (abfd)
+ sh_elf_local_got_type (abfd)
= (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
#else
- sh_elf_local_got_tls_type (abfd)
+ sh_elf_local_got_type (abfd)
= (char *) (local_got_refcounts + symtab_hdr->sh_info);
#endif
}
else
#endif
local_got_refcounts[r_symndx] += 1;
- old_tls_type = sh_elf_local_got_tls_type (abfd) [r_symndx];
+ old_got_type = sh_elf_local_got_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
- && (old_tls_type != GOT_TLS_GD || tls_type != GOT_TLS_IE))
+ if (old_got_type != got_type && old_got_type != GOT_UNKNOWN
+ && (old_got_type != GOT_TLS_GD || got_type != GOT_TLS_IE))
{
- if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
- tls_type = GOT_TLS_IE;
+ if (old_got_type == GOT_TLS_IE && got_type == GOT_TLS_GD)
+ got_type = GOT_TLS_IE;
else
{
- (*_bfd_error_handler)
+ if ((old_got_type == GOT_FUNCDESC || got_type == GOT_FUNCDESC)
+ && (old_got_type == GOT_NORMAL || got_type == GOT_NORMAL))
+ (*_bfd_error_handler)
+ (_("%B: `%s' accessed both as normal and FDPIC symbol"),
+ abfd, h->root.root.string);
+ else if (old_got_type == GOT_FUNCDESC
+ || got_type == GOT_FUNCDESC)
+ (*_bfd_error_handler)
+ (_("%B: `%s' accessed both as FDPIC and thread local symbol"),
+ abfd, h->root.root.string);
+ else
+ (*_bfd_error_handler)
(_("%B: `%s' accessed both as normal and thread local symbol"),
abfd, h->root.root.string);
return FALSE;
}
}
- if (old_tls_type != tls_type)
+ if (old_got_type != got_type)
{
if (h != NULL)
- sh_elf_hash_entry (h)->tls_type = tls_type;
+ sh_elf_hash_entry (h)->got_type = got_type;
else
- sh_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
+ sh_elf_local_got_type (abfd) [r_symndx] = got_type;
}
break;
sh_elf_hash_table(info)->tls_ldm_got.refcount += 1;
break;
+ case R_SH_FUNCDESC:
+ case R_SH_GOTOFFFUNCDESC:
+ case R_SH_GOTOFFFUNCDESC20:
+ if (rel->r_addend)
+ {
+ (*_bfd_error_handler)
+ (_("%B: Function descriptor relocation with non-zero addend"),
+ abfd);
+ return FALSE;
+ }
+
+ if (h == NULL)
+ {
+ union gotref *local_funcdesc;
+
+ /* We need a function descriptor for a local symbol. */
+ local_funcdesc = sh_elf_local_funcdesc (abfd);
+ if (local_funcdesc == NULL)
+ {
+ bfd_size_type size;
+
+ size = symtab_hdr->sh_info * sizeof (union gotref);
+#ifdef INCLUDE_SHMEDIA
+ /* Count datalabel local GOT. */
+ size *= 2;
+#endif
+ local_funcdesc = (union gotref *) bfd_zalloc (abfd, size);
+ if (local_funcdesc == NULL)
+ return FALSE;
+ sh_elf_local_funcdesc (abfd) = local_funcdesc;
+ }
+ local_funcdesc[r_symndx].refcount += 1;
+
+ if (r_type == R_SH_FUNCDESC)
+ {
+ if (!info->shared)
+ htab->srofixup->size += 4;
+ else
+ htab->srelgot->size += sizeof (Elf32_External_Rela);
+ }
+ }
+ else
+ {
+ sh_elf_hash_entry (h)->funcdesc.refcount++;
+ if (r_type == R_SH_FUNCDESC)
+ sh_elf_hash_entry (h)->abs_funcdesc_refcount++;
+
+ /* If there is a function descriptor reference, then
+ there should not be any non-FDPIC references. */
+ old_got_type = sh_elf_hash_entry (h)->got_type;
+ if (old_got_type != GOT_FUNCDESC && old_got_type != GOT_UNKNOWN)
+ {
+ if (old_got_type == GOT_NORMAL)
+ (*_bfd_error_handler)
+ (_("%B: `%s' accessed both as normal and FDPIC symbol"),
+ abfd, h->root.root.string);
+ else
+ (*_bfd_error_handler)
+ (_("%B: `%s' accessed both as FDPIC and thread local symbol"),
+ abfd, h->root.root.string);
+ }
+ }
+ break;
+
case R_SH_GOTPLT32:
#ifdef INCLUDE_SHMEDIA
case R_SH_GOTPLT_LOW16:
section in dynobj and make room for this reloc. */
if (sreloc == NULL)
{
- const char *name;
-
- name = (bfd_elf_string_from_elf_section
- (abfd,
- elf_elfheader (abfd)->e_shstrndx,
- elf_section_data (sec)->rel_hdr.sh_name));
- if (name == NULL)
- return FALSE;
+ sreloc = _bfd_elf_make_dynamic_reloc_section
+ (sec, htab->root.dynobj, 2, abfd, /*rela?*/ TRUE);
- BFD_ASSERT (CONST_STRNEQ (name, ".rela")
- && strcmp (bfd_get_section_name (abfd, sec),
- name + 5) == 0);
-
- sreloc = bfd_get_section_by_name (htab->root.dynobj, name);
if (sreloc == NULL)
- {
- flagword flags;
-
- flags = (SEC_HAS_CONTENTS | SEC_READONLY
- | SEC_IN_MEMORY | SEC_LINKER_CREATED);
- if ((sec->flags & SEC_ALLOC) != 0)
- flags |= SEC_ALLOC | SEC_LOAD;
- sreloc = bfd_make_section_with_flags (htab->root.dynobj,
- name,
- flags);
- if (sreloc == NULL
- || ! bfd_set_section_alignment (htab->root.dynobj,
- sreloc, 2))
- return FALSE;
- }
- elf_section_data (sec)->sreloc = sreloc;
+ return FALSE;
}
/* If this is a global symbol, we count the number of
head = &((struct elf_sh_link_hash_entry *) h)->dyn_relocs;
else
{
+ /* Track dynamic relocs needed for local syms too. */
asection *s;
void *vpp;
+ Elf_Internal_Sym *isym;
- /* Track dynamic relocs needed for local syms too. */
- s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
- sec, r_symndx);
- if (s == NULL)
+ isym = bfd_sym_from_r_symndx (&htab->sym_cache,
+ abfd, r_symndx);
+ if (isym == NULL)
return FALSE;
+ s = bfd_section_from_elf_index (abfd, isym->st_shndx);
+ if (s == NULL)
+ s = sec;
+
vpp = &elf_section_data (s)->local_dynrel;
head = (struct elf_sh_dyn_relocs **) vpp;
}
p->pc_count += 1;
}
+ /* Allocate the fixup regardless of whether we need a relocation.
+ If we end up generating the relocation, we'll unallocate the
+ fixup. */
+ if (htab->fdpic_p && !info->shared
+ && r_type == R_SH_DIR32
+ && (sec->flags & SEC_ALLOC) != 0)
+ htab->srofixup->size += 4;
break;
case R_SH_TLS_LE_32:
- if (info->shared)
+ if (info->shared && !info->pie)
{
(*_bfd_error_handler)
(_("%B: TLS local exec code cannot be linked into shared objects"),
if (sh_ef_bfd_table[flags] == 0)
return FALSE;
-
+
bfd_default_set_arch_mach (abfd, bfd_arch_sh, sh_ef_bfd_table[flags]);
return TRUE;
sh_elf_get_flags_from_mach (unsigned long mach)
{
int i = ARRAY_SIZE (sh_ef_bfd_table) - 1;
-
+
for (; i>0; i--)
if (sh_ef_bfd_table[i] == mach)
return i;
-
+
/* shouldn't get here */
BFD_FAIL();
}
#endif /* not sh_elf_set_mach_from_flags */
-#ifndef sh_elf_set_private_flags
-/* Function to keep SH specific file flags. */
-
-static bfd_boolean
-sh_elf_set_private_flags (bfd *abfd, flagword flags)
-{
- BFD_ASSERT (! elf_flags_init (abfd)
- || elf_elfheader (abfd)->e_flags == flags);
-
- elf_elfheader (abfd)->e_flags = flags;
- elf_flags_init (abfd) = TRUE;
- return sh_elf_set_mach_from_flags (abfd);
-}
-#endif /* not sh_elf_set_private_flags */
-
#ifndef sh_elf_copy_private_data
/* Copy backend specific data from one object module to another */
static bfd_boolean
sh_elf_copy_private_data (bfd * ibfd, bfd * obfd)
{
- if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
- || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
+ if (! is_sh_elf (ibfd) || ! is_sh_elf (obfd))
return TRUE;
- return sh_elf_set_private_flags (obfd, elf_elfheader (ibfd)->e_flags);
+ if (! _bfd_elf_copy_private_bfd_data (ibfd, obfd))
+ return FALSE;
+
+ return sh_elf_set_mach_from_flags (obfd);
}
#endif /* not sh_elf_copy_private_data */
{
extern bfd_boolean sh_merge_bfd_arch (bfd *, bfd *);
- if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
- || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
+ if (! is_sh_elf (ibfd) || ! is_sh_elf (obfd))
return TRUE;
if (! elf_flags_init (obfd))
{
/* This happens when ld starts out with a 'blank' output file. */
elf_flags_init (obfd) = TRUE;
- elf_elfheader (obfd)->e_flags = EF_SH1;
+ elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
sh_elf_set_mach_from_flags (obfd);
+ if (elf_elfheader (obfd)->e_flags & EF_SH_FDPIC)
+ elf_elfheader (obfd)->e_flags |= EF_SH_PIC;
}
if (! sh_merge_bfd_arch (ibfd, obfd))
return FALSE;
}
- elf_elfheader (obfd)->e_flags =
+ elf_elfheader (obfd)->e_flags &= ~EF_SH_MACH_MASK;
+ elf_elfheader (obfd)->e_flags |=
sh_elf_get_flags_from_mach (bfd_get_mach (obfd));
-
+
+ if (fdpic_object_p (ibfd) != fdpic_object_p (obfd))
+ {
+ _bfd_error_handler ("%B: attempt to mix FDPIC and non-FDPIC objects",
+ ibfd);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+
return TRUE;
}
#endif /* not sh_elf_merge_private_data */
static bfd_boolean
sh_elf_object_p (bfd *abfd)
{
- return sh_elf_set_mach_from_flags (abfd);
+ if (! sh_elf_set_mach_from_flags (abfd))
+ return FALSE;
+
+ return (((elf_elfheader (abfd)->e_flags & EF_SH_FDPIC) != 0)
+ == fdpic_object_p (abfd));
}
/* Finish up dynamic symbol handling. We set the contents of various
struct elf_sh_link_hash_table *htab;
htab = sh_elf_hash_table (info);
+ if (htab == NULL)
+ return FALSE;
if (h->plt.offset != (bfd_vma) -1)
{
asection *splt;
- asection *sgot;
- asection *srel;
+ asection *sgotplt;
+ asection *srelplt;
bfd_vma plt_index;
bfd_vma got_offset;
Elf_Internal_Rela rel;
bfd_byte *loc;
+ const struct elf_sh_plt_info *plt_info;
/* This symbol has an entry in the procedure linkage table. Set
it up. */
BFD_ASSERT (h->dynindx != -1);
splt = htab->splt;
- sgot = htab->sgotplt;
- srel = htab->srelplt;
- BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL);
+ sgotplt = htab->sgotplt;
+ srelplt = htab->srelplt;
+ BFD_ASSERT (splt != NULL && sgotplt != NULL && srelplt != NULL);
/* Get the index in the procedure linkage table which
corresponds to this symbol. This is the index of this symbol
first entry in the procedure linkage table is reserved. */
plt_index = get_plt_index (htab->plt_info, h->plt.offset);
+ plt_info = htab->plt_info;
+ if (plt_info->short_plt != NULL && plt_index <= MAX_SHORT_PLT)
+ plt_info = plt_info->short_plt;
+
/* Get the offset into the .got table of the entry that
- corresponds to this function. Each .got entry is 4 bytes.
- The first three are reserved. */
- got_offset = (plt_index + 3) * 4;
+ corresponds to this function. */
+ if (htab->fdpic_p)
+ /* The offset must be relative to the GOT symbol, twelve bytes
+ before the end of .got.plt. Each descriptor is eight
+ bytes. */
+ got_offset = plt_index * 8 + 12 - sgotplt->size;
+ else
+ /* Each .got entry is 4 bytes. The first three are
+ reserved. */
+ got_offset = (plt_index + 3) * 4;
#ifdef GOT_BIAS
if (info->shared)
/* Fill in the entry in the procedure linkage table. */
memcpy (splt->contents + h->plt.offset,
- htab->plt_info->symbol_entry,
- htab->plt_info->symbol_entry_size);
+ plt_info->symbol_entry,
+ plt_info->symbol_entry_size);
- if (info->shared)
- install_plt_field (output_bfd, FALSE, got_offset,
- (splt->contents
- + h->plt.offset
- + htab->plt_info->symbol_fields.got_entry));
+ if (info->shared || htab->fdpic_p)
+ {
+ if (plt_info->symbol_fields.got20)
+ {
+ bfd_reloc_status_type r;
+ r = install_movi20_field (output_bfd, got_offset,
+ splt->owner, splt, splt->contents,
+ h->plt.offset
+ + plt_info->symbol_fields.got_entry);
+ BFD_ASSERT (r == bfd_reloc_ok);
+ }
+ else
+ install_plt_field (output_bfd, FALSE, got_offset,
+ (splt->contents
+ + h->plt.offset
+ + plt_info->symbol_fields.got_entry));
+ }
else
{
+ BFD_ASSERT (!plt_info->symbol_fields.got20);
+
install_plt_field (output_bfd, FALSE,
- (sgot->output_section->vma
- + sgot->output_offset
+ (sgotplt->output_section->vma
+ + sgotplt->output_offset
+ got_offset),
(splt->contents
+ h->plt.offset
- + htab->plt_info->symbol_fields.got_entry));
+ + plt_info->symbol_fields.got_entry));
if (htab->vxworks_p)
{
unsigned int reachable_plts, plts_per_4k;
/* ??? It would be better to create multiple copies of
the common resolver stub. */
reachable_plts = ((4096
- - htab->plt_info->plt0_entry_size
- - (htab->plt_info->symbol_fields.plt + 4))
- / htab->plt_info->symbol_entry_size) + 1;
- plts_per_4k = (4096 / htab->plt_info->symbol_entry_size);
+ - plt_info->plt0_entry_size
+ - (plt_info->symbol_fields.plt + 4))
+ / plt_info->symbol_entry_size) + 1;
+ plts_per_4k = (4096 / plt_info->symbol_entry_size);
if (plt_index < reachable_plts)
distance = -(h->plt.offset
- + htab->plt_info->symbol_fields.plt);
+ + plt_info->symbol_fields.plt);
else
distance = -(((plt_index - reachable_plts) % plts_per_4k + 1)
- * htab->plt_info->symbol_entry_size);
+ * plt_info->symbol_entry_size);
/* Install the 'bra' with this offset. */
bfd_put_16 (output_bfd,
0xa000 | (0x0fff & ((distance - 4) / 2)),
(splt->contents
+ h->plt.offset
- + htab->plt_info->symbol_fields.plt));
+ + plt_info->symbol_fields.plt));
}
else
install_plt_field (output_bfd, TRUE,
splt->output_section->vma + splt->output_offset,
(splt->contents
+ h->plt.offset
- + htab->plt_info->symbol_fields.plt));
+ + plt_info->symbol_fields.plt));
}
+ /* Make got_offset relative to the start of .got.plt. */
#ifdef GOT_BIAS
if (info->shared)
got_offset += GOT_BIAS;
#endif
+ if (htab->fdpic_p)
+ got_offset = plt_index * 8;
- install_plt_field (output_bfd, FALSE,
- plt_index * sizeof (Elf32_External_Rela),
- (splt->contents
- + h->plt.offset
- + htab->plt_info->symbol_fields.reloc_offset));
+ if (plt_info->symbol_fields.reloc_offset != MINUS_ONE)
+ install_plt_field (output_bfd, FALSE,
+ plt_index * sizeof (Elf32_External_Rela),
+ (splt->contents
+ + h->plt.offset
+ + plt_info->symbol_fields.reloc_offset));
/* Fill in the entry in the global offset table. */
bfd_put_32 (output_bfd,
(splt->output_section->vma
+ splt->output_offset
+ h->plt.offset
- + htab->plt_info->symbol_resolve_offset),
- sgot->contents + got_offset);
+ + plt_info->symbol_resolve_offset),
+ sgotplt->contents + got_offset);
+ if (htab->fdpic_p)
+ bfd_put_32 (output_bfd,
+ sh_elf_osec_to_segment (output_bfd,
+ htab->splt->output_section),
+ sgotplt->contents + got_offset + 4);
/* Fill in the entry in the .rela.plt section. */
- rel.r_offset = (sgot->output_section->vma
- + sgot->output_offset
+ rel.r_offset = (sgotplt->output_section->vma
+ + sgotplt->output_offset
+ got_offset);
- rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_JMP_SLOT);
+ if (htab->fdpic_p)
+ rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_FUNCDESC_VALUE);
+ else
+ rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_JMP_SLOT);
rel.r_addend = 0;
#ifdef GOT_BIAS
rel.r_addend = GOT_BIAS;
#endif
- loc = srel->contents + plt_index * sizeof (Elf32_External_Rela);
+ loc = srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
if (htab->vxworks_p && !info->shared)
rel.r_offset = (htab->splt->output_section->vma
+ htab->splt->output_offset
+ h->plt.offset
- + htab->plt_info->symbol_fields.got_entry);
+ + plt_info->symbol_fields.got_entry);
rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_SH_DIR32);
rel.r_addend = got_offset;
bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
/* Create a .rela.plt.unloaded R_SH_DIR32 relocation for
the .got.plt entry, which initially points to .plt. */
- rel.r_offset = (htab->sgotplt->output_section->vma
- + htab->sgotplt->output_offset
+ rel.r_offset = (sgotplt->output_section->vma
+ + sgotplt->output_offset
+ got_offset);
rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_SH_DIR32);
rel.r_addend = 0;
}
if (h->got.offset != (bfd_vma) -1
- && sh_elf_hash_entry (h)->tls_type != GOT_TLS_GD
- && sh_elf_hash_entry (h)->tls_type != GOT_TLS_IE)
+ && sh_elf_hash_entry (h)->got_type != GOT_TLS_GD
+ && sh_elf_hash_entry (h)->got_type != GOT_TLS_IE
+ && sh_elf_hash_entry (h)->got_type != GOT_FUNCDESC)
{
asection *sgot;
- asection *srel;
+ asection *srelgot;
Elf_Internal_Rela rel;
bfd_byte *loc;
up. */
sgot = htab->sgot;
- srel = htab->srelgot;
- BFD_ASSERT (sgot != NULL && srel != NULL);
+ srelgot = htab->srelgot;
+ BFD_ASSERT (sgot != NULL && srelgot != NULL);
rel.r_offset = (sgot->output_section->vma
+ sgot->output_offset
if (info->shared
&& SYMBOL_REFERENCES_LOCAL (info, h))
{
- rel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
- rel.r_addend = (h->root.u.def.value
- + h->root.u.def.section->output_section->vma
- + h->root.u.def.section->output_offset);
+ if (htab->fdpic_p)
+ {
+ asection *sec = h->root.u.def.section;
+ int dynindx
+ = elf_section_data (sec->output_section)->dynindx;
+
+ rel.r_info = ELF32_R_INFO (dynindx, R_SH_DIR32);
+ rel.r_addend = (h->root.u.def.value
+ + h->root.u.def.section->output_offset);
+ }
+ else
+ {
+ rel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
+ rel.r_addend = (h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset);
+ }
}
else
{
rel.r_addend = 0;
}
- loc = srel->contents;
- loc += srel->reloc_count++ * sizeof (Elf32_External_Rela);
+ loc = srelgot->contents;
+ loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
}
if (eh->datalabel_got.offset != (bfd_vma) -1)
{
asection *sgot;
- asection *srel;
+ asection *srelgot;
Elf_Internal_Rela rel;
bfd_byte *loc;
Set it up. */
sgot = htab->sgot;
- srel = htab->srelgot;
- BFD_ASSERT (sgot != NULL && srel != NULL);
+ srelgot = htab->srelgot;
+ BFD_ASSERT (sgot != NULL && srelgot != NULL);
rel.r_offset = (sgot->output_section->vma
+ sgot->output_offset
if (info->shared
&& SYMBOL_REFERENCES_LOCAL (info, h))
{
- rel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
- rel.r_addend = (h->root.u.def.value
- + h->root.u.def.section->output_section->vma
- + h->root.u.def.section->output_offset);
+ if (htab->fdpic_p)
+ {
+ asection *sec = h->root.u.def.section;
+ int dynindx
+ = elf_section_data (sec->output_section)->dynindx;
+
+ rel.r_info = ELF32_R_INFO (dynindx, R_SH_DIR32);
+ rel.r_addend = (h->root.u.def.value
+ + h->root.u.def.section->output_offset);
+ }
+ else
+ {
+ rel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
+ rel.r_addend = (h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset);
+ }
}
else
{
rel.r_addend = 0;
}
- loc = srel->contents;
- loc += srel->reloc_count++ * sizeof (Elf32_External_Rela);
+ loc = srelgot->contents;
+ loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
}
}
&& (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak));
- s = bfd_get_section_by_name (h->root.u.def.section->owner,
- ".rela.bss");
+ s = bfd_get_linker_section (htab->root.dynobj, ".rela.bss");
BFD_ASSERT (s != NULL);
rel.r_offset = (h->root.u.def.value
/* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
_GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
".got" section. */
- if (strcmp (h->root.root.string, "_DYNAMIC") == 0
+ if (h == htab->root.hdynamic
|| (!htab->vxworks_p && h == htab->root.hgot))
sym->st_shndx = SHN_ABS;
sh_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
{
struct elf_sh_link_hash_table *htab;
- asection *sgot;
+ asection *sgotplt;
asection *sdyn;
htab = sh_elf_hash_table (info);
- sgot = htab->sgotplt;
- sdyn = bfd_get_section_by_name (htab->root.dynobj, ".dynamic");
+ if (htab == NULL)
+ return FALSE;
+
+ sgotplt = htab->sgotplt;
+ sdyn = bfd_get_linker_section (htab->root.dynobj, ".dynamic");
if (htab->root.dynamic_sections_created)
{
asection *splt;
Elf32_External_Dyn *dyncon, *dynconend;
- BFD_ASSERT (sgot != NULL && sdyn != NULL);
+ BFD_ASSERT (sgotplt != NULL && sdyn != NULL);
dyncon = (Elf32_External_Dyn *) sdyn->contents;
dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
switch (dyn.d_tag)
{
default:
+ if (htab->vxworks_p
+ && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
break;
#ifdef INCLUDE_SHMEDIA
#endif
case DT_PLTGOT:
- s = htab->sgot->output_section;
- goto get_vma;
+ BFD_ASSERT (htab->root.hgot != NULL);
+ s = htab->root.hgot->root.u.def.section;
+ dyn.d_un.d_ptr = htab->root.hgot->root.u.def.value
+ + s->output_section->vma + s->output_offset;
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
case DT_JMPREL:
s = htab->srelplt->output_section;
- get_vma:
BFD_ASSERT (s != NULL);
dyn.d_un.d_ptr = s->vma;
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
for (i = 0; i < ARRAY_SIZE (htab->plt_info->plt0_got_fields); i++)
if (htab->plt_info->plt0_got_fields[i] != MINUS_ONE)
install_plt_field (output_bfd, FALSE,
- (sgot->output_section->vma
- + sgot->output_offset
+ (sgotplt->output_section->vma
+ + sgotplt->output_offset
+ (i * 4)),
(splt->contents
+ htab->plt_info->plt0_got_fields[i]));
}
/* Fill in the first three entries in the global offset table. */
- if (sgot && sgot->size > 0)
+ if (sgotplt && sgotplt->size > 0 && !htab->fdpic_p)
{
if (sdyn == NULL)
- bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
+ bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents);
else
bfd_put_32 (output_bfd,
sdyn->output_section->vma + sdyn->output_offset,
- sgot->contents);
- bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
- bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
+ sgotplt->contents);
+ bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 4);
+ bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 8);
+ }
+
+ if (sgotplt && sgotplt->size > 0)
+ elf_section_data (sgotplt->output_section)->this_hdr.sh_entsize = 4;
- elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
+ /* At the very end of the .rofixup section is a pointer to the GOT. */
+ if (htab->fdpic_p && htab->srofixup != NULL)
+ {
+ struct elf_link_hash_entry *hgot = htab->root.hgot;
+ bfd_vma got_value = hgot->root.u.def.value
+ + hgot->root.u.def.section->output_section->vma
+ + hgot->root.u.def.section->output_offset;
+
+ sh_elf_add_rofixup (output_bfd, htab->srofixup, got_value);
+
+ /* Make sure we allocated and generated the same number of fixups. */
+ BFD_ASSERT (htab->srofixup->reloc_count * 4 == htab->srofixup->size);
}
+ if (htab->srelfuncdesc)
+ BFD_ASSERT (htab->srelfuncdesc->reloc_count * sizeof (Elf32_External_Rela)
+ == htab->srelfuncdesc->size);
+
+ if (htab->srelgot)
+ BFD_ASSERT (htab->srelgot->reloc_count * sizeof (Elf32_External_Rela)
+ == htab->srelgot->size);
+
return TRUE;
}
static enum elf_reloc_type_class
-sh_elf_reloc_type_class (const Elf_Internal_Rela *rela)
+sh_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
+ const asection *rel_sec ATTRIBUTE_UNUSED,
+ const Elf_Internal_Rela *rela)
{
switch ((int) ELF32_R_TYPE (rela->r_info))
{
case 168: /* Linux/SH */
/* pr_cursig */
- elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
+ elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
/* pr_pid */
- elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
+ elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
/* pr_reg */
offset = 72;
return FALSE;
case 124: /* Linux/SH elf_prpsinfo */
- elf_tdata (abfd)->core_program
+ elf_tdata (abfd)->core->program
= _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
- elf_tdata (abfd)->core_command
+ elf_tdata (abfd)->core->command
= _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
}
implementations, so strip it off if it exists. */
{
- char *command = elf_tdata (abfd)->core_command;
+ char *command = elf_tdata (abfd)->core->command;
int n = strlen (command);
if (0 < n && command[n - 1] == ' ')
}
#endif /* not SH_TARGET_ALREADY_DEFINED */
-
+
/* Return address for Ith PLT stub in section PLT, for relocation REL
or (bfd_vma) -1 if it should not be included. */
return plt->vma + get_plt_offset (plt_info, i);
}
+/* Decide whether to attempt to turn absptr or lsda encodings in
+ shared libraries into pcrel within the given input section. */
+
+static bfd_boolean
+sh_elf_use_relative_eh_frame (bfd *input_bfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info,
+ asection *eh_frame_section ATTRIBUTE_UNUSED)
+{
+ struct elf_sh_link_hash_table *htab = sh_elf_hash_table (info);
+
+ /* We can't use PC-relative encodings in FDPIC binaries, in general. */
+ if (htab->fdpic_p)
+ return FALSE;
+
+ return TRUE;
+}
+
+/* Adjust the contents of an eh_frame_hdr section before they're output. */
+
+static bfd_byte
+sh_elf_encode_eh_address (bfd *abfd,
+ struct bfd_link_info *info,
+ asection *osec, bfd_vma offset,
+ asection *loc_sec, bfd_vma loc_offset,
+ bfd_vma *encoded)
+{
+ struct elf_sh_link_hash_table *htab = sh_elf_hash_table (info);
+ struct elf_link_hash_entry *h;
+
+ if (!htab->fdpic_p)
+ return _bfd_elf_encode_eh_address (abfd, info, osec, offset, loc_sec,
+ loc_offset, encoded);
+
+ h = htab->root.hgot;
+ BFD_ASSERT (h && h->root.type == bfd_link_hash_defined);
+
+ if (! h || (sh_elf_osec_to_segment (abfd, osec)
+ == sh_elf_osec_to_segment (abfd, loc_sec->output_section)))
+ return _bfd_elf_encode_eh_address (abfd, info, osec, offset,
+ loc_sec, loc_offset, encoded);
+
+ BFD_ASSERT (sh_elf_osec_to_segment (abfd, osec)
+ == (sh_elf_osec_to_segment
+ (abfd, h->root.u.def.section->output_section)));
+
+ *encoded = osec->vma + offset
+ - (h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset);
+
+ return DW_EH_PE_datarel | DW_EH_PE_sdata4;
+}
+
#if !defined SH_TARGET_ALREADY_DEFINED
-#define TARGET_BIG_SYM bfd_elf32_sh_vec
+#define TARGET_BIG_SYM sh_elf32_vec
#define TARGET_BIG_NAME "elf32-sh"
-#define TARGET_LITTLE_SYM bfd_elf32_shl_vec
+#define TARGET_LITTLE_SYM sh_elf32_le_vec
#define TARGET_LITTLE_NAME "elf32-shl"
#endif
#define ELF_ARCH bfd_arch_sh
+#define ELF_TARGET_ID SH_ELF_DATA
#define ELF_MACHINE_CODE EM_SH
#ifdef __QNXTARGET__
#define ELF_MAXPAGESIZE 0x1000
#define elf_symbol_leading_char '_'
#define bfd_elf32_bfd_reloc_type_lookup sh_elf_reloc_type_lookup
+#define bfd_elf32_bfd_reloc_name_lookup \
+ sh_elf_reloc_name_lookup
#define elf_info_to_howto sh_elf_info_to_howto
#define bfd_elf32_bfd_relax_section sh_elf_relax_section
#define elf_backend_relocate_section sh_elf_relocate_section
sh_elf_get_relocated_section_contents
#define bfd_elf32_mkobject sh_elf_mkobject
#define elf_backend_object_p sh_elf_object_p
-#define bfd_elf32_bfd_set_private_bfd_flags \
- sh_elf_set_private_flags
#define bfd_elf32_bfd_copy_private_bfd_data \
sh_elf_copy_private_data
#define bfd_elf32_bfd_merge_private_bfd_data \
sh_elf_always_size_sections
#define elf_backend_size_dynamic_sections \
sh_elf_size_dynamic_sections
-#define elf_backend_omit_section_dynsym \
- ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
+#define elf_backend_omit_section_dynsym sh_elf_omit_section_dynsym
#define elf_backend_finish_dynamic_symbol \
sh_elf_finish_dynamic_symbol
#define elf_backend_finish_dynamic_sections \
sh_elf_finish_dynamic_sections
#define elf_backend_reloc_type_class sh_elf_reloc_type_class
#define elf_backend_plt_sym_val sh_elf_plt_sym_val
-
+#define elf_backend_can_make_relative_eh_frame \
+ sh_elf_use_relative_eh_frame
+#define elf_backend_can_make_lsda_relative_eh_frame \
+ sh_elf_use_relative_eh_frame
+#define elf_backend_encode_eh_address \
+ sh_elf_encode_eh_address
+
+#define elf_backend_stack_align 8
#define elf_backend_can_gc_sections 1
#define elf_backend_can_refcount 1
#define elf_backend_want_got_plt 1
/* NetBSD support. */
#undef TARGET_BIG_SYM
-#define TARGET_BIG_SYM bfd_elf32_shnbsd_vec
+#define TARGET_BIG_SYM sh_elf32_nbsd_vec
#undef TARGET_BIG_NAME
#define TARGET_BIG_NAME "elf32-sh-nbsd"
#undef TARGET_LITTLE_SYM
-#define TARGET_LITTLE_SYM bfd_elf32_shlnbsd_vec
+#define TARGET_LITTLE_SYM sh_elf32_nbsd_le_vec
#undef TARGET_LITTLE_NAME
#define TARGET_LITTLE_NAME "elf32-shl-nbsd"
#undef ELF_MAXPAGESIZE
/* Linux support. */
#undef TARGET_BIG_SYM
-#define TARGET_BIG_SYM bfd_elf32_shblin_vec
+#define TARGET_BIG_SYM sh_elf32_linux_be_vec
#undef TARGET_BIG_NAME
#define TARGET_BIG_NAME "elf32-shbig-linux"
#undef TARGET_LITTLE_SYM
-#define TARGET_LITTLE_SYM bfd_elf32_shlin_vec
+#define TARGET_LITTLE_SYM sh_elf32_linux_vec
#undef TARGET_LITTLE_NAME
#define TARGET_LITTLE_NAME "elf32-sh-linux"
#undef ELF_COMMONPAGESIZE
#include "elf32-target.h"
+
+/* FDPIC support. */
+#undef TARGET_BIG_SYM
+#define TARGET_BIG_SYM sh_elf32_fdpic_be_vec
+#undef TARGET_BIG_NAME
+#define TARGET_BIG_NAME "elf32-shbig-fdpic"
+#undef TARGET_LITTLE_SYM
+#define TARGET_LITTLE_SYM sh_elf32_fdpic_le_vec
+#undef TARGET_LITTLE_NAME
+#define TARGET_LITTLE_NAME "elf32-sh-fdpic"
+
+#undef elf32_bed
+#define elf32_bed elf32_sh_fd_bed
+
+#include "elf32-target.h"
+
+#undef elf_backend_modify_program_headers
+
+/* VxWorks support. */
#undef TARGET_BIG_SYM
-#define TARGET_BIG_SYM bfd_elf32_shvxworks_vec
+#define TARGET_BIG_SYM sh_elf32_vxworks_vec
#undef TARGET_BIG_NAME
#define TARGET_BIG_NAME "elf32-sh-vxworks"
#undef TARGET_LITTLE_SYM
-#define TARGET_LITTLE_SYM bfd_elf32_shlvxworks_vec
+#define TARGET_LITTLE_SYM sh_elf32_vxworks_le_vec
#undef TARGET_LITTLE_NAME
#define TARGET_LITTLE_NAME "elf32-shl-vxworks"
#undef elf32_bed
projects / binutils.git / blobdiff