diff options
Diffstat (limited to 'binutils-2.24/bfd/elf64-alpha.c')
| -rw-r--r-- | binutils-2.24/bfd/elf64-alpha.c | 5549 |
1 files changed, 0 insertions, 5549 deletions
diff --git a/binutils-2.24/bfd/elf64-alpha.c b/binutils-2.24/bfd/elf64-alpha.c deleted file mode 100644 index 289164fd..00000000 --- a/binutils-2.24/bfd/elf64-alpha.c +++ /dev/null @@ -1,5549 +0,0 @@ -/* Alpha specific support for 64-bit ELF - Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, - 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 - Free Software Foundation, Inc. - Contributed by Richard Henderson <rth@tamu.edu>. - - 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 3 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - 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. */ - - -/* We need a published ABI spec for this. Until one comes out, don't - assume this'll remain unchanged forever. */ - -#include "sysdep.h" -#include "bfd.h" -#include "libbfd.h" -#include "elf-bfd.h" - -#include "elf/alpha.h" - -#define ALPHAECOFF - -#define NO_COFF_RELOCS -#define NO_COFF_SYMBOLS -#define NO_COFF_LINENOS - -/* Get the ECOFF swapping routines. Needed for the debug information. */ -#include "coff/internal.h" -#include "coff/sym.h" -#include "coff/symconst.h" -#include "coff/ecoff.h" -#include "coff/alpha.h" -#include "aout/ar.h" -#include "libcoff.h" -#include "libecoff.h" -#define ECOFF_64 -#include "ecoffswap.h" - - -/* Instruction data for plt generation and relaxation. */ - -#define OP_LDA 0x08 -#define OP_LDAH 0x09 -#define OP_LDQ 0x29 -#define OP_BR 0x30 -#define OP_BSR 0x34 - -#define INSN_LDA (OP_LDA << 26) -#define INSN_LDAH (OP_LDAH << 26) -#define INSN_LDQ (OP_LDQ << 26) -#define INSN_BR (OP_BR << 26) - -#define INSN_ADDQ 0x40000400 -#define INSN_RDUNIQ 0x0000009e -#define INSN_SUBQ 0x40000520 -#define INSN_S4SUBQ 0x40000560 -#define INSN_UNOP 0x2ffe0000 - -#define INSN_JSR 0x68004000 -#define INSN_JMP 0x68000000 -#define INSN_JSR_MASK 0xfc00c000 - -#define INSN_A(I,A) (I | (A << 21)) -#define INSN_AB(I,A,B) (I | (A << 21) | (B << 16)) -#define INSN_ABC(I,A,B,C) (I | (A << 21) | (B << 16) | C) -#define INSN_ABO(I,A,B,O) (I | (A << 21) | (B << 16) | ((O) & 0xffff)) -#define INSN_AD(I,A,D) (I | (A << 21) | (((D) >> 2) & 0x1fffff)) - -/* PLT/GOT Stuff */ - -/* Set by ld emulation. Putting this into the link_info or hash structure - is simply working too hard. */ -#ifdef USE_SECUREPLT -bfd_boolean elf64_alpha_use_secureplt = TRUE; -#else -bfd_boolean elf64_alpha_use_secureplt = FALSE; -#endif - -#define OLD_PLT_HEADER_SIZE 32 -#define OLD_PLT_ENTRY_SIZE 12 -#define NEW_PLT_HEADER_SIZE 36 -#define NEW_PLT_ENTRY_SIZE 4 - -#define PLT_HEADER_SIZE \ - (elf64_alpha_use_secureplt ? NEW_PLT_HEADER_SIZE : OLD_PLT_HEADER_SIZE) -#define PLT_ENTRY_SIZE \ - (elf64_alpha_use_secureplt ? NEW_PLT_ENTRY_SIZE : OLD_PLT_ENTRY_SIZE) - -#define MAX_GOT_SIZE (64*1024) - -#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so" - - -/* Used to implement multiple .got subsections. */ -struct alpha_elf_got_entry -{ - struct alpha_elf_got_entry *next; - - /* Which .got subsection? */ - bfd *gotobj; - - /* The addend in effect for this entry. */ - bfd_vma addend; - - /* The .got offset for this entry. */ - int got_offset; - - /* The .plt offset for this entry. */ - int plt_offset; - - /* How many references to this entry? */ - int use_count; - - /* The relocation type of this entry. */ - unsigned char reloc_type; - - /* How a LITERAL is used. */ - unsigned char flags; - - /* Have we initialized the dynamic relocation for this entry? */ - unsigned char reloc_done; - - /* Have we adjusted this entry for SEC_MERGE? */ - unsigned char reloc_xlated; -}; - -struct alpha_elf_reloc_entry -{ - struct alpha_elf_reloc_entry *next; - - /* Which .reloc section? */ - asection *srel; - - /* What kind of relocation? */ - unsigned int rtype; - - /* Is this against read-only section? */ - unsigned int reltext : 1; - - /* How many did we find? */ - unsigned long count; -}; - -struct alpha_elf_link_hash_entry -{ - struct elf_link_hash_entry root; - - /* External symbol information. */ - EXTR esym; - - /* Cumulative flags for all the .got entries. */ - int flags; - - /* Contexts in which a literal was referenced. */ -#define ALPHA_ELF_LINK_HASH_LU_ADDR 0x01 -#define ALPHA_ELF_LINK_HASH_LU_MEM 0x02 -#define ALPHA_ELF_LINK_HASH_LU_BYTE 0x04 -#define ALPHA_ELF_LINK_HASH_LU_JSR 0x08 -#define ALPHA_ELF_LINK_HASH_LU_TLSGD 0x10 -#define ALPHA_ELF_LINK_HASH_LU_TLSLDM 0x20 -#define ALPHA_ELF_LINK_HASH_LU_JSRDIRECT 0x40 -#define ALPHA_ELF_LINK_HASH_LU_PLT 0x38 -#define ALPHA_ELF_LINK_HASH_TLS_IE 0x80 - - /* Used to implement multiple .got subsections. */ - struct alpha_elf_got_entry *got_entries; - - /* Used to count non-got, non-plt relocations for delayed sizing - of relocation sections. */ - struct alpha_elf_reloc_entry *reloc_entries; -}; - -/* Alpha ELF linker hash table. */ - -struct alpha_elf_link_hash_table -{ - struct elf_link_hash_table root; - - /* The head of a list of .got subsections linked through - alpha_elf_tdata(abfd)->got_link_next. */ - bfd *got_list; - - /* The most recent relax pass that we've seen. The GOTs - should be regenerated if this doesn't match. */ - int relax_trip; -}; - -/* Look up an entry in a Alpha ELF linker hash table. */ - -#define alpha_elf_link_hash_lookup(table, string, create, copy, follow) \ - ((struct alpha_elf_link_hash_entry *) \ - elf_link_hash_lookup (&(table)->root, (string), (create), \ - (copy), (follow))) - -/* Traverse a Alpha ELF linker hash table. */ - -#define alpha_elf_link_hash_traverse(table, func, info) \ - (elf_link_hash_traverse \ - (&(table)->root, \ - (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ - (info))) - -/* Get the Alpha ELF linker hash table from a link_info structure. */ - -#define alpha_elf_hash_table(p) \ - (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ - == ALPHA_ELF_DATA ? ((struct alpha_elf_link_hash_table *) ((p)->hash)) : NULL) - -/* Get the object's symbols as our own entry type. */ - -#define alpha_elf_sym_hashes(abfd) \ - ((struct alpha_elf_link_hash_entry **)elf_sym_hashes(abfd)) - -/* Should we do dynamic things to this symbol? This differs from the - generic version in that we never need to consider function pointer - equality wrt PLT entries -- we don't create a PLT entry if a symbol's - address is ever taken. */ - -static inline bfd_boolean -alpha_elf_dynamic_symbol_p (struct elf_link_hash_entry *h, - struct bfd_link_info *info) -{ - return _bfd_elf_dynamic_symbol_p (h, info, 0); -} - -/* Create an entry in a Alpha ELF linker hash table. */ - -static struct bfd_hash_entry * -elf64_alpha_link_hash_newfunc (struct bfd_hash_entry *entry, - struct bfd_hash_table *table, - const char *string) -{ - struct alpha_elf_link_hash_entry *ret = - (struct alpha_elf_link_hash_entry *) entry; - - /* Allocate the structure if it has not already been allocated by a - subclass. */ - if (ret == (struct alpha_elf_link_hash_entry *) NULL) - ret = ((struct alpha_elf_link_hash_entry *) - bfd_hash_allocate (table, - sizeof (struct alpha_elf_link_hash_entry))); - if (ret == (struct alpha_elf_link_hash_entry *) NULL) - return (struct bfd_hash_entry *) ret; - - /* Call the allocation method of the superclass. */ - ret = ((struct alpha_elf_link_hash_entry *) - _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, - table, string)); - if (ret != (struct alpha_elf_link_hash_entry *) NULL) - { - /* Set local fields. */ - memset (&ret->esym, 0, sizeof (EXTR)); - /* We use -2 as a marker to indicate that the information has - not been set. -1 means there is no associated ifd. */ - ret->esym.ifd = -2; - ret->flags = 0; - ret->got_entries = NULL; - ret->reloc_entries = NULL; - } - - return (struct bfd_hash_entry *) ret; -} - -/* Create a Alpha ELF linker hash table. */ - -static struct bfd_link_hash_table * -elf64_alpha_bfd_link_hash_table_create (bfd *abfd) -{ - struct alpha_elf_link_hash_table *ret; - bfd_size_type amt = sizeof (struct alpha_elf_link_hash_table); - - ret = (struct alpha_elf_link_hash_table *) bfd_zmalloc (amt); - if (ret == (struct alpha_elf_link_hash_table *) NULL) - return NULL; - - if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, - elf64_alpha_link_hash_newfunc, - sizeof (struct alpha_elf_link_hash_entry), - ALPHA_ELF_DATA)) - { - free (ret); - return NULL; - } - - return &ret->root.root; -} - -/* Alpha ELF follows MIPS ELF in using a special find_nearest_line - routine in order to handle the ECOFF debugging information. */ - -struct alpha_elf_find_line -{ - struct ecoff_debug_info d; - struct ecoff_find_line i; -}; - -/* We have some private fields hanging off of the elf_tdata structure. */ - -struct alpha_elf_obj_tdata -{ - struct elf_obj_tdata root; - - /* For every input file, these are the got entries for that object's - local symbols. */ - struct alpha_elf_got_entry ** local_got_entries; - - /* For every input file, this is the object that owns the got that - this input file uses. */ - bfd *gotobj; - - /* For every got, this is a linked list through the objects using this got */ - bfd *in_got_link_next; - - /* For every got, this is a link to the next got subsegment. */ - bfd *got_link_next; - - /* For every got, this is the section. */ - asection *got; - - /* For every got, this is it's total number of words. */ - int total_got_size; - - /* For every got, this is the sum of the number of words required - to hold all of the member object's local got. */ - int local_got_size; - - /* Used by elf64_alpha_find_nearest_line entry point. */ - struct alpha_elf_find_line *find_line_info; - -}; - -#define alpha_elf_tdata(abfd) \ - ((struct alpha_elf_obj_tdata *) (abfd)->tdata.any) - -#define is_alpha_elf(bfd) \ - (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ - && elf_tdata (bfd) != NULL \ - && elf_object_id (bfd) == ALPHA_ELF_DATA) - -static bfd_boolean -elf64_alpha_mkobject (bfd *abfd) -{ - return bfd_elf_allocate_object (abfd, sizeof (struct alpha_elf_obj_tdata), - ALPHA_ELF_DATA); -} - -static bfd_boolean -elf64_alpha_object_p (bfd *abfd) -{ - /* Set the right machine number for an Alpha ELF file. */ - return bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0); -} - -/* A relocation function which doesn't do anything. */ - -static bfd_reloc_status_type -elf64_alpha_reloc_nil (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc, - asymbol *sym ATTRIBUTE_UNUSED, - void * data ATTRIBUTE_UNUSED, asection *sec, - bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) -{ - if (output_bfd) - reloc->address += sec->output_offset; - return bfd_reloc_ok; -} - -/* A relocation function used for an unsupported reloc. */ - -static bfd_reloc_status_type -elf64_alpha_reloc_bad (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc, - asymbol *sym ATTRIBUTE_UNUSED, - void * data ATTRIBUTE_UNUSED, asection *sec, - bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) -{ - if (output_bfd) - reloc->address += sec->output_offset; - return bfd_reloc_notsupported; -} - -/* Do the work of the GPDISP relocation. */ - -static bfd_reloc_status_type -elf64_alpha_do_reloc_gpdisp (bfd *abfd, bfd_vma gpdisp, bfd_byte *p_ldah, - bfd_byte *p_lda) -{ - bfd_reloc_status_type ret = bfd_reloc_ok; - bfd_vma addend; - unsigned long i_ldah, i_lda; - - i_ldah = bfd_get_32 (abfd, p_ldah); - i_lda = bfd_get_32 (abfd, p_lda); - - /* Complain if the instructions are not correct. */ - if (((i_ldah >> 26) & 0x3f) != 0x09 - || ((i_lda >> 26) & 0x3f) != 0x08) - ret = bfd_reloc_dangerous; - - /* Extract the user-supplied offset, mirroring the sign extensions - that the instructions perform. */ - addend = ((i_ldah & 0xffff) << 16) | (i_lda & 0xffff); - addend = (addend ^ 0x80008000) - 0x80008000; - - gpdisp += addend; - - if ((bfd_signed_vma) gpdisp < -(bfd_signed_vma) 0x80000000 - || (bfd_signed_vma) gpdisp >= (bfd_signed_vma) 0x7fff8000) - ret = bfd_reloc_overflow; - - /* compensate for the sign extension again. */ - i_ldah = ((i_ldah & 0xffff0000) - | (((gpdisp >> 16) + ((gpdisp >> 15) & 1)) & 0xffff)); - i_lda = (i_lda & 0xffff0000) | (gpdisp & 0xffff); - - bfd_put_32 (abfd, (bfd_vma) i_ldah, p_ldah); - bfd_put_32 (abfd, (bfd_vma) i_lda, p_lda); - - return ret; -} - -/* The special function for the GPDISP reloc. */ - -static bfd_reloc_status_type -elf64_alpha_reloc_gpdisp (bfd *abfd, arelent *reloc_entry, - asymbol *sym ATTRIBUTE_UNUSED, void * data, - asection *input_section, bfd *output_bfd, - char **err_msg) -{ - bfd_reloc_status_type ret; - bfd_vma gp, relocation; - bfd_vma high_address; - bfd_byte *p_ldah, *p_lda; - - /* Don't do anything if we're not doing a final link. */ - if (output_bfd) - { - reloc_entry->address += input_section->output_offset; - return bfd_reloc_ok; - } - - high_address = bfd_get_section_limit (abfd, input_section); - if (reloc_entry->address > high_address - || reloc_entry->address + reloc_entry->addend > high_address) - return bfd_reloc_outofrange; - - /* The gp used in the portion of the output object to which this - input object belongs is cached on the input bfd. */ - gp = _bfd_get_gp_value (abfd); - - relocation = (input_section->output_section->vma - + input_section->output_offset - + reloc_entry->address); - - p_ldah = (bfd_byte *) data + reloc_entry->address; - p_lda = p_ldah + reloc_entry->addend; - - ret = elf64_alpha_do_reloc_gpdisp (abfd, gp - relocation, p_ldah, p_lda); - - /* Complain if the instructions are not correct. */ - if (ret == bfd_reloc_dangerous) - *err_msg = _("GPDISP relocation did not find ldah and lda instructions"); - - return ret; -} - -/* In case we're on a 32-bit machine, construct a 64-bit "-1" value - from smaller values. Start with zero, widen, *then* decrement. */ -#define MINUS_ONE (((bfd_vma)0) - 1) - - -#define SKIP_HOWTO(N) \ - HOWTO(N, 0, 0, 0, 0, 0, complain_overflow_dont, elf64_alpha_reloc_bad, 0, 0, 0, 0, 0) - -static reloc_howto_type elf64_alpha_howto_table[] = -{ - HOWTO (R_ALPHA_NONE, /* type */ - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 8, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - elf64_alpha_reloc_nil, /* special_function */ - "NONE", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* A 32 bit reference to a symbol. */ - HOWTO (R_ALPHA_REFLONG, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "REFLONG", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* A 64 bit reference to a symbol. */ - HOWTO (R_ALPHA_REFQUAD, /* type */ - 0, /* rightshift */ - 4, /* size (0 = byte, 1 = short, 2 = long) */ - 64, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "REFQUAD", /* name */ - FALSE, /* partial_inplace */ - MINUS_ONE, /* src_mask */ - MINUS_ONE, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* A 32 bit GP relative offset. This is just like REFLONG except - that when the value is used the value of the gp register will be - added in. */ - HOWTO (R_ALPHA_GPREL32, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "GPREL32", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* Used for an instruction that refers to memory off the GP register. */ - HOWTO (R_ALPHA_LITERAL, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "ELF_LITERAL", /* name */ - FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* This reloc only appears immediately following an ELF_LITERAL reloc. - It identifies a use of the literal. The symbol index is special: - 1 means the literal address is in the base register of a memory - format instruction; 2 means the literal address is in the byte - offset register of a byte-manipulation instruction; 3 means the - literal address is in the target register of a jsr instruction. - This does not actually do any relocation. */ - HOWTO (R_ALPHA_LITUSE, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - elf64_alpha_reloc_nil, /* special_function */ - "LITUSE", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* Load the gp register. This is always used for a ldah instruction - which loads the upper 16 bits of the gp register. The symbol - index of the GPDISP instruction is an offset in bytes to the lda - instruction that loads the lower 16 bits. The value to use for - the relocation is the difference between the GP value and the - current location; the load will always be done against a register - holding the current address. - - NOTE: Unlike ECOFF, partial in-place relocation is not done. If - any offset is present in the instructions, it is an offset from - the register to the ldah instruction. This lets us avoid any - stupid hackery like inventing a gp value to do partial relocation - against. Also unlike ECOFF, we do the whole relocation off of - the GPDISP rather than a GPDISP_HI16/GPDISP_LO16 pair. An odd, - space consuming bit, that, since all the information was present - in the GPDISP_HI16 reloc. */ - HOWTO (R_ALPHA_GPDISP, /* type */ - 16, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - elf64_alpha_reloc_gpdisp, /* special_function */ - "GPDISP", /* name */ - FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* A 21 bit branch. */ - HOWTO (R_ALPHA_BRADDR, /* type */ - 2, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 21, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "BRADDR", /* name */ - FALSE, /* partial_inplace */ - 0x1fffff, /* src_mask */ - 0x1fffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* A hint for a jump to a register. */ - HOWTO (R_ALPHA_HINT, /* type */ - 2, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 14, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "HINT", /* name */ - FALSE, /* partial_inplace */ - 0x3fff, /* src_mask */ - 0x3fff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* 16 bit PC relative offset. */ - HOWTO (R_ALPHA_SREL16, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "SREL16", /* name */ - FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* 32 bit PC relative offset. */ - HOWTO (R_ALPHA_SREL32, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "SREL32", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* A 64 bit PC relative offset. */ - HOWTO (R_ALPHA_SREL64, /* type */ - 0, /* rightshift */ - 4, /* size (0 = byte, 1 = short, 2 = long) */ - 64, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "SREL64", /* name */ - FALSE, /* partial_inplace */ - MINUS_ONE, /* src_mask */ - MINUS_ONE, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* Skip 12 - 16; deprecated ECOFF relocs. */ - SKIP_HOWTO (12), - SKIP_HOWTO (13), - SKIP_HOWTO (14), - SKIP_HOWTO (15), - SKIP_HOWTO (16), - - /* The high 16 bits of the displacement from GP to the target. */ - HOWTO (R_ALPHA_GPRELHIGH, - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "GPRELHIGH", /* name */ - FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* The low 16 bits of the displacement from GP to the target. */ - HOWTO (R_ALPHA_GPRELLOW, - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "GPRELLOW", /* name */ - FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* A 16-bit displacement from the GP to the target. */ - HOWTO (R_ALPHA_GPREL16, - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "GPREL16", /* name */ - FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* Skip 20 - 23; deprecated ECOFF relocs. */ - SKIP_HOWTO (20), - SKIP_HOWTO (21), - SKIP_HOWTO (22), - SKIP_HOWTO (23), - - /* Misc ELF relocations. */ - - /* A dynamic relocation to copy the target into our .dynbss section. */ - /* Not generated, as all Alpha objects use PIC, so it is not needed. It - is present because every other ELF has one, but should not be used - because .dynbss is an ugly thing. */ - HOWTO (R_ALPHA_COPY, - 0, - 0, - 0, - FALSE, - 0, - complain_overflow_dont, - bfd_elf_generic_reloc, - "COPY", - FALSE, - 0, - 0, - TRUE), - - /* A dynamic relocation for a .got entry. */ - HOWTO (R_ALPHA_GLOB_DAT, - 0, - 0, - 0, - FALSE, - 0, - complain_overflow_dont, - bfd_elf_generic_reloc, - "GLOB_DAT", - FALSE, - 0, - 0, - TRUE), - - /* A dynamic relocation for a .plt entry. */ - HOWTO (R_ALPHA_JMP_SLOT, - 0, - 0, - 0, - FALSE, - 0, - complain_overflow_dont, - bfd_elf_generic_reloc, - "JMP_SLOT", - FALSE, - 0, - 0, - TRUE), - - /* A dynamic relocation to add the base of the DSO to a 64-bit field. */ - HOWTO (R_ALPHA_RELATIVE, - 0, - 0, - 0, - FALSE, - 0, - complain_overflow_dont, - bfd_elf_generic_reloc, - "RELATIVE", - FALSE, - 0, - 0, - TRUE), - - /* A 21 bit branch that adjusts for gp loads. */ - HOWTO (R_ALPHA_BRSGP, /* type */ - 2, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 21, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "BRSGP", /* name */ - FALSE, /* partial_inplace */ - 0x1fffff, /* src_mask */ - 0x1fffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* Creates a tls_index for the symbol in the got. */ - HOWTO (R_ALPHA_TLSGD, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "TLSGD", /* name */ - FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* Creates a tls_index for the (current) module in the got. */ - HOWTO (R_ALPHA_TLSLDM, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "TLSLDM", /* name */ - FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* A dynamic relocation for a DTP module entry. */ - HOWTO (R_ALPHA_DTPMOD64, /* type */ - 0, /* rightshift */ - 4, /* size (0 = byte, 1 = short, 2 = long) */ - 64, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "DTPMOD64", /* name */ - FALSE, /* partial_inplace */ - MINUS_ONE, /* src_mask */ - MINUS_ONE, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* Creates a 64-bit offset in the got for the displacement - from DTP to the target. */ - HOWTO (R_ALPHA_GOTDTPREL, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "GOTDTPREL", /* name */ - FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* A dynamic relocation for a displacement from DTP to the target. */ - HOWTO (R_ALPHA_DTPREL64, /* type */ - 0, /* rightshift */ - 4, /* size (0 = byte, 1 = short, 2 = long) */ - 64, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "DTPREL64", /* name */ - FALSE, /* partial_inplace */ - MINUS_ONE, /* src_mask */ - MINUS_ONE, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* The high 16 bits of the displacement from DTP to the target. */ - HOWTO (R_ALPHA_DTPRELHI, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "DTPRELHI", /* name */ - FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* The low 16 bits of the displacement from DTP to the target. */ - HOWTO (R_ALPHA_DTPRELLO, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "DTPRELLO", /* name */ - FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* A 16-bit displacement from DTP to the target. */ - HOWTO (R_ALPHA_DTPREL16, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "DTPREL16", /* name */ - FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* Creates a 64-bit offset in the got for the displacement - from TP to the target. */ - HOWTO (R_ALPHA_GOTTPREL, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "GOTTPREL", /* name */ - FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* A dynamic relocation for a displacement from TP to the target. */ - HOWTO (R_ALPHA_TPREL64, /* type */ - 0, /* rightshift */ - 4, /* size (0 = byte, 1 = short, 2 = long) */ - 64, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "TPREL64", /* name */ - FALSE, /* partial_inplace */ - MINUS_ONE, /* src_mask */ - MINUS_ONE, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* The high 16 bits of the displacement from TP to the target. */ - HOWTO (R_ALPHA_TPRELHI, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "TPRELHI", /* name */ - FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* The low 16 bits of the displacement from TP to the target. */ - HOWTO (R_ALPHA_TPRELLO, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "TPRELLO", /* name */ - FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* A 16-bit displacement from TP to the target. */ - HOWTO (R_ALPHA_TPREL16, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "TPREL16", /* name */ - FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ -}; - -/* A mapping from BFD reloc types to Alpha ELF reloc types. */ - -struct elf_reloc_map -{ - bfd_reloc_code_real_type bfd_reloc_val; - int elf_reloc_val; -}; - -static const struct elf_reloc_map elf64_alpha_reloc_map[] = -{ - {BFD_RELOC_NONE, R_ALPHA_NONE}, - {BFD_RELOC_32, R_ALPHA_REFLONG}, - {BFD_RELOC_64, R_ALPHA_REFQUAD}, - {BFD_RELOC_CTOR, R_ALPHA_REFQUAD}, - {BFD_RELOC_GPREL32, R_ALPHA_GPREL32}, - {BFD_RELOC_ALPHA_ELF_LITERAL, R_ALPHA_LITERAL}, - {BFD_RELOC_ALPHA_LITUSE, R_ALPHA_LITUSE}, - {BFD_RELOC_ALPHA_GPDISP, R_ALPHA_GPDISP}, - {BFD_RELOC_23_PCREL_S2, R_ALPHA_BRADDR}, - {BFD_RELOC_ALPHA_HINT, R_ALPHA_HINT}, - {BFD_RELOC_16_PCREL, R_ALPHA_SREL16}, - {BFD_RELOC_32_PCREL, R_ALPHA_SREL32}, - {BFD_RELOC_64_PCREL, R_ALPHA_SREL64}, - {BFD_RELOC_ALPHA_GPREL_HI16, R_ALPHA_GPRELHIGH}, - {BFD_RELOC_ALPHA_GPREL_LO16, R_ALPHA_GPRELLOW}, - {BFD_RELOC_GPREL16, R_ALPHA_GPREL16}, - {BFD_RELOC_ALPHA_BRSGP, R_ALPHA_BRSGP}, - {BFD_RELOC_ALPHA_TLSGD, R_ALPHA_TLSGD}, - {BFD_RELOC_ALPHA_TLSLDM, R_ALPHA_TLSLDM}, - {BFD_RELOC_ALPHA_DTPMOD64, R_ALPHA_DTPMOD64}, - {BFD_RELOC_ALPHA_GOTDTPREL16, R_ALPHA_GOTDTPREL}, - {BFD_RELOC_ALPHA_DTPREL64, R_ALPHA_DTPREL64}, - {BFD_RELOC_ALPHA_DTPREL_HI16, R_ALPHA_DTPRELHI}, - {BFD_RELOC_ALPHA_DTPREL_LO16, R_ALPHA_DTPRELLO}, - {BFD_RELOC_ALPHA_DTPREL16, R_ALPHA_DTPREL16}, - {BFD_RELOC_ALPHA_GOTTPREL16, R_ALPHA_GOTTPREL}, - {BFD_RELOC_ALPHA_TPREL64, R_ALPHA_TPREL64}, - {BFD_RELOC_ALPHA_TPREL_HI16, R_ALPHA_TPRELHI}, - {BFD_RELOC_ALPHA_TPREL_LO16, R_ALPHA_TPRELLO}, - {BFD_RELOC_ALPHA_TPREL16, R_ALPHA_TPREL16}, -}; - -/* Given a BFD reloc type, return a HOWTO structure. */ - -static reloc_howto_type * -elf64_alpha_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, - bfd_reloc_code_real_type code) -{ - const struct elf_reloc_map *i, *e; - i = e = elf64_alpha_reloc_map; - e += sizeof (elf64_alpha_reloc_map) / sizeof (struct elf_reloc_map); - for (; i != e; ++i) - { - if (i->bfd_reloc_val == code) - return &elf64_alpha_howto_table[i->elf_reloc_val]; - } - return 0; -} - -static reloc_howto_type * -elf64_alpha_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, - const char *r_name) -{ - unsigned int i; - - for (i = 0; - i < (sizeof (elf64_alpha_howto_table) - / sizeof (elf64_alpha_howto_table[0])); - i++) - if (elf64_alpha_howto_table[i].name != NULL - && strcasecmp (elf64_alpha_howto_table[i].name, r_name) == 0) - return &elf64_alpha_howto_table[i]; - - return NULL; -} - -/* Given an Alpha ELF reloc type, fill in an arelent structure. */ - -static void -elf64_alpha_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, - Elf_Internal_Rela *dst) -{ - unsigned r_type = ELF64_R_TYPE(dst->r_info); - BFD_ASSERT (r_type < (unsigned int) R_ALPHA_max); - cache_ptr->howto = &elf64_alpha_howto_table[r_type]; -} - -/* These two relocations create a two-word entry in the got. */ -#define alpha_got_entry_size(r_type) \ - (r_type == R_ALPHA_TLSGD || r_type == R_ALPHA_TLSLDM ? 16 : 8) - -/* This is PT_TLS segment p_vaddr. */ -#define alpha_get_dtprel_base(info) \ - (elf_hash_table (info)->tls_sec->vma) - -/* Main program TLS (whose template starts at PT_TLS p_vaddr) - is assigned offset round(16, PT_TLS p_align). */ -#define alpha_get_tprel_base(info) \ - (elf_hash_table (info)->tls_sec->vma \ - - align_power ((bfd_vma) 16, \ - elf_hash_table (info)->tls_sec->alignment_power)) - -/* Handle an Alpha specific section when reading an object file. This - is called when bfd_section_from_shdr finds a section with an unknown - type. - FIXME: We need to handle the SHF_ALPHA_GPREL flag, but I'm not sure - how to. */ - -static bfd_boolean -elf64_alpha_section_from_shdr (bfd *abfd, - Elf_Internal_Shdr *hdr, - const char *name, - int shindex) -{ - asection *newsect; - - /* There ought to be a place to keep ELF backend specific flags, but - at the moment there isn't one. We just keep track of the - sections by their name, instead. Fortunately, the ABI gives - suggested names for all the MIPS specific sections, so we will - probably get away with this. */ - switch (hdr->sh_type) - { - case SHT_ALPHA_DEBUG: - if (strcmp (name, ".mdebug") != 0) - return FALSE; - break; - default: - return FALSE; - } - - if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) - return FALSE; - newsect = hdr->bfd_section; - - if (hdr->sh_type == SHT_ALPHA_DEBUG) - { - if (! bfd_set_section_flags (abfd, newsect, - (bfd_get_section_flags (abfd, newsect) - | SEC_DEBUGGING))) - return FALSE; - } - - return TRUE; -} - -/* Convert Alpha specific section flags to bfd internal section flags. */ - -static bfd_boolean -elf64_alpha_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr) -{ - if (hdr->sh_flags & SHF_ALPHA_GPREL) - *flags |= SEC_SMALL_DATA; - - return TRUE; -} - -/* Set the correct type for an Alpha ELF section. We do this by the - section name, which is a hack, but ought to work. */ - -static bfd_boolean -elf64_alpha_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, asection *sec) -{ - register const char *name; - - name = bfd_get_section_name (abfd, sec); - - if (strcmp (name, ".mdebug") == 0) - { - hdr->sh_type = SHT_ALPHA_DEBUG; - /* In a shared object on Irix 5.3, the .mdebug section has an - entsize of 0. FIXME: Does this matter? */ - if ((abfd->flags & DYNAMIC) != 0 ) - hdr->sh_entsize = 0; - else - hdr->sh_entsize = 1; - } - else if ((sec->flags & SEC_SMALL_DATA) - || strcmp (name, ".sdata") == 0 - || strcmp (name, ".sbss") == 0 - || strcmp (name, ".lit4") == 0 - || strcmp (name, ".lit8") == 0) - hdr->sh_flags |= SHF_ALPHA_GPREL; - - return TRUE; -} - -/* Hook called by the linker routine which adds symbols from an object - file. We use it to put .comm items in .sbss, and not .bss. */ - -static bfd_boolean -elf64_alpha_add_symbol_hook (bfd *abfd, struct bfd_link_info *info, - Elf_Internal_Sym *sym, - const char **namep ATTRIBUTE_UNUSED, - flagword *flagsp ATTRIBUTE_UNUSED, - asection **secp, bfd_vma *valp) -{ - if (sym->st_shndx == SHN_COMMON - && !info->relocatable - && sym->st_size <= elf_gp_size (abfd)) - { - /* Common symbols less than or equal to -G nn bytes are - automatically put into .sbss. */ - - asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); - - if (scomm == NULL) - { - scomm = bfd_make_section_with_flags (abfd, ".scommon", - (SEC_ALLOC - | SEC_IS_COMMON - | SEC_LINKER_CREATED)); - if (scomm == NULL) - return FALSE; - } - - *secp = scomm; - *valp = sym->st_size; - } - - return TRUE; -} - -/* Create the .got section. */ - -static bfd_boolean -elf64_alpha_create_got_section (bfd *abfd, - struct bfd_link_info *info ATTRIBUTE_UNUSED) -{ - flagword flags; - asection *s; - - if (! is_alpha_elf (abfd)) - return FALSE; - - flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY - | SEC_LINKER_CREATED); - s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); - if (s == NULL - || !bfd_set_section_alignment (abfd, s, 3)) - return FALSE; - - alpha_elf_tdata (abfd)->got = s; - - /* Make sure the object's gotobj is set to itself so that we default - to every object with its own .got. We'll merge .gots later once - we've collected each object's info. */ - alpha_elf_tdata (abfd)->gotobj = abfd; - - return TRUE; -} - -/* Create all the dynamic sections. */ - -static bfd_boolean -elf64_alpha_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) -{ - asection *s; - flagword flags; - struct elf_link_hash_entry *h; - - if (! is_alpha_elf (abfd)) - return FALSE; - - /* We need to create .plt, .rela.plt, .got, and .rela.got sections. */ - - flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_IN_MEMORY - | SEC_LINKER_CREATED - | (elf64_alpha_use_secureplt ? SEC_READONLY : 0)); - s = bfd_make_section_anyway_with_flags (abfd, ".plt", flags); - if (s == NULL || ! bfd_set_section_alignment (abfd, s, 4)) - return FALSE; - - /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the - .plt section. */ - h = _bfd_elf_define_linkage_sym (abfd, info, s, - "_PROCEDURE_LINKAGE_TABLE_"); - elf_hash_table (info)->hplt = h; - if (h == NULL) - return FALSE; - - flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY - | SEC_LINKER_CREATED | SEC_READONLY); - s = bfd_make_section_anyway_with_flags (abfd, ".rela.plt", flags); - if (s == NULL || ! bfd_set_section_alignment (abfd, s, 3)) - return FALSE; - - if (elf64_alpha_use_secureplt) - { - flags = SEC_ALLOC | SEC_LINKER_CREATED; - s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); - if (s == NULL || ! bfd_set_section_alignment (abfd, s, 3)) - return FALSE; - } - - /* We may or may not have created a .got section for this object, but - we definitely havn't done the rest of the work. */ - - if (alpha_elf_tdata(abfd)->gotobj == NULL) - { - if (!elf64_alpha_create_got_section (abfd, info)) - return FALSE; - } - - flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY - | SEC_LINKER_CREATED | SEC_READONLY); - s = bfd_make_section_anyway_with_flags (abfd, ".rela.got", flags); - if (s == NULL - || !bfd_set_section_alignment (abfd, s, 3)) - return FALSE; - - /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the - dynobj's .got section. We don't do this in the linker script - because we don't want to define the symbol if we are not creating - a global offset table. */ - h = _bfd_elf_define_linkage_sym (abfd, info, alpha_elf_tdata(abfd)->got, - "_GLOBAL_OFFSET_TABLE_"); - elf_hash_table (info)->hgot = h; - if (h == NULL) - return FALSE; - - return TRUE; -} - -/* Read ECOFF debugging information from a .mdebug section into a - ecoff_debug_info structure. */ - -static bfd_boolean -elf64_alpha_read_ecoff_info (bfd *abfd, asection *section, - struct ecoff_debug_info *debug) -{ - HDRR *symhdr; - const struct ecoff_debug_swap *swap; - char *ext_hdr = NULL; - - swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; - memset (debug, 0, sizeof (*debug)); - - ext_hdr = (char *) bfd_malloc (swap->external_hdr_size); - if (ext_hdr == NULL && swap->external_hdr_size != 0) - goto error_return; - - if (! bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0, - swap->external_hdr_size)) - goto error_return; - - symhdr = &debug->symbolic_header; - (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); - - /* The symbolic header contains absolute file offsets and sizes to - read. */ -#define READ(ptr, offset, count, size, type) \ - if (symhdr->count == 0) \ - debug->ptr = NULL; \ - else \ - { \ - bfd_size_type amt = (bfd_size_type) size * symhdr->count; \ - debug->ptr = (type) bfd_malloc (amt); \ - if (debug->ptr == NULL) \ - goto error_return; \ - if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \ - || bfd_bread (debug->ptr, amt, abfd) != amt) \ - goto error_return; \ - } - - READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); - READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, void *); - READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, void *); - READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, void *); - READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, void *); - READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), - union aux_ext *); - READ (ss, cbSsOffset, issMax, sizeof (char), char *); - READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); - READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, void *); - READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, void *); - READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, void *); -#undef READ - - debug->fdr = NULL; - - return TRUE; - - error_return: - if (ext_hdr != NULL) - free (ext_hdr); - if (debug->line != NULL) - free (debug->line); - if (debug->external_dnr != NULL) - free (debug->external_dnr); - if (debug->external_pdr != NULL) - free (debug->external_pdr); - if (debug->external_sym != NULL) - free (debug->external_sym); - if (debug->external_opt != NULL) - free (debug->external_opt); - if (debug->external_aux != NULL) - free (debug->external_aux); - if (debug->ss != NULL) - free (debug->ss); - if (debug->ssext != NULL) - free (debug->ssext); - if (debug->external_fdr != NULL) - free (debug->external_fdr); - if (debug->external_rfd != NULL) - free (debug->external_rfd); - if (debug->external_ext != NULL) - free (debug->external_ext); - return FALSE; -} - -/* Alpha ELF local labels start with '$'. */ - -static bfd_boolean -elf64_alpha_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name) -{ - return name[0] == '$'; -} - -static bfd_boolean -elf64_alpha_find_nearest_line (bfd *abfd, asection *section, asymbol **symbols, - bfd_vma offset, const char **filename_ptr, - const char **functionname_ptr, - unsigned int *line_ptr) -{ - asection *msec; - - if (_bfd_dwarf2_find_nearest_line (abfd, dwarf_debug_sections, - section, symbols, offset, - filename_ptr, functionname_ptr, - line_ptr, NULL, 0, - &elf_tdata (abfd)->dwarf2_find_line_info)) - return TRUE; - - msec = bfd_get_section_by_name (abfd, ".mdebug"); - if (msec != NULL) - { - flagword origflags; - struct alpha_elf_find_line *fi; - const struct ecoff_debug_swap * const swap = - get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; - - /* If we are called during a link, alpha_elf_final_link may have - cleared the SEC_HAS_CONTENTS field. We force it back on here - if appropriate (which it normally will be). */ - origflags = msec->flags; - if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) - msec->flags |= SEC_HAS_CONTENTS; - - fi = alpha_elf_tdata (abfd)->find_line_info; - if (fi == NULL) - { - bfd_size_type external_fdr_size; - char *fraw_src; - char *fraw_end; - struct fdr *fdr_ptr; - bfd_size_type amt = sizeof (struct alpha_elf_find_line); - - fi = (struct alpha_elf_find_line *) bfd_zalloc (abfd, amt); - if (fi == NULL) - { - msec->flags = origflags; - return FALSE; - } - - if (!elf64_alpha_read_ecoff_info (abfd, msec, &fi->d)) - { - msec->flags = origflags; - return FALSE; - } - - /* Swap in the FDR information. */ - amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr); - fi->d.fdr = (struct fdr *) bfd_alloc (abfd, amt); - if (fi->d.fdr == NULL) - { - msec->flags = origflags; - return FALSE; - } - external_fdr_size = swap->external_fdr_size; - fdr_ptr = fi->d.fdr; - fraw_src = (char *) fi->d.external_fdr; - fraw_end = (fraw_src - + fi->d.symbolic_header.ifdMax * external_fdr_size); - for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) - (*swap->swap_fdr_in) (abfd, fraw_src, fdr_ptr); - - alpha_elf_tdata (abfd)->find_line_info = fi; - - /* Note that we don't bother to ever free this information. - find_nearest_line is either called all the time, as in - objdump -l, so the information should be saved, or it is - rarely called, as in ld error messages, so the memory - wasted is unimportant. Still, it would probably be a - good idea for free_cached_info to throw it away. */ - } - - if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, - &fi->i, filename_ptr, functionname_ptr, - line_ptr)) - { - msec->flags = origflags; - return TRUE; - } - - msec->flags = origflags; - } - - /* Fall back on the generic ELF find_nearest_line routine. */ - - return _bfd_elf_find_nearest_line (abfd, section, symbols, offset, - filename_ptr, functionname_ptr, - line_ptr); -} - -/* Structure used to pass information to alpha_elf_output_extsym. */ - -struct extsym_info -{ - bfd *abfd; - struct bfd_link_info *info; - struct ecoff_debug_info *debug; - const struct ecoff_debug_swap *swap; - bfd_boolean failed; -}; - -static bfd_boolean -elf64_alpha_output_extsym (struct alpha_elf_link_hash_entry *h, void * data) -{ - struct extsym_info *einfo = (struct extsym_info *) data; - bfd_boolean strip; - asection *sec, *output_section; - - if (h->root.indx == -2) - strip = FALSE; - else if ((h->root.def_dynamic - || h->root.ref_dynamic - || h->root.root.type == bfd_link_hash_new) - && !h->root.def_regular - && !h->root.ref_regular) - strip = TRUE; - else if (einfo->info->strip == strip_all - || (einfo->info->strip == strip_some - && bfd_hash_lookup (einfo->info->keep_hash, - h->root.root.root.string, - FALSE, FALSE) == NULL)) - strip = TRUE; - else - strip = FALSE; - - if (strip) - return TRUE; - - if (h->esym.ifd == -2) - { - h->esym.jmptbl = 0; - h->esym.cobol_main = 0; - h->esym.weakext = 0; - h->esym.reserved = 0; - h->esym.ifd = ifdNil; - h->esym.asym.value = 0; - h->esym.asym.st = stGlobal; - - if (h->root.root.type != bfd_link_hash_defined - && h->root.root.type != bfd_link_hash_defweak) - h->esym.asym.sc = scAbs; - else - { - const char *name; - - sec = h->root.root.u.def.section; - output_section = sec->output_section; - - /* When making a shared library and symbol h is the one from - the another shared library, OUTPUT_SECTION may be null. */ - if (output_section == NULL) - h->esym.asym.sc = scUndefined; - else - { - name = bfd_section_name (output_section->owner, output_section); - - if (strcmp (name, ".text") == 0) - h->esym.asym.sc = scText; - else if (strcmp (name, ".data") == 0) - h->esym.asym.sc = scData; - else if (strcmp (name, ".sdata") == 0) - h->esym.asym.sc = scSData; - else if (strcmp (name, ".rodata") == 0 - || strcmp (name, ".rdata") == 0) - h->esym.asym.sc = scRData; - else if (strcmp (name, ".bss") == 0) - h->esym.asym.sc = scBss; - else if (strcmp (name, ".sbss") == 0) - h->esym.asym.sc = scSBss; - else if (strcmp (name, ".init") == 0) - h->esym.asym.sc = scInit; - else if (strcmp (name, ".fini") == 0) - h->esym.asym.sc = scFini; - else - h->esym.asym.sc = scAbs; - } - } - - h->esym.asym.reserved = 0; - h->esym.asym.index = indexNil; - } - - if (h->root.root.type == bfd_link_hash_common) - h->esym.asym.value = h->root.root.u.c.size; - else if (h->root.root.type == bfd_link_hash_defined - || h->root.root.type == bfd_link_hash_defweak) - { - if (h->esym.asym.sc == scCommon) - h->esym.asym.sc = scBss; - else if (h->esym.asym.sc == scSCommon) - h->esym.asym.sc = scSBss; - - sec = h->root.root.u.def.section; - output_section = sec->output_section; - if (output_section != NULL) - h->esym.asym.value = (h->root.root.u.def.value - + sec->output_offset - + output_section->vma); - else - h->esym.asym.value = 0; - } - - if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, - h->root.root.root.string, - &h->esym)) - { - einfo->failed = TRUE; - return FALSE; - } - - return TRUE; -} - -/* Search for and possibly create a got entry. */ - -static struct alpha_elf_got_entry * -get_got_entry (bfd *abfd, struct alpha_elf_link_hash_entry *h, - unsigned long r_type, unsigned long r_symndx, - bfd_vma r_addend) -{ - struct alpha_elf_got_entry *gotent; - struct alpha_elf_got_entry **slot; - - if (h) - slot = &h->got_entries; - else - { - /* This is a local .got entry -- record for merge. */ - - struct alpha_elf_got_entry **local_got_entries; - - local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; - if (!local_got_entries) - { - bfd_size_type size; - Elf_Internal_Shdr *symtab_hdr; - - symtab_hdr = &elf_tdata(abfd)->symtab_hdr; - size = symtab_hdr->sh_info; - size *= sizeof (struct alpha_elf_got_entry *); - - local_got_entries - = (struct alpha_elf_got_entry **) bfd_zalloc (abfd, size); - if (!local_got_entries) - return NULL; - - alpha_elf_tdata (abfd)->local_got_entries = local_got_entries; - } - - slot = &local_got_entries[r_symndx]; - } - - for (gotent = *slot; gotent ; gotent = gotent->next) - if (gotent->gotobj == abfd - && gotent->reloc_type == r_type - && gotent->addend == r_addend) - break; - - if (!gotent) - { - int entry_size; - bfd_size_type amt; - - amt = sizeof (struct alpha_elf_got_entry); - gotent = (struct alpha_elf_got_entry *) bfd_alloc (abfd, amt); - if (!gotent) - return NULL; - - gotent->gotobj = abfd; - gotent->addend = r_addend; - gotent->got_offset = -1; - gotent->plt_offset = -1; - gotent->use_count = 1; - gotent->reloc_type = r_type; - gotent->reloc_done = 0; - gotent->reloc_xlated = 0; - - gotent->next = *slot; - *slot = gotent; - - entry_size = alpha_got_entry_size (r_type); - alpha_elf_tdata (abfd)->total_got_size += entry_size; - if (!h) - alpha_elf_tdata(abfd)->local_got_size += entry_size; - } - else - gotent->use_count += 1; - - return gotent; -} - -static bfd_boolean -elf64_alpha_want_plt (struct alpha_elf_link_hash_entry *ah) -{ - return ((ah->root.type == STT_FUNC - || ah->root.root.type == bfd_link_hash_undefweak - || ah->root.root.type == bfd_link_hash_undefined) - && (ah->flags & ALPHA_ELF_LINK_HASH_LU_PLT) != 0 - && (ah->flags & ~ALPHA_ELF_LINK_HASH_LU_PLT) == 0); -} - -/* Handle dynamic relocations when doing an Alpha ELF link. */ - -static bfd_boolean -elf64_alpha_check_relocs (bfd *abfd, struct bfd_link_info *info, - asection *sec, const Elf_Internal_Rela *relocs) -{ - bfd *dynobj; - asection *sreloc; - Elf_Internal_Shdr *symtab_hdr; - struct alpha_elf_link_hash_entry **sym_hashes; - const Elf_Internal_Rela *rel, *relend; - bfd_size_type amt; - - if (info->relocatable) - return TRUE; - - /* Don't do anything special with non-loaded, non-alloced sections. - In particular, any relocs in such sections should not affect GOT - and PLT reference counting (ie. we don't allow them to create GOT - or PLT entries), there's no possibility or desire to optimize TLS - relocs, and there's not much point in propagating relocs to shared - libs that the dynamic linker won't relocate. */ - if ((sec->flags & SEC_ALLOC) == 0) - return TRUE; - - BFD_ASSERT (is_alpha_elf (abfd)); - - dynobj = elf_hash_table (info)->dynobj; - if (dynobj == NULL) - elf_hash_table (info)->dynobj = dynobj = abfd; - - sreloc = NULL; - symtab_hdr = &elf_symtab_hdr (abfd); - sym_hashes = alpha_elf_sym_hashes (abfd); - - relend = relocs + sec->reloc_count; - for (rel = relocs; rel < relend; ++rel) - { - enum { - NEED_GOT = 1, - NEED_GOT_ENTRY = 2, - NEED_DYNREL = 4 - }; - - unsigned long r_symndx, r_type; - struct alpha_elf_link_hash_entry *h; - unsigned int gotent_flags; - bfd_boolean maybe_dynamic; - unsigned int need; - bfd_vma addend; - - r_symndx = ELF64_R_SYM (rel->r_info); - if (r_symndx < symtab_hdr->sh_info) - h = NULL; - else - { - h = sym_hashes[r_symndx - symtab_hdr->sh_info]; - - while (h->root.root.type == bfd_link_hash_indirect - || h->root.root.type == bfd_link_hash_warning) - h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; - - /* PR15323, ref flags aren't set for references in the same - object. */ - h->root.root.non_ir_ref = 1; - h->root.ref_regular = 1; - } - - /* We can only get preliminary data on whether a symbol is - locally or externally defined, as not all of the input files - have yet been processed. Do something with what we know, as - this may help reduce memory usage and processing time later. */ - maybe_dynamic = FALSE; - if (h && ((info->shared - && (!info->symbolic - || info->unresolved_syms_in_shared_libs == RM_IGNORE)) - || !h->root.def_regular - || h->root.root.type == bfd_link_hash_defweak)) - maybe_dynamic = TRUE; - - need = 0; - gotent_flags = 0; - r_type = ELF64_R_TYPE (rel->r_info); - addend = rel->r_addend; - - switch (r_type) - { - case R_ALPHA_LITERAL: - need = NEED_GOT | NEED_GOT_ENTRY; - - /* Remember how this literal is used from its LITUSEs. - This will be important when it comes to decide if we can - create a .plt entry for a function symbol. */ - while (++rel < relend && ELF64_R_TYPE (rel->r_info) == R_ALPHA_LITUSE) - if (rel->r_addend >= 1 && rel->r_addend <= 6) - gotent_flags |= 1 << rel->r_addend; - --rel; - - /* No LITUSEs -- presumably the address is used somehow. */ - if (gotent_flags == 0) - gotent_flags = ALPHA_ELF_LINK_HASH_LU_ADDR; - break; - - case R_ALPHA_GPDISP: - case R_ALPHA_GPREL16: - case R_ALPHA_GPREL32: - case R_ALPHA_GPRELHIGH: - case R_ALPHA_GPRELLOW: - case R_ALPHA_BRSGP: - need = NEED_GOT; - break; - - case R_ALPHA_REFLONG: - case R_ALPHA_REFQUAD: - if (info->shared || maybe_dynamic) - need = NEED_DYNREL; - break; - - case R_ALPHA_TLSLDM: - /* The symbol for a TLSLDM reloc is ignored. Collapse the - reloc to the STN_UNDEF (0) symbol so that they all match. */ - r_symndx = STN_UNDEF; - h = 0; - maybe_dynamic = FALSE; - /* FALLTHRU */ - - case R_ALPHA_TLSGD: - case R_ALPHA_GOTDTPREL: - need = NEED_GOT | NEED_GOT_ENTRY; - break; - - case R_ALPHA_GOTTPREL: - need = NEED_GOT | NEED_GOT_ENTRY; - gotent_flags = ALPHA_ELF_LINK_HASH_TLS_IE; - if (info->shared) - info->flags |= DF_STATIC_TLS; - break; - - case R_ALPHA_TPREL64: - if (info->shared && !info->pie) - { - info->flags |= DF_STATIC_TLS; - need = NEED_DYNREL; - } - else if (maybe_dynamic) - need = NEED_DYNREL; - break; - } - - if (need & NEED_GOT) - { - if (alpha_elf_tdata(abfd)->gotobj == NULL) - { - if (!elf64_alpha_create_got_section (abfd, info)) - return FALSE; - } - } - - if (need & NEED_GOT_ENTRY) - { - struct alpha_elf_got_entry *gotent; - - gotent = get_got_entry (abfd, h, r_type, r_symndx, addend); - if (!gotent) - return FALSE; - - if (gotent_flags) - { - gotent->flags |= gotent_flags; - if (h) - { - gotent_flags |= h->flags; - h->flags = gotent_flags; - - /* Make a guess as to whether a .plt entry is needed. */ - /* ??? It appears that we won't make it into - adjust_dynamic_symbol for symbols that remain - totally undefined. Copying this check here means - we can create a plt entry for them too. */ - h->root.needs_plt - = (maybe_dynamic && elf64_alpha_want_plt (h)); - } - } - } - - if (need & NEED_DYNREL) - { - /* We need to create the section here now whether we eventually - use it or not so that it gets mapped to an output section by - the linker. If not used, we'll kill it in size_dynamic_sections. */ - if (sreloc == NULL) - { - sreloc = _bfd_elf_make_dynamic_reloc_section - (sec, dynobj, 3, abfd, /*rela?*/ TRUE); - - if (sreloc == NULL) - return FALSE; - } - - if (h) - { - /* Since we havn't seen all of the input symbols yet, we - don't know whether we'll actually need a dynamic relocation - entry for this reloc. So make a record of it. Once we - find out if this thing needs dynamic relocation we'll - expand the relocation sections by the appropriate amount. */ - - struct alpha_elf_reloc_entry *rent; - - for (rent = h->reloc_entries; rent; rent = rent->next) - if (rent->rtype == r_type && rent->srel == sreloc) - break; - - if (!rent) - { - amt = sizeof (struct alpha_elf_reloc_entry); - rent = (struct alpha_elf_reloc_entry *) bfd_alloc (abfd, amt); - if (!rent) - return FALSE; - - rent->srel = sreloc; - rent->rtype = r_type; - rent->count = 1; - rent->reltext = (sec->flags & SEC_READONLY) != 0; - - rent->next = h->reloc_entries; - h->reloc_entries = rent; - } - else - rent->count++; - } - else if (info->shared) - { - /* If this is a shared library, and the section is to be - loaded into memory, we need a RELATIVE reloc. */ - sreloc->size += sizeof (Elf64_External_Rela); - if (sec->flags & SEC_READONLY) - info->flags |= DF_TEXTREL; - } - } - } - - return TRUE; -} - -/* Return the section that should be marked against GC for a given - relocation. */ - -static asection * -elf64_alpha_gc_mark_hook (asection *sec, struct bfd_link_info *info, - Elf_Internal_Rela *rel, - struct elf_link_hash_entry *h, Elf_Internal_Sym *sym) -{ - /* These relocations don't really reference a symbol. Instead we store - extra data in their addend slot. Ignore the symbol. */ - switch (ELF64_R_TYPE (rel->r_info)) - { - case R_ALPHA_LITUSE: - case R_ALPHA_GPDISP: - case R_ALPHA_HINT: - return NULL; - } - - return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); -} - -/* Update the got entry reference counts for the section being removed. */ - -static bfd_boolean -elf64_alpha_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, - asection *sec, const Elf_Internal_Rela *relocs) -{ - Elf_Internal_Shdr *symtab_hdr; - struct alpha_elf_link_hash_entry **sym_hashes; - const Elf_Internal_Rela *rel, *relend; - - if (info->relocatable) - return TRUE; - - symtab_hdr = &elf_symtab_hdr (abfd); - sym_hashes = alpha_elf_sym_hashes (abfd); - - relend = relocs + sec->reloc_count; - for (rel = relocs; rel < relend; rel++) - { - unsigned long r_symndx, r_type; - struct alpha_elf_link_hash_entry *h = NULL; - struct alpha_elf_got_entry *gotent; - - r_symndx = ELF64_R_SYM (rel->r_info); - if (r_symndx >= symtab_hdr->sh_info) - { - h = sym_hashes[r_symndx - symtab_hdr->sh_info]; - while (h->root.root.type == bfd_link_hash_indirect - || h->root.root.type == bfd_link_hash_warning) - h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; - } - - r_type = ELF64_R_TYPE (rel->r_info); - switch (r_type) - { - case R_ALPHA_LITERAL: - /* ??? Ignore re-computation of gotent_flags. We're not - carrying a use-count for each bit in that mask. */ - - case R_ALPHA_TLSGD: - case R_ALPHA_GOTDTPREL: - case R_ALPHA_GOTTPREL: - /* Fetch the got entry from the tables. */ - gotent = get_got_entry (abfd, h, r_type, r_symndx, rel->r_addend); - - /* The got entry *must* exist, since we should have created it - before during check_relocs. Also note that get_got_entry - assumed this was going to be another use, and so incremented - the use count again. Thus the use count must be at least the - one real use and the "use" we just added. */ - if (gotent == NULL || gotent->use_count < 2) - { - abort (); - return FALSE; - } - gotent->use_count -= 2; - break; - - default: - break; - } - } - - return TRUE; -} - -/* Adjust a symbol defined by a dynamic object and referenced by a - regular object. The current definition is in some section of the - dynamic object, but we're not including those sections. We have to - change the definition to something the rest of the link can - understand. */ - -static bfd_boolean -elf64_alpha_adjust_dynamic_symbol (struct bfd_link_info *info, - struct elf_link_hash_entry *h) -{ - bfd *dynobj; - asection *s; - struct alpha_elf_link_hash_entry *ah; - - dynobj = elf_hash_table(info)->dynobj; - ah = (struct alpha_elf_link_hash_entry *)h; - - /* Now that we've seen all of the input symbols, finalize our decision - about whether this symbol should get a .plt entry. Irritatingly, it - is common for folk to leave undefined symbols in shared libraries, - and they still expect lazy binding; accept undefined symbols in lieu - of STT_FUNC. */ - if (alpha_elf_dynamic_symbol_p (h, info) && elf64_alpha_want_plt (ah)) - { - h->needs_plt = TRUE; - - s = bfd_get_linker_section (dynobj, ".plt"); - if (!s && !elf64_alpha_create_dynamic_sections (dynobj, info)) - return FALSE; - - /* We need one plt entry per got subsection. Delay allocation of - the actual plt entries until size_plt_section, called from - size_dynamic_sections or during relaxation. */ - - return TRUE; - } - else - h->needs_plt = FALSE; - - /* If this is a weak symbol, and there is a real definition, the - processor independent code will have arranged for us to see the - real definition first, and we can just use the same value. */ - if (h->u.weakdef != NULL) - { - BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined - || h->u.weakdef->root.type == bfd_link_hash_defweak); - h->root.u.def.section = h->u.weakdef->root.u.def.section; - h->root.u.def.value = h->u.weakdef->root.u.def.value; - return TRUE; - } - - /* This is a reference to a symbol defined by a dynamic object which - is not a function. The Alpha, since it uses .got entries for all - symbols even in regular objects, does not need the hackery of a - .dynbss section and COPY dynamic relocations. */ - - return TRUE; -} - -/* Record STO_ALPHA_NOPV and STO_ALPHA_STD_GPLOAD. */ - -static void -elf64_alpha_merge_symbol_attribute (struct elf_link_hash_entry *h, - const Elf_Internal_Sym *isym, - bfd_boolean definition, - bfd_boolean dynamic) -{ - if (!dynamic && definition) - h->other = ((h->other & ELF_ST_VISIBILITY (-1)) - | (isym->st_other & ~ELF_ST_VISIBILITY (-1))); -} - -/* Symbol versioning can create new symbols, and make our old symbols - indirect to the new ones. Consolidate the got and reloc information - in these situations. */ - -static void -elf64_alpha_copy_indirect_symbol (struct bfd_link_info *info, - struct elf_link_hash_entry *dir, - struct elf_link_hash_entry *ind) -{ - struct alpha_elf_link_hash_entry *hi - = (struct alpha_elf_link_hash_entry *) ind; - struct alpha_elf_link_hash_entry *hs - = (struct alpha_elf_link_hash_entry *) dir; - - /* Do the merging in the superclass. */ - _bfd_elf_link_hash_copy_indirect(info, dir, ind); - - /* Merge the flags. Whee. */ - hs->flags |= hi->flags; - - /* ??? It's unclear to me what's really supposed to happen when - "merging" defweak and defined symbols, given that we don't - actually throw away the defweak. This more-or-less copies - the logic related to got and plt entries in the superclass. */ - if (ind->root.type != bfd_link_hash_indirect) - return; - - /* Merge the .got entries. Cannibalize the old symbol's list in - doing so, since we don't need it anymore. */ - - if (hs->got_entries == NULL) - hs->got_entries = hi->got_entries; - else - { - struct alpha_elf_got_entry *gi, *gs, *gin, *gsh; - - gsh = hs->got_entries; - for (gi = hi->got_entries; gi ; gi = gin) - { - gin = gi->next; - for (gs = gsh; gs ; gs = gs->next) - if (gi->gotobj == gs->gotobj - && gi->reloc_type == gs->reloc_type - && gi->addend == gs->addend) - { - gi->use_count += gs->use_count; - goto got_found; - } - gi->next = hs->got_entries; - hs->got_entries = gi; - got_found:; - } - } - hi->got_entries = NULL; - - /* And similar for the reloc entries. */ - - if (hs->reloc_entries == NULL) - hs->reloc_entries = hi->reloc_entries; - else - { - struct alpha_elf_reloc_entry *ri, *rs, *rin, *rsh; - - rsh = hs->reloc_entries; - for (ri = hi->reloc_entries; ri ; ri = rin) - { - rin = ri->next; - for (rs = rsh; rs ; rs = rs->next) - if (ri->rtype == rs->rtype && ri->srel == rs->srel) - { - rs->count += ri->count; - goto found_reloc; - } - ri->next = hs->reloc_entries; - hs->reloc_entries = ri; - found_reloc:; - } - } - hi->reloc_entries = NULL; -} - -/* Is it possible to merge two object file's .got tables? */ - -static bfd_boolean -elf64_alpha_can_merge_gots (bfd *a, bfd *b) -{ - int total = alpha_elf_tdata (a)->total_got_size; - bfd *bsub; - - /* Trivial quick fallout test. */ - if (total + alpha_elf_tdata (b)->total_got_size <= MAX_GOT_SIZE) - return TRUE; - - /* By their nature, local .got entries cannot be merged. */ - if ((total += alpha_elf_tdata (b)->local_got_size) > MAX_GOT_SIZE) - return FALSE; - - /* Failing the common trivial comparison, we must effectively - perform the merge. Not actually performing the merge means that - we don't have to store undo information in case we fail. */ - for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) - { - struct alpha_elf_link_hash_entry **hashes = alpha_elf_sym_hashes (bsub); - Elf_Internal_Shdr *symtab_hdr = &elf_tdata (bsub)->symtab_hdr; - int i, n; - - n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; - for (i = 0; i < n; ++i) - { - struct alpha_elf_got_entry *ae, *be; - struct alpha_elf_link_hash_entry *h; - - h = hashes[i]; - while (h->root.root.type == bfd_link_hash_indirect - || h->root.root.type == bfd_link_hash_warning) - h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; - - for (be = h->got_entries; be ; be = be->next) - { - if (be->use_count == 0) - continue; - if (be->gotobj != b) - continue; - - for (ae = h->got_entries; ae ; ae = ae->next) - if (ae->gotobj == a - && ae->reloc_type == be->reloc_type - && ae->addend == be->addend) - goto global_found; - - total += alpha_got_entry_size (be->reloc_type); - if (total > MAX_GOT_SIZE) - return FALSE; - global_found:; - } - } - } - - return TRUE; -} - -/* Actually merge two .got tables. */ - -static void -elf64_alpha_merge_gots (bfd *a, bfd *b) -{ - int total = alpha_elf_tdata (a)->total_got_size; - bfd *bsub; - - /* Remember local expansion. */ - { - int e = alpha_elf_tdata (b)->local_got_size; - total += e; - alpha_elf_tdata (a)->local_got_size += e; - } - - for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) - { - struct alpha_elf_got_entry **local_got_entries; - struct alpha_elf_link_hash_entry **hashes; - Elf_Internal_Shdr *symtab_hdr; - int i, n; - - /* Let the local .got entries know they are part of a new subsegment. */ - local_got_entries = alpha_elf_tdata (bsub)->local_got_entries; - if (local_got_entries) - { - n = elf_tdata (bsub)->symtab_hdr.sh_info; - for (i = 0; i < n; ++i) - { - struct alpha_elf_got_entry *ent; - for (ent = local_got_entries[i]; ent; ent = ent->next) - ent->gotobj = a; - } - } - - /* Merge the global .got entries. */ - hashes = alpha_elf_sym_hashes (bsub); - symtab_hdr = &elf_tdata (bsub)->symtab_hdr; - - n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; - for (i = 0; i < n; ++i) - { - struct alpha_elf_got_entry *ae, *be, **pbe, **start; - struct alpha_elf_link_hash_entry *h; - - h = hashes[i]; - while (h->root.root.type == bfd_link_hash_indirect - || h->root.root.type == bfd_link_hash_warning) - h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; - - pbe = start = &h->got_entries; - while ((be = *pbe) != NULL) - { - if (be->use_count == 0) - { - *pbe = be->next; - memset (be, 0xa5, sizeof (*be)); - goto kill; - } - if (be->gotobj != b) - goto next; - - for (ae = *start; ae ; ae = ae->next) - if (ae->gotobj == a - && ae->reloc_type == be->reloc_type - && ae->addend == be->addend) - { - ae->flags |= be->flags; - ae->use_count += be->use_count; - *pbe = be->next; - memset (be, 0xa5, sizeof (*be)); - goto kill; - } - be->gotobj = a; - total += alpha_got_entry_size (be->reloc_type); - - next:; - pbe = &be->next; - kill:; - } - } - - alpha_elf_tdata (bsub)->gotobj = a; - } - alpha_elf_tdata (a)->total_got_size = total; - - /* Merge the two in_got chains. */ - { - bfd *next; - - bsub = a; - while ((next = alpha_elf_tdata (bsub)->in_got_link_next) != NULL) - bsub = next; - - alpha_elf_tdata (bsub)->in_got_link_next = b; - } -} - -/* Calculate the offsets for the got entries. */ - -static bfd_boolean -elf64_alpha_calc_got_offsets_for_symbol (struct alpha_elf_link_hash_entry *h, - void * arg ATTRIBUTE_UNUSED) -{ - struct alpha_elf_got_entry *gotent; - - for (gotent = h->got_entries; gotent; gotent = gotent->next) - if (gotent->use_count > 0) - { - struct alpha_elf_obj_tdata *td; - bfd_size_type *plge; - - td = alpha_elf_tdata (gotent->gotobj); - plge = &td->got->size; - gotent->got_offset = *plge; - *plge += alpha_got_entry_size (gotent->reloc_type); - } - - return TRUE; -} - -static void -elf64_alpha_calc_got_offsets (struct bfd_link_info *info) -{ - bfd *i, *got_list; - struct alpha_elf_link_hash_table * htab; - - htab = alpha_elf_hash_table (info); - if (htab == NULL) - return; - got_list = htab->got_list; - - /* First, zero out the .got sizes, as we may be recalculating the - .got after optimizing it. */ - for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) - alpha_elf_tdata(i)->got->size = 0; - - /* Next, fill in the offsets for all the global entries. */ - alpha_elf_link_hash_traverse (htab, - elf64_alpha_calc_got_offsets_for_symbol, - NULL); - - /* Finally, fill in the offsets for the local entries. */ - for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) - { - bfd_size_type got_offset = alpha_elf_tdata(i)->got->size; - bfd *j; - - for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) - { - struct alpha_elf_got_entry **local_got_entries, *gotent; - int k, n; - - local_got_entries = alpha_elf_tdata(j)->local_got_entries; - if (!local_got_entries) - continue; - - for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) - for (gotent = local_got_entries[k]; gotent; gotent = gotent->next) - if (gotent->use_count > 0) - { - gotent->got_offset = got_offset; - got_offset += alpha_got_entry_size (gotent->reloc_type); - } - } - - alpha_elf_tdata(i)->got->size = got_offset; - } -} - -/* Constructs the gots. */ - -static bfd_boolean -elf64_alpha_size_got_sections (struct bfd_link_info *info) -{ - bfd *i, *got_list, *cur_got_obj = NULL; - struct alpha_elf_link_hash_table * htab; - - htab = alpha_elf_hash_table (info); - if (htab == NULL) - return FALSE; - got_list = htab->got_list; - - /* On the first time through, pretend we have an existing got list - consisting of all of the input files. */ - if (got_list == NULL) - { - for (i = info->input_bfds; i ; i = i->link_next) - { - bfd *this_got; - - if (! is_alpha_elf (i)) - continue; - - this_got = alpha_elf_tdata (i)->gotobj; - if (this_got == NULL) - continue; - - /* We are assuming no merging has yet occurred. */ - BFD_ASSERT (this_got == i); - - if (alpha_elf_tdata (this_got)->total_got_size > MAX_GOT_SIZE) - { - /* Yikes! A single object file has too many entries. */ - (*_bfd_error_handler) - (_("%B: .got subsegment exceeds 64K (size %d)"), - i, alpha_elf_tdata (this_got)->total_got_size); - return FALSE; - } - - if (got_list == NULL) - got_list = this_got; - else - alpha_elf_tdata(cur_got_obj)->got_link_next = this_got; - cur_got_obj = this_got; - } - - /* Strange degenerate case of no got references. */ - if (got_list == NULL) - return TRUE; - - htab->got_list = got_list; - } - - cur_got_obj = got_list; - if (cur_got_obj == NULL) - return FALSE; - - i = alpha_elf_tdata(cur_got_obj)->got_link_next; - while (i != NULL) - { - if (elf64_alpha_can_merge_gots (cur_got_obj, i)) - { - elf64_alpha_merge_gots (cur_got_obj, i); - - alpha_elf_tdata(i)->got->size = 0; - i = alpha_elf_tdata(i)->got_link_next; - alpha_elf_tdata(cur_got_obj)->got_link_next = i; - } - else - { - cur_got_obj = i; - i = alpha_elf_tdata(i)->got_link_next; - } - } - - /* Once the gots have been merged, fill in the got offsets for - everything therein. */ - elf64_alpha_calc_got_offsets (info); - - return TRUE; -} - -static bfd_boolean -elf64_alpha_size_plt_section_1 (struct alpha_elf_link_hash_entry *h, - void * data) -{ - asection *splt = (asection *) data; - struct alpha_elf_got_entry *gotent; - bfd_boolean saw_one = FALSE; - - /* If we didn't need an entry before, we still don't. */ - if (!h->root.needs_plt) - return TRUE; - - /* For each LITERAL got entry still in use, allocate a plt entry. */ - for (gotent = h->got_entries; gotent ; gotent = gotent->next) - if (gotent->reloc_type == R_ALPHA_LITERAL - && gotent->use_count > 0) - { - if (splt->size == 0) - splt->size = PLT_HEADER_SIZE; - gotent->plt_offset = splt->size; - splt->size += PLT_ENTRY_SIZE; - saw_one = TRUE; - } - - /* If there weren't any, there's no longer a need for the PLT entry. */ - if (!saw_one) - h->root.needs_plt = FALSE; - - return TRUE; -} - -/* Called from relax_section to rebuild the PLT in light of potential changes - in the function's status. */ - -static void -elf64_alpha_size_plt_section (struct bfd_link_info *info) -{ - asection *splt, *spltrel, *sgotplt; - unsigned long entries; - bfd *dynobj; - struct alpha_elf_link_hash_table * htab; - - htab = alpha_elf_hash_table (info); - if (htab == NULL) - return; - - dynobj = elf_hash_table(info)->dynobj; - splt = bfd_get_linker_section (dynobj, ".plt"); - if (splt == NULL) - return; - - splt->size = 0; - - alpha_elf_link_hash_traverse (htab, - elf64_alpha_size_plt_section_1, splt); - - /* Every plt entry requires a JMP_SLOT relocation. */ - spltrel = bfd_get_linker_section (dynobj, ".rela.plt"); - entries = 0; - if (splt->size) - { - if (elf64_alpha_use_secureplt) - entries = (splt->size - NEW_PLT_HEADER_SIZE) / NEW_PLT_ENTRY_SIZE; - else - entries = (splt->size - OLD_PLT_HEADER_SIZE) / OLD_PLT_ENTRY_SIZE; - } - spltrel->size = entries * sizeof (Elf64_External_Rela); - - /* When using the secureplt, we need two words somewhere in the data - segment for the dynamic linker to tell us where to go. This is the - entire contents of the .got.plt section. */ - if (elf64_alpha_use_secureplt) - { - sgotplt = bfd_get_linker_section (dynobj, ".got.plt"); - sgotplt->size = entries ? 16 : 0; - } -} - -static bfd_boolean -elf64_alpha_always_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED, - struct bfd_link_info *info) -{ - bfd *i; - struct alpha_elf_link_hash_table * htab; - - if (info->relocatable) - return TRUE; - - htab = alpha_elf_hash_table (info); - if (htab == NULL) - return FALSE; - - if (!elf64_alpha_size_got_sections (info)) - return FALSE; - - /* Allocate space for all of the .got subsections. */ - i = htab->got_list; - for ( ; i ; i = alpha_elf_tdata(i)->got_link_next) - { - asection *s = alpha_elf_tdata(i)->got; - if (s->size > 0) - { - s->contents = (bfd_byte *) bfd_zalloc (i, s->size); - if (s->contents == NULL) - return FALSE; - } - } - - return TRUE; -} - -/* The number of dynamic relocations required by a static relocation. */ - -static int -alpha_dynamic_entries_for_reloc (int r_type, int dynamic, int shared, int pie) -{ - switch (r_type) - { - /* May appear in GOT entries. */ - case R_ALPHA_TLSGD: - return (dynamic ? 2 : shared ? 1 : 0); - case R_ALPHA_TLSLDM: - return shared; - case R_ALPHA_LITERAL: - return dynamic || shared; - case R_ALPHA_GOTTPREL: - return dynamic || (shared && !pie); - case R_ALPHA_GOTDTPREL: - return dynamic; - - /* May appear in data sections. */ - case R_ALPHA_REFLONG: - case R_ALPHA_REFQUAD: - return dynamic || shared; - case R_ALPHA_TPREL64: - return dynamic || (shared && !pie); - - /* Everything else is illegal. We'll issue an error during - relocate_section. */ - default: - return 0; - } -} - -/* Work out the sizes of the dynamic relocation entries. */ - -static bfd_boolean -elf64_alpha_calc_dynrel_sizes (struct alpha_elf_link_hash_entry *h, - struct bfd_link_info *info) -{ - bfd_boolean dynamic; - struct alpha_elf_reloc_entry *relent; - unsigned long entries; - - /* If the symbol was defined as a common symbol in a regular object - file, and there was no definition in any dynamic object, then the - linker will have allocated space for the symbol in a common - section but the ELF_LINK_HASH_DEF_REGULAR flag will not have been - set. This is done for dynamic symbols in - elf_adjust_dynamic_symbol but this is not done for non-dynamic - symbols, somehow. */ - if (!h->root.def_regular - && h->root.ref_regular - && !h->root.def_dynamic - && (h->root.root.type == bfd_link_hash_defined - || h->root.root.type == bfd_link_hash_defweak) - && !(h->root.root.u.def.section->owner->flags & DYNAMIC)) - h->root.def_regular = 1; - - /* If the symbol is dynamic, we'll need all the relocations in their - natural form. If this is a shared object, and it has been forced - local, we'll need the same number of RELATIVE relocations. */ - dynamic = alpha_elf_dynamic_symbol_p (&h->root, info); - - /* If the symbol is a hidden undefined weak, then we never have any - relocations. Avoid the loop which may want to add RELATIVE relocs - based on info->shared. */ - if (h->root.root.type == bfd_link_hash_undefweak && !dynamic) - return TRUE; - - for (relent = h->reloc_entries; relent; relent = relent->next) - { - entries = alpha_dynamic_entries_for_reloc (relent->rtype, dynamic, - info->shared, info->pie); - if (entries) - { - relent->srel->size += - entries * sizeof (Elf64_External_Rela) * relent->count; - if (relent->reltext) - info->flags |= DT_TEXTREL; - } - } - - return TRUE; -} - -/* Subroutine of elf64_alpha_size_rela_got_section for doing the - global symbols. */ - -static bfd_boolean -elf64_alpha_size_rela_got_1 (struct alpha_elf_link_hash_entry *h, - struct bfd_link_info *info) -{ - bfd_boolean dynamic; - struct alpha_elf_got_entry *gotent; - unsigned long entries; - - /* If we're using a plt for this symbol, then all of its relocations - for its got entries go into .rela.plt. */ - if (h->root.needs_plt) - return TRUE; - - /* If the symbol is dynamic, we'll need all the relocations in their - natural form. If this is a shared object, and it has been forced - local, we'll need the same number of RELATIVE relocations. */ - dynamic = alpha_elf_dynamic_symbol_p (&h->root, info); - - /* If the symbol is a hidden undefined weak, then we never have any - relocations. Avoid the loop which may want to add RELATIVE relocs - based on info->shared. */ - if (h->root.root.type == bfd_link_hash_undefweak && !dynamic) - return TRUE; - - entries = 0; - for (gotent = h->got_entries; gotent ; gotent = gotent->next) - if (gotent->use_count > 0) - entries += alpha_dynamic_entries_for_reloc (gotent->reloc_type, dynamic, - info->shared, info->pie); - - if (entries > 0) - { - bfd *dynobj = elf_hash_table(info)->dynobj; - asection *srel = bfd_get_linker_section (dynobj, ".rela.got"); - BFD_ASSERT (srel != NULL); - srel->size += sizeof (Elf64_External_Rela) * entries; - } - - return TRUE; -} - -/* Set the sizes of the dynamic relocation sections. */ - -static void -elf64_alpha_size_rela_got_section (struct bfd_link_info *info) -{ - unsigned long entries; - bfd *i, *dynobj; - asection *srel; - struct alpha_elf_link_hash_table * htab; - - htab = alpha_elf_hash_table (info); - if (htab == NULL) - return; - - /* Shared libraries often require RELATIVE relocs, and some relocs - require attention for the main application as well. */ - - entries = 0; - for (i = htab->got_list; - i ; i = alpha_elf_tdata(i)->got_link_next) - { - bfd *j; - - for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) - { - struct alpha_elf_got_entry **local_got_entries, *gotent; - int k, n; - - local_got_entries = alpha_elf_tdata(j)->local_got_entries; - if (!local_got_entries) - continue; - - for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) - for (gotent = local_got_entries[k]; - gotent ; gotent = gotent->next) - if (gotent->use_count > 0) - entries += (alpha_dynamic_entries_for_reloc - (gotent->reloc_type, 0, info->shared, info->pie)); - } - } - - dynobj = elf_hash_table(info)->dynobj; - srel = bfd_get_linker_section (dynobj, ".rela.got"); - if (!srel) - { - BFD_ASSERT (entries == 0); - return; - } - srel->size = sizeof (Elf64_External_Rela) * entries; - - /* Now do the non-local symbols. */ - alpha_elf_link_hash_traverse (htab, - elf64_alpha_size_rela_got_1, info); -} - -/* Set the sizes of the dynamic sections. */ - -static bfd_boolean -elf64_alpha_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, - struct bfd_link_info *info) -{ - bfd *dynobj; - asection *s; - bfd_boolean relplt; - struct alpha_elf_link_hash_table * htab; - - htab = alpha_elf_hash_table (info); - if (htab == NULL) - return FALSE; - - dynobj = elf_hash_table(info)->dynobj; - BFD_ASSERT(dynobj != NULL); - - if (elf_hash_table (info)->dynamic_sections_created) - { - /* Set the contents of the .interp section to the interpreter. */ - if (info->executable) - { - s = bfd_get_linker_section (dynobj, ".interp"); - BFD_ASSERT (s != NULL); - s->size = sizeof ELF_DYNAMIC_INTERPRETER; - s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; - } - - /* Now that we've seen all of the input files, we can decide which - symbols need dynamic relocation entries and which don't. We've - collected information in check_relocs that we can now apply to - size the dynamic relocation sections. */ - alpha_elf_link_hash_traverse (htab, - elf64_alpha_calc_dynrel_sizes, info); - - elf64_alpha_size_rela_got_section (info); - elf64_alpha_size_plt_section (info); - } - /* else we're not dynamic and by definition we don't need such things. */ - - /* The check_relocs and adjust_dynamic_symbol entry points have - determined the sizes of the various dynamic sections. Allocate - memory for them. */ - relplt = FALSE; - for (s = dynobj->sections; s != NULL; s = s->next) - { - const char *name; - - if (!(s->flags & SEC_LINKER_CREATED)) - continue; - - /* It's OK to base decisions on the section name, because none - of the dynobj section names depend upon the input files. */ - name = bfd_get_section_name (dynobj, s); - - if (CONST_STRNEQ (name, ".rela")) - { - if (s->size != 0) - { - if (strcmp (name, ".rela.plt") == 0) - relplt = TRUE; - - /* We use the reloc_count field as a counter if we need - to copy relocs into the output file. */ - s->reloc_count = 0; - } - } - else if (! CONST_STRNEQ (name, ".got") - && strcmp (name, ".plt") != 0 - && strcmp (name, ".dynbss") != 0) - { - /* It's not one of our dynamic sections, so don't allocate space. */ - continue; - } - - if (s->size == 0) - { - /* If we don't need this section, strip it from the output file. - This is to handle .rela.bss and .rela.plt. We must create it - in create_dynamic_sections, because it must be created before - the linker maps input sections to output sections. The - linker does that before adjust_dynamic_symbol is called, and - it is that function which decides whether anything needs to - go into these sections. */ - if (!CONST_STRNEQ (name, ".got")) - s->flags |= SEC_EXCLUDE; - } - else if ((s->flags & SEC_HAS_CONTENTS) != 0) - { - /* Allocate memory for the section contents. */ - s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); - if (s->contents == NULL) - return FALSE; - } - } - - if (elf_hash_table (info)->dynamic_sections_created) - { - /* Add some entries to the .dynamic section. We fill in the - values later, in elf64_alpha_finish_dynamic_sections, but we - must add the entries now so that we get the correct size for - the .dynamic section. The DT_DEBUG entry is filled in by the - dynamic linker and used by the debugger. */ -#define add_dynamic_entry(TAG, VAL) \ - _bfd_elf_add_dynamic_entry (info, TAG, VAL) - - if (info->executable) - { - if (!add_dynamic_entry (DT_DEBUG, 0)) - return FALSE; - } - - if (relplt) - { - if (!add_dynamic_entry (DT_PLTGOT, 0) - || !add_dynamic_entry (DT_PLTRELSZ, 0) - || !add_dynamic_entry (DT_PLTREL, DT_RELA) - || !add_dynamic_entry (DT_JMPREL, 0)) - return FALSE; - - if (elf64_alpha_use_secureplt - && !add_dynamic_entry (DT_ALPHA_PLTRO, 1)) - return FALSE; - } - - if (!add_dynamic_entry (DT_RELA, 0) - || !add_dynamic_entry (DT_RELASZ, 0) - || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) - return FALSE; - - if (info->flags & DF_TEXTREL) - { - if (!add_dynamic_entry (DT_TEXTREL, 0)) - return FALSE; - } - } -#undef add_dynamic_entry - - return TRUE; -} - -/* These functions do relaxation for Alpha ELF. - - Currently I'm only handling what I can do with existing compiler - and assembler support, which means no instructions are removed, - though some may be nopped. At this time GCC does not emit enough - information to do all of the relaxing that is possible. It will - take some not small amount of work for that to happen. - - There are a couple of interesting papers that I once read on this - subject, that I cannot find references to at the moment, that - related to Alpha in particular. They are by David Wall, then of - DEC WRL. */ - -struct alpha_relax_info -{ - bfd *abfd; - asection *sec; - bfd_byte *contents; - Elf_Internal_Shdr *symtab_hdr; - Elf_Internal_Rela *relocs, *relend; - struct bfd_link_info *link_info; - bfd_vma gp; - bfd *gotobj; - asection *tsec; - struct alpha_elf_link_hash_entry *h; - struct alpha_elf_got_entry **first_gotent; - struct alpha_elf_got_entry *gotent; - bfd_boolean changed_contents; - bfd_boolean changed_relocs; - unsigned char other; -}; - -static Elf_Internal_Rela * -elf64_alpha_find_reloc_at_ofs (Elf_Internal_Rela *rel, - Elf_Internal_Rela *relend, - bfd_vma offset, int type) -{ - while (rel < relend) - { - if (rel->r_offset == offset - && ELF64_R_TYPE (rel->r_info) == (unsigned int) type) - return rel; - ++rel; - } - return NULL; -} - -static bfd_boolean -elf64_alpha_relax_got_load (struct alpha_relax_info *info, bfd_vma symval, - Elf_Internal_Rela *irel, unsigned long r_type) -{ - unsigned int insn; - bfd_signed_vma disp; - - /* Get the instruction. */ - insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); - - if (insn >> 26 != OP_LDQ) - { - reloc_howto_type *howto = elf64_alpha_howto_table + r_type; - ((*_bfd_error_handler) - ("%B: %A+0x%lx: warning: %s relocation against unexpected insn", - info->abfd, info->sec, - (unsigned long) irel->r_offset, howto->name)); - return TRUE; - } - - /* Can't relax dynamic symbols. */ - if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info)) - return TRUE; - - /* Can't use local-exec relocations in shared libraries. */ - if (r_type == R_ALPHA_GOTTPREL - && (info->link_info->shared && !info->link_info->pie)) - return TRUE; - - if (r_type == R_ALPHA_LITERAL) - { - /* Look for nice constant addresses. This includes the not-uncommon - special case of 0 for undefweak symbols. */ - if ((info->h && info->h->root.root.type == bfd_link_hash_undefweak) - || (!info->link_info->shared - && (symval >= (bfd_vma)-0x8000 || symval < 0x8000))) - { - disp = 0; - insn = (OP_LDA << 26) | (insn & (31 << 21)) | (31 << 16); - insn |= (symval & 0xffff); - r_type = R_ALPHA_NONE; - } - else - { - disp = symval - info->gp; - insn = (OP_LDA << 26) | (insn & 0x03ff0000); - r_type = R_ALPHA_GPREL16; - } - } - else - { - bfd_vma dtp_base, tp_base; - - BFD_ASSERT (elf_hash_table (info->link_info)->tls_sec != NULL); - dtp_base = alpha_get_dtprel_base (info->link_info); - tp_base = alpha_get_tprel_base (info->link_info); - disp = symval - (r_type == R_ALPHA_GOTDTPREL ? dtp_base : tp_base); - - insn = (OP_LDA << 26) | (insn & (31 << 21)) | (31 << 16); - - switch (r_type) - { - case R_ALPHA_GOTDTPREL: - r_type = R_ALPHA_DTPREL16; - break; - case R_ALPHA_GOTTPREL: - r_type = R_ALPHA_TPREL16; - break; - default: - BFD_ASSERT (0); - return FALSE; - } - } - - if (disp < -0x8000 || disp >= 0x8000) - return TRUE; - - bfd_put_32 (info->abfd, (bfd_vma) insn, info->contents + irel->r_offset); - info->changed_contents = TRUE; - - /* Reduce the use count on this got entry by one, possibly - eliminating it. */ - if (--info->gotent->use_count == 0) - { - int sz = alpha_got_entry_size (r_type); - alpha_elf_tdata (info->gotobj)->total_got_size -= sz; - if (!info->h) - alpha_elf_tdata (info->gotobj)->local_got_size -= sz; - } - - /* Smash the existing GOT relocation for its 16-bit immediate pair. */ - irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), r_type); - info->changed_relocs = TRUE; - - /* ??? Search forward through this basic block looking for insns - that use the target register. Stop after an insn modifying the - register is seen, or after a branch or call. - - Any such memory load insn may be substituted by a load directly - off the GP. This allows the memory load insn to be issued before - the calculated GP register would otherwise be ready. - - Any such jsr insn can be replaced by a bsr if it is in range. - - This would mean that we'd have to _add_ relocations, the pain of - which gives one pause. */ - - return TRUE; -} - -static bfd_vma -elf64_alpha_relax_opt_call (struct alpha_relax_info *info, bfd_vma symval) -{ - /* If the function has the same gp, and we can identify that the - function does not use its function pointer, we can eliminate the - address load. */ - - /* If the symbol is marked NOPV, we are being told the function never - needs its procedure value. */ - if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_NOPV) - return symval; - - /* If the symbol is marked STD_GP, we are being told the function does - a normal ldgp in the first two words. */ - else if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_STD_GPLOAD) - ; - - /* Otherwise, we may be able to identify a GP load in the first two - words, which we can then skip. */ - else - { - Elf_Internal_Rela *tsec_relocs, *tsec_relend, *tsec_free, *gpdisp; - bfd_vma ofs; - - /* Load the relocations from the section that the target symbol is in. */ - if (info->sec == info->tsec) - { - tsec_relocs = info->relocs; - tsec_relend = info->relend; - tsec_free = NULL; - } - else - { - tsec_relocs = (_bfd_elf_link_read_relocs - (info->abfd, info->tsec, NULL, - (Elf_Internal_Rela *) NULL, - info->link_info->keep_memory)); - if (tsec_relocs == NULL) - return 0; - tsec_relend = tsec_relocs + info->tsec->reloc_count; - tsec_free = (info->link_info->keep_memory ? NULL : tsec_relocs); - } - - /* Recover the symbol's offset within the section. */ - ofs = (symval - info->tsec->output_section->vma - - info->tsec->output_offset); - - /* Look for a GPDISP reloc. */ - gpdisp = (elf64_alpha_find_reloc_at_ofs - (tsec_relocs, tsec_relend, ofs, R_ALPHA_GPDISP)); - - if (!gpdisp || gpdisp->r_addend != 4) - { - if (tsec_free) - free (tsec_free); - return 0; - } - if (tsec_free) - free (tsec_free); - } - - /* We've now determined that we can skip an initial gp load. Verify - that the call and the target use the same gp. */ - if (info->link_info->output_bfd->xvec != info->tsec->owner->xvec - || info->gotobj != alpha_elf_tdata (info->tsec->owner)->gotobj) - return 0; - - return symval + 8; -} - -static bfd_boolean -elf64_alpha_relax_with_lituse (struct alpha_relax_info *info, - bfd_vma symval, Elf_Internal_Rela *irel) -{ - Elf_Internal_Rela *urel, *irelend = info->relend; - int flags, count, i; - bfd_signed_vma disp; - bfd_boolean fits16; - bfd_boolean fits32; - bfd_boolean lit_reused = FALSE; - bfd_boolean all_optimized = TRUE; - unsigned int lit_insn; - - lit_insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); - if (lit_insn >> 26 != OP_LDQ) - { - ((*_bfd_error_handler) - ("%B: %A+0x%lx: warning: LITERAL relocation against unexpected insn", - info->abfd, info->sec, - (unsigned long) irel->r_offset)); - return TRUE; - } - - /* Can't relax dynamic symbols. */ - if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info)) - return TRUE; - - /* Summarize how this particular LITERAL is used. */ - for (urel = irel+1, flags = count = 0; urel < irelend; ++urel, ++count) - { - if (ELF64_R_TYPE (urel->r_info) != R_ALPHA_LITUSE) - break; - if (urel->r_addend <= 6) - flags |= 1 << urel->r_addend; - } - - /* A little preparation for the loop... */ - disp = symval - info->gp; - - for (urel = irel+1, i = 0; i < count; ++i, ++urel) - { - unsigned int insn; - int insn_disp; - bfd_signed_vma xdisp; - - insn = bfd_get_32 (info->abfd, info->contents + urel->r_offset); - - switch (urel->r_addend) - { - case LITUSE_ALPHA_ADDR: - default: - /* This type is really just a placeholder to note that all - uses cannot be optimized, but to still allow some. */ - all_optimized = FALSE; - break; - - case LITUSE_ALPHA_BASE: - /* We can always optimize 16-bit displacements. */ - - /* Extract the displacement from the instruction, sign-extending - it if necessary, then test whether it is within 16 or 32 bits - displacement from GP. */ - insn_disp = ((insn & 0xffff) ^ 0x8000) - 0x8000; - - xdisp = disp + insn_disp; - fits16 = (xdisp >= - (bfd_signed_vma) 0x8000 && xdisp < 0x8000); - fits32 = (xdisp >= - (bfd_signed_vma) 0x80000000 - && xdisp < 0x7fff8000); - - if (fits16) - { - /* Take the op code and dest from this insn, take the base - register from the literal insn. Leave the offset alone. */ - insn = (insn & 0xffe0ffff) | (lit_insn & 0x001f0000); - urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), - R_ALPHA_GPREL16); - urel->r_addend = irel->r_addend; - info->changed_relocs = TRUE; - - bfd_put_32 (info->abfd, (bfd_vma) insn, - info->contents + urel->r_offset); - info->changed_contents = TRUE; - } - - /* If all mem+byte, we can optimize 32-bit mem displacements. */ - else if (fits32 && !(flags & ~6)) - { - /* FIXME: sanity check that lit insn Ra is mem insn Rb. */ - - irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), - R_ALPHA_GPRELHIGH); - lit_insn = (OP_LDAH << 26) | (lit_insn & 0x03ff0000); - bfd_put_32 (info->abfd, (bfd_vma) lit_insn, - info->contents + irel->r_offset); - lit_reused = TRUE; - info->changed_contents = TRUE; - - urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), - R_ALPHA_GPRELLOW); - urel->r_addend = irel->r_addend; - info->changed_relocs = TRUE; - } - else - all_optimized = FALSE; - break; - - case LITUSE_ALPHA_BYTOFF: - /* We can always optimize byte instructions. */ - - /* FIXME: sanity check the insn for byte op. Check that the - literal dest reg is indeed Rb in the byte insn. */ - - insn &= ~ (unsigned) 0x001ff000; - insn |= ((symval & 7) << 13) | 0x1000; - - urel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); - urel->r_addend = 0; - info->changed_relocs = TRUE; - - bfd_put_32 (info->abfd, (bfd_vma) insn, - info->contents + urel->r_offset); - info->changed_contents = TRUE; - break; - - case LITUSE_ALPHA_JSR: - case LITUSE_ALPHA_TLSGD: - case LITUSE_ALPHA_TLSLDM: - case LITUSE_ALPHA_JSRDIRECT: - { - bfd_vma optdest, org; - bfd_signed_vma odisp; - - /* For undefined weak symbols, we're mostly interested in getting - rid of the got entry whenever possible, so optimize this to a - use of the zero register. */ - if (info->h && info->h->root.root.type == bfd_link_hash_undefweak) - { - insn |= 31 << 16; - bfd_put_32 (info->abfd, (bfd_vma) insn, - info->contents + urel->r_offset); - - info->changed_contents = TRUE; - break; - } - - /* If not zero, place to jump without needing pv. */ - optdest = elf64_alpha_relax_opt_call (info, symval); - org = (info->sec->output_section->vma - + info->sec->output_offset - + urel->r_offset + 4); - odisp = (optdest ? optdest : symval) - org; - - if (odisp >= -0x400000 && odisp < 0x400000) - { - Elf_Internal_Rela *xrel; - - /* Preserve branch prediction call stack when possible. */ - if ((insn & INSN_JSR_MASK) == INSN_JSR) - insn = (OP_BSR << 26) | (insn & 0x03e00000); - else - insn = (OP_BR << 26) | (insn & 0x03e00000); - - urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), - R_ALPHA_BRADDR); - urel->r_addend = irel->r_addend; - - if (optdest) - urel->r_addend += optdest - symval; - else - all_optimized = FALSE; - - bfd_put_32 (info->abfd, (bfd_vma) insn, - info->contents + urel->r_offset); - - /* Kill any HINT reloc that might exist for this insn. */ - xrel = (elf64_alpha_find_reloc_at_ofs - (info->relocs, info->relend, urel->r_offset, - R_ALPHA_HINT)); - if (xrel) - xrel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); - - info->changed_contents = TRUE; - info->changed_relocs = TRUE; - } - else - all_optimized = FALSE; - - /* Even if the target is not in range for a direct branch, - if we share a GP, we can eliminate the gp reload. */ - if (optdest) - { - Elf_Internal_Rela *gpdisp - = (elf64_alpha_find_reloc_at_ofs - (info->relocs, irelend, urel->r_offset + 4, - R_ALPHA_GPDISP)); - if (gpdisp) - { - bfd_byte *p_ldah = info->contents + gpdisp->r_offset; - bfd_byte *p_lda = p_ldah + gpdisp->r_addend; - unsigned int ldah = bfd_get_32 (info->abfd, p_ldah); - unsigned int lda = bfd_get_32 (info->abfd, p_lda); - - /* Verify that the instruction is "ldah $29,0($26)". - Consider a function that ends in a noreturn call, - and that the next function begins with an ldgp, - and that by accident there is no padding between. - In that case the insn would use $27 as the base. */ - if (ldah == 0x27ba0000 && lda == 0x23bd0000) - { - bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_ldah); - bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_lda); - - gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); - info->changed_contents = TRUE; - info->changed_relocs = TRUE; - } - } - } - } - break; - } - } - - /* If all cases were optimized, we can reduce the use count on this - got entry by one, possibly eliminating it. */ - if (all_optimized) - { - if (--info->gotent->use_count == 0) - { - int sz = alpha_got_entry_size (R_ALPHA_LITERAL); - alpha_elf_tdata (info->gotobj)->total_got_size -= sz; - if (!info->h) - alpha_elf_tdata (info->gotobj)->local_got_size -= sz; - } - - /* If the literal instruction is no longer needed (it may have been - reused. We can eliminate it. */ - /* ??? For now, I don't want to deal with compacting the section, - so just nop it out. */ - if (!lit_reused) - { - irel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); - info->changed_relocs = TRUE; - - bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, - info->contents + irel->r_offset); - info->changed_contents = TRUE; - } - - return TRUE; - } - else - return elf64_alpha_relax_got_load (info, symval, irel, R_ALPHA_LITERAL); -} - -static bfd_boolean -elf64_alpha_relax_tls_get_addr (struct alpha_relax_info *info, bfd_vma symval, - Elf_Internal_Rela *irel, bfd_boolean is_gd) -{ - bfd_byte *pos[5]; - unsigned int insn, tlsgd_reg; - Elf_Internal_Rela *gpdisp, *hint; - bfd_boolean dynamic, use_gottprel; - unsigned long new_symndx; - - dynamic = alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info); - - /* If a TLS symbol is accessed using IE at least once, there is no point - to use dynamic model for it. */ - if (is_gd && info->h && (info->h->flags & ALPHA_ELF_LINK_HASH_TLS_IE)) - ; - - /* If the symbol is local, and we've already committed to DF_STATIC_TLS, - then we might as well relax to IE. */ - else if (info->link_info->shared && !dynamic - && (info->link_info->flags & DF_STATIC_TLS)) - ; - - /* Otherwise we must be building an executable to do anything. */ - else if (info->link_info->shared) - return TRUE; - - /* The TLSGD/TLSLDM relocation must be followed by a LITERAL and - the matching LITUSE_TLS relocations. */ - if (irel + 2 >= info->relend) - return TRUE; - if (ELF64_R_TYPE (irel[1].r_info) != R_ALPHA_LITERAL - || ELF64_R_TYPE (irel[2].r_info) != R_ALPHA_LITUSE - || irel[2].r_addend != (is_gd ? LITUSE_ALPHA_TLSGD : LITUSE_ALPHA_TLSLDM)) - return TRUE; - - /* There must be a GPDISP relocation positioned immediately after the - LITUSE relocation. */ - gpdisp = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend, - irel[2].r_offset + 4, R_ALPHA_GPDISP); - if (!gpdisp) - return TRUE; - - pos[0] = info->contents + irel[0].r_offset; - pos[1] = info->contents + irel[1].r_offset; - pos[2] = info->contents + irel[2].r_offset; - pos[3] = info->contents + gpdisp->r_offset; - pos[4] = pos[3] + gpdisp->r_addend; - - /* Beware of the compiler hoisting part of the sequence out a loop - and adjusting the destination register for the TLSGD insn. If this - happens, there will be a move into $16 before the JSR insn, so only - transformations of the first insn pair should use this register. */ - tlsgd_reg = bfd_get_32 (info->abfd, pos[0]); - tlsgd_reg = (tlsgd_reg >> 21) & 31; - - /* Generally, the positions are not allowed to be out of order, lest the - modified insn sequence have different register lifetimes. We can make - an exception when pos 1 is adjacent to pos 0. */ - if (pos[1] + 4 == pos[0]) - { - bfd_byte *tmp = pos[0]; - pos[0] = pos[1]; - pos[1] = tmp; - } - if (pos[1] >= pos[2] || pos[2] >= pos[3]) - return TRUE; - - /* Reduce the use count on the LITERAL relocation. Do this before we - smash the symndx when we adjust the relocations below. */ - { - struct alpha_elf_got_entry *lit_gotent; - struct alpha_elf_link_hash_entry *lit_h; - unsigned long indx; - - BFD_ASSERT (ELF64_R_SYM (irel[1].r_info) >= info->symtab_hdr->sh_info); - indx = ELF64_R_SYM (irel[1].r_info) - info->symtab_hdr->sh_info; - lit_h = alpha_elf_sym_hashes (info->abfd)[indx]; - - while (lit_h->root.root.type == bfd_link_hash_indirect - || lit_h->root.root.type == bfd_link_hash_warning) - lit_h = (struct alpha_elf_link_hash_entry *) lit_h->root.root.u.i.link; - - for (lit_gotent = lit_h->got_entries; lit_gotent ; - lit_gotent = lit_gotent->next) - if (lit_gotent->gotobj == info->gotobj - && lit_gotent->reloc_type == R_ALPHA_LITERAL - && lit_gotent->addend == irel[1].r_addend) - break; - BFD_ASSERT (lit_gotent); - - if (--lit_gotent->use_count == 0) - { - int sz = alpha_got_entry_size (R_ALPHA_LITERAL); - alpha_elf_tdata (info->gotobj)->total_got_size -= sz; - } - } - - /* Change - - lda $16,x($gp) !tlsgd!1 - ldq $27,__tls_get_addr($gp) !literal!1 - jsr $26,($27),__tls_get_addr !lituse_tlsgd!1 - ldah $29,0($26) !gpdisp!2 - lda $29,0($29) !gpdisp!2 - to - ldq $16,x($gp) !gottprel - unop - call_pal rduniq - addq $16,$0,$0 - unop - or the first pair to - lda $16,x($gp) !tprel - unop - or - ldah $16,x($gp) !tprelhi - lda $16,x($16) !tprello - - as appropriate. */ - - use_gottprel = FALSE; - new_symndx = is_gd ? ELF64_R_SYM (irel->r_info) : STN_UNDEF; - - /* Some compilers warn about a Boolean-looking expression being - used in a switch. The explicit cast silences them. */ - switch ((int) (!dynamic && !info->link_info->shared)) - { - case 1: - { - bfd_vma tp_base; - bfd_signed_vma disp; - - BFD_ASSERT (elf_hash_table (info->link_info)->tls_sec != NULL); - tp_base = alpha_get_tprel_base (info->link_info); - disp = symval - tp_base; - - if (disp >= -0x8000 && disp < 0x8000) - { - insn = (OP_LDA << 26) | (tlsgd_reg << 21) | (31 << 16); - bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); - bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]); - - irel[0].r_offset = pos[0] - info->contents; - irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPREL16); - irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); - break; - } - else if (disp >= -(bfd_signed_vma) 0x80000000 - && disp < (bfd_signed_vma) 0x7fff8000 - && pos[0] + 4 == pos[1]) - { - insn = (OP_LDAH << 26) | (tlsgd_reg << 21) | (31 << 16); - bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); - insn = (OP_LDA << 26) | (tlsgd_reg << 21) | (tlsgd_reg << 16); - bfd_put_32 (info->abfd, (bfd_vma) insn, pos[1]); - - irel[0].r_offset = pos[0] - info->contents; - irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELHI); - irel[1].r_offset = pos[1] - info->contents; - irel[1].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELLO); - break; - } - } - /* FALLTHRU */ - - default: - use_gottprel = TRUE; - - insn = (OP_LDQ << 26) | (tlsgd_reg << 21) | (29 << 16); - bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); - bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]); - - irel[0].r_offset = pos[0] - info->contents; - irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_GOTTPREL); - irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); - break; - } - - bfd_put_32 (info->abfd, (bfd_vma) INSN_RDUNIQ, pos[2]); - - insn = INSN_ADDQ | (16 << 21) | (0 << 16) | (0 << 0); - bfd_put_32 (info->abfd, (bfd_vma) insn, pos[3]); - - bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[4]); - - irel[2].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); - gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); - - hint = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend, - irel[2].r_offset, R_ALPHA_HINT); - if (hint) - hint->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); - - info->changed_contents = TRUE; - info->changed_relocs = TRUE; - - /* Reduce the use count on the TLSGD/TLSLDM relocation. */ - if (--info->gotent->use_count == 0) - { - int sz = alpha_got_entry_size (info->gotent->reloc_type); - alpha_elf_tdata (info->gotobj)->total_got_size -= sz; - if (!info->h) - alpha_elf_tdata (info->gotobj)->local_got_size -= sz; - } - - /* If we've switched to a GOTTPREL relocation, increment the reference - count on that got entry. */ - if (use_gottprel) - { - struct alpha_elf_got_entry *tprel_gotent; - - for (tprel_gotent = *info->first_gotent; tprel_gotent ; - tprel_gotent = tprel_gotent->next) - if (tprel_gotent->gotobj == info->gotobj - && tprel_gotent->reloc_type == R_ALPHA_GOTTPREL - && tprel_gotent->addend == irel->r_addend) - break; - if (tprel_gotent) - tprel_gotent->use_count++; - else - { - if (info->gotent->use_count == 0) - tprel_gotent = info->gotent; - else - { - tprel_gotent = (struct alpha_elf_got_entry *) - bfd_alloc (info->abfd, sizeof (struct alpha_elf_got_entry)); - if (!tprel_gotent) - return FALSE; - - tprel_gotent->next = *info->first_gotent; - *info->first_gotent = tprel_gotent; - - tprel_gotent->gotobj = info->gotobj; - tprel_gotent->addend = irel->r_addend; - tprel_gotent->got_offset = -1; - tprel_gotent->reloc_done = 0; - tprel_gotent->reloc_xlated = 0; - } - - tprel_gotent->use_count = 1; - tprel_gotent->reloc_type = R_ALPHA_GOTTPREL; - } - } - - return TRUE; -} - -static bfd_boolean -elf64_alpha_relax_section (bfd *abfd, asection *sec, - struct bfd_link_info *link_info, bfd_boolean *again) -{ - Elf_Internal_Shdr *symtab_hdr; - Elf_Internal_Rela *internal_relocs; - Elf_Internal_Rela *irel, *irelend; - Elf_Internal_Sym *isymbuf = NULL; - struct alpha_elf_got_entry **local_got_entries; - struct alpha_relax_info info; - struct alpha_elf_link_hash_table * htab; - - htab = alpha_elf_hash_table (link_info); - if (htab == NULL) - return FALSE; - - /* There's nothing to change, yet. */ - *again = FALSE; - - if (link_info->relocatable - || ((sec->flags & (SEC_CODE | SEC_RELOC | SEC_ALLOC)) - != (SEC_CODE | SEC_RELOC | SEC_ALLOC)) - || sec->reloc_count == 0) - return TRUE; - - BFD_ASSERT (is_alpha_elf (abfd)); - - /* Make sure our GOT and PLT tables are up-to-date. */ - if (htab->relax_trip != link_info->relax_trip) - { - htab->relax_trip = link_info->relax_trip; - - /* This should never fail after the initial round, since the only - error is GOT overflow, and relaxation only shrinks the table. */ - if (!elf64_alpha_size_got_sections (link_info)) - abort (); - if (elf_hash_table (link_info)->dynamic_sections_created) - { - elf64_alpha_size_plt_section (link_info); - elf64_alpha_size_rela_got_section (link_info); - } - } - - symtab_hdr = &elf_symtab_hdr (abfd); - local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; - - /* Load the relocations for this section. */ - internal_relocs = (_bfd_elf_link_read_relocs - (abfd, sec, NULL, (Elf_Internal_Rela *) NULL, - link_info->keep_memory)); - if (internal_relocs == NULL) - return FALSE; - - memset(&info, 0, sizeof (info)); - info.abfd = abfd; - info.sec = sec; - info.link_info = link_info; - info.symtab_hdr = symtab_hdr; - info.relocs = internal_relocs; - info.relend = irelend = internal_relocs + sec->reloc_count; - - /* Find the GP for this object. Do not store the result back via - _bfd_set_gp_value, since this could change again before final. */ - info.gotobj = alpha_elf_tdata (abfd)->gotobj; - if (info.gotobj) - { - asection *sgot = alpha_elf_tdata (info.gotobj)->got; - info.gp = (sgot->output_section->vma - + sgot->output_offset - + 0x8000); - } - - /* Get the section contents. */ - if (elf_section_data (sec)->this_hdr.contents != NULL) - info.contents = elf_section_data (sec)->this_hdr.contents; - else - { - if (!bfd_malloc_and_get_section (abfd, sec, &info.contents)) - goto error_return; - } - - for (irel = internal_relocs; irel < irelend; irel++) - { - bfd_vma symval; - struct alpha_elf_got_entry *gotent; - unsigned long r_type = ELF64_R_TYPE (irel->r_info); - unsigned long r_symndx = ELF64_R_SYM (irel->r_info); - - /* Early exit for unhandled or unrelaxable relocations. */ - switch (r_type) - { - case R_ALPHA_LITERAL: - case R_ALPHA_GPRELHIGH: - case R_ALPHA_GPRELLOW: - case R_ALPHA_GOTDTPREL: - case R_ALPHA_GOTTPREL: - case R_ALPHA_TLSGD: - break; - - case R_ALPHA_TLSLDM: - /* The symbol for a TLSLDM reloc is ignored. Collapse the - reloc to the STN_UNDEF (0) symbol so that they all match. */ - r_symndx = STN_UNDEF; - break; - - default: - continue; - } - - /* Get the value of the symbol referred to by the reloc. */ - if (r_symndx < symtab_hdr->sh_info) - { - /* A local symbol. */ - Elf_Internal_Sym *isym; - - /* Read this BFD's local symbols. */ - if (isymbuf == NULL) - { - isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; - if (isymbuf == NULL) - isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, - symtab_hdr->sh_info, 0, - NULL, NULL, NULL); - if (isymbuf == NULL) - goto error_return; - } - - isym = isymbuf + r_symndx; - - /* Given the symbol for a TLSLDM reloc is ignored, this also - means forcing the symbol value to the tp base. */ - if (r_type == R_ALPHA_TLSLDM) - { - info.tsec = bfd_abs_section_ptr; - symval = alpha_get_tprel_base (info.link_info); - } - else - { - symval = isym->st_value; - if (isym->st_shndx == SHN_UNDEF) - continue; - else if (isym->st_shndx == SHN_ABS) - info.tsec = bfd_abs_section_ptr; - else if (isym->st_shndx == SHN_COMMON) - info.tsec = bfd_com_section_ptr; - else - info.tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); - } - - info.h = NULL; - info.other = isym->st_other; - if (local_got_entries) - info.first_gotent = &local_got_entries[r_symndx]; - else - { - info.first_gotent = &info.gotent; - info.gotent = NULL; - } - } - else - { - unsigned long indx; - struct alpha_elf_link_hash_entry *h; - - indx = r_symndx - symtab_hdr->sh_info; - h = alpha_elf_sym_hashes (abfd)[indx]; - BFD_ASSERT (h != NULL); - - while (h->root.root.type == bfd_link_hash_indirect - || h->root.root.type == bfd_link_hash_warning) - h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; - - /* If the symbol is undefined, we can't do anything with it. */ - if (h->root.root.type == bfd_link_hash_undefined) - continue; - - /* If the symbol isn't defined in the current module, - again we can't do anything. */ - if (h->root.root.type == bfd_link_hash_undefweak) - { - info.tsec = bfd_abs_section_ptr; - symval = 0; - } - else if (!h->root.def_regular) - { - /* Except for TLSGD relocs, which can sometimes be - relaxed to GOTTPREL relocs. */ - if (r_type != R_ALPHA_TLSGD) - continue; - info.tsec = bfd_abs_section_ptr; - symval = 0; - } - else - { - info.tsec = h->root.root.u.def.section; - symval = h->root.root.u.def.value; - } - - info.h = h; - info.other = h->root.other; - info.first_gotent = &h->got_entries; - } - - /* Search for the got entry to be used by this relocation. */ - for (gotent = *info.first_gotent; gotent ; gotent = gotent->next) - if (gotent->gotobj == info.gotobj - && gotent->reloc_type == r_type - && gotent->addend == irel->r_addend) - break; - info.gotent = gotent; - - symval += info.tsec->output_section->vma + info.tsec->output_offset; - symval += irel->r_addend; - - switch (r_type) - { - case R_ALPHA_LITERAL: - BFD_ASSERT(info.gotent != NULL); - - /* If there exist LITUSE relocations immediately following, this - opens up all sorts of interesting optimizations, because we - now know every location that this address load is used. */ - if (irel+1 < irelend - && ELF64_R_TYPE (irel[1].r_info) == R_ALPHA_LITUSE) - { - if (!elf64_alpha_relax_with_lituse (&info, symval, irel)) - goto error_return; - } - else - { - if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type)) - goto error_return; - } - break; - - case R_ALPHA_GOTDTPREL: - case R_ALPHA_GOTTPREL: - BFD_ASSERT(info.gotent != NULL); - if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type)) - goto error_return; - break; - - case R_ALPHA_TLSGD: - case R_ALPHA_TLSLDM: - BFD_ASSERT(info.gotent != NULL); - if (!elf64_alpha_relax_tls_get_addr (&info, symval, irel, - r_type == R_ALPHA_TLSGD)) - goto error_return; - break; - } - } - - if (isymbuf != NULL - && symtab_hdr->contents != (unsigned char *) isymbuf) - { - if (!link_info->keep_memory) - free (isymbuf); - else - { - /* Cache the symbols for elf_link_input_bfd. */ - symtab_hdr->contents = (unsigned char *) isymbuf; - } - } - - if (info.contents != NULL - && elf_section_data (sec)->this_hdr.contents != info.contents) - { - if (!info.changed_contents && !link_info->keep_memory) - free (info.contents); - else - { - /* Cache the section contents for elf_link_input_bfd. */ - elf_section_data (sec)->this_hdr.contents = info.contents; - } - } - - if (elf_section_data (sec)->relocs != internal_relocs) - { - if (!info.changed_relocs) - free (internal_relocs); - else - elf_section_data (sec)->relocs = internal_relocs; - } - - *again = info.changed_contents || info.changed_relocs; - - return TRUE; - - error_return: - if (isymbuf != NULL - && symtab_hdr->contents != (unsigned char *) isymbuf) - free (isymbuf); - if (info.contents != NULL - && elf_section_data (sec)->this_hdr.contents != info.contents) - free (info.contents); - if (internal_relocs != NULL - && elf_section_data (sec)->relocs != internal_relocs) - free (internal_relocs); - return FALSE; -} - -/* Emit a dynamic relocation for (DYNINDX, RTYPE, ADDEND) at (SEC, OFFSET) - into the next available slot in SREL. */ - -static void -elf64_alpha_emit_dynrel (bfd *abfd, struct bfd_link_info *info, - asection *sec, asection *srel, bfd_vma offset, - long dynindx, long rtype, bfd_vma addend) -{ - Elf_Internal_Rela outrel; - bfd_byte *loc; - - BFD_ASSERT (srel != NULL); - - outrel.r_info = ELF64_R_INFO (dynindx, rtype); - outrel.r_addend = addend; - - offset = _bfd_elf_section_offset (abfd, info, sec, offset); - if ((offset | 1) != (bfd_vma) -1) - outrel.r_offset = sec->output_section->vma + sec->output_offset + offset; - else - memset (&outrel, 0, sizeof (outrel)); - - loc = srel->contents; - loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); - bfd_elf64_swap_reloca_out (abfd, &outrel, loc); - BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count <= srel->size); -} - -/* Relocate an Alpha ELF section for 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. */ - -static bfd_boolean -elf64_alpha_relocate_section_r (bfd *output_bfd ATTRIBUTE_UNUSED, - struct bfd_link_info *info ATTRIBUTE_UNUSED, - bfd *input_bfd, asection *input_section, - bfd_byte *contents ATTRIBUTE_UNUSED, - Elf_Internal_Rela *relocs, - Elf_Internal_Sym *local_syms, - asection **local_sections) -{ - unsigned long symtab_hdr_sh_info; - Elf_Internal_Rela *rel; - Elf_Internal_Rela *relend; - struct elf_link_hash_entry **sym_hashes; - bfd_boolean ret_val = TRUE; - - symtab_hdr_sh_info = elf_symtab_hdr (input_bfd).sh_info; - sym_hashes = elf_sym_hashes (input_bfd); - - relend = relocs + input_section->reloc_count; - for (rel = relocs; rel < relend; rel++) - { - unsigned long r_symndx; - Elf_Internal_Sym *sym; - asection *sec; - unsigned long r_type; - - r_type = ELF64_R_TYPE (rel->r_info); - if (r_type >= R_ALPHA_max) - { - (*_bfd_error_handler) - (_("%B: unknown relocation type %d"), - input_bfd, (int) r_type); - bfd_set_error (bfd_error_bad_value); - ret_val = FALSE; - continue; - } - - /* The symbol associated with GPDISP and LITUSE is - immaterial. Only the addend is significant. */ - if (r_type == R_ALPHA_GPDISP || r_type == R_ALPHA_LITUSE) - continue; - - r_symndx = ELF64_R_SYM (rel->r_info); - if (r_symndx < symtab_hdr_sh_info) - { - sym = local_syms + r_symndx; - sec = local_sections[r_symndx]; - } - else - { - struct elf_link_hash_entry *h; - - h = sym_hashes[r_symndx - symtab_hdr_sh_info]; - - while (h->root.type == bfd_link_hash_indirect - || h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - - if (h->root.type != bfd_link_hash_defined - && h->root.type != bfd_link_hash_defweak) - continue; - - sym = NULL; - sec = h->root.u.def.section; - } - - if (sec != NULL && discarded_section (sec)) - RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, - rel, 1, relend, - elf64_alpha_howto_table + r_type, 0, - contents); - - if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) - rel->r_addend += sec->output_offset; - } - - return ret_val; -} - -/* Relocate an Alpha ELF section. */ - -static bfd_boolean -elf64_alpha_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) -{ - Elf_Internal_Shdr *symtab_hdr; - Elf_Internal_Rela *rel; - Elf_Internal_Rela *relend; - asection *sgot, *srel, *srelgot; - bfd *dynobj, *gotobj; - bfd_vma gp, tp_base, dtp_base; - struct alpha_elf_got_entry **local_got_entries; - bfd_boolean ret_val; - - BFD_ASSERT (is_alpha_elf (input_bfd)); - - /* Handle relocatable links with a smaller loop. */ - if (info->relocatable) - return elf64_alpha_relocate_section_r (output_bfd, info, input_bfd, - input_section, contents, relocs, - local_syms, local_sections); - - /* This is a final link. */ - - ret_val = TRUE; - - symtab_hdr = &elf_symtab_hdr (input_bfd); - - dynobj = elf_hash_table (info)->dynobj; - if (dynobj) - srelgot = bfd_get_linker_section (dynobj, ".rela.got"); - else - srelgot = NULL; - - if (input_section->flags & SEC_ALLOC) - { - const char *section_name; - section_name = (bfd_elf_string_from_elf_section - (input_bfd, elf_elfheader(input_bfd)->e_shstrndx, - _bfd_elf_single_rel_hdr (input_section)->sh_name)); - BFD_ASSERT(section_name != NULL); - srel = bfd_get_linker_section (dynobj, section_name); - } - else - srel = NULL; - - /* Find the gp value for this input bfd. */ - gotobj = alpha_elf_tdata (input_bfd)->gotobj; - if (gotobj) - { - sgot = alpha_elf_tdata (gotobj)->got; - gp = _bfd_get_gp_value (gotobj); - if (gp == 0) - { - gp = (sgot->output_section->vma - + sgot->output_offset - + 0x8000); - _bfd_set_gp_value (gotobj, gp); - } - } - else - { - sgot = NULL; - gp = 0; - } - - local_got_entries = alpha_elf_tdata(input_bfd)->local_got_entries; - - if (elf_hash_table (info)->tls_sec != NULL) - { - dtp_base = alpha_get_dtprel_base (info); - tp_base = alpha_get_tprel_base (info); - } - else - dtp_base = tp_base = 0; - - relend = relocs + input_section->reloc_count; - for (rel = relocs; rel < relend; rel++) - { - struct alpha_elf_link_hash_entry *h = NULL; - struct alpha_elf_got_entry *gotent; - bfd_reloc_status_type r; - reloc_howto_type *howto; - unsigned long r_symndx; - Elf_Internal_Sym *sym = NULL; - asection *sec = NULL; - bfd_vma value; - bfd_vma addend; - bfd_boolean dynamic_symbol_p; - bfd_boolean unresolved_reloc = FALSE; - bfd_boolean undef_weak_ref = FALSE; - unsigned long r_type; - - r_type = ELF64_R_TYPE(rel->r_info); - if (r_type >= R_ALPHA_max) - { - (*_bfd_error_handler) - (_("%B: unknown relocation type %d"), - input_bfd, (int) r_type); - bfd_set_error (bfd_error_bad_value); - ret_val = FALSE; - continue; - } - - howto = elf64_alpha_howto_table + r_type; - r_symndx = ELF64_R_SYM(rel->r_info); - - /* The symbol for a TLSLDM reloc is ignored. Collapse the - reloc to the STN_UNDEF (0) symbol so that they all match. */ - if (r_type == R_ALPHA_TLSLDM) - r_symndx = STN_UNDEF; - - if (r_symndx < symtab_hdr->sh_info) - { - asection *msec; - sym = local_syms + r_symndx; - sec = local_sections[r_symndx]; - msec = sec; - value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel); - - /* If this is a tp-relative relocation against sym STN_UNDEF (0), - this is hackery from relax_section. Force the value to - be the tls module base. */ - if (r_symndx == STN_UNDEF - && (r_type == R_ALPHA_TLSLDM - || r_type == R_ALPHA_GOTTPREL - || r_type == R_ALPHA_TPREL64 - || r_type == R_ALPHA_TPRELHI - || r_type == R_ALPHA_TPRELLO - || r_type == R_ALPHA_TPREL16)) - value = dtp_base; - - if (local_got_entries) - gotent = local_got_entries[r_symndx]; - else - gotent = NULL; - - /* Need to adjust local GOT entries' addends for SEC_MERGE - unless it has been done already. */ - if ((sec->flags & SEC_MERGE) - && ELF_ST_TYPE (sym->st_info) == STT_SECTION - && sec->sec_info_type == SEC_INFO_TYPE_MERGE - && gotent - && !gotent->reloc_xlated) - { - struct alpha_elf_got_entry *ent; - - for (ent = gotent; ent; ent = ent->next) - { - ent->reloc_xlated = 1; - if (ent->use_count == 0) - continue; - msec = sec; - ent->addend = - _bfd_merged_section_offset (output_bfd, &msec, - elf_section_data (sec)-> - sec_info, - sym->st_value + ent->addend); - ent->addend -= sym->st_value; - ent->addend += msec->output_section->vma - + msec->output_offset - - sec->output_section->vma - - sec->output_offset; - } - } - - dynamic_symbol_p = FALSE; - } - else - { - bfd_boolean warned; - struct elf_link_hash_entry *hh; - struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); - - RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, - r_symndx, symtab_hdr, sym_hashes, - hh, sec, value, - unresolved_reloc, warned); - - if (warned) - continue; - - if (value == 0 - && ! unresolved_reloc - && hh->root.type == bfd_link_hash_undefweak) - undef_weak_ref = TRUE; - - h = (struct alpha_elf_link_hash_entry *) hh; - dynamic_symbol_p = alpha_elf_dynamic_symbol_p (&h->root, info); - gotent = h->got_entries; - } - - if (sec != NULL && discarded_section (sec)) - RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, - rel, 1, relend, howto, 0, contents); - - addend = rel->r_addend; - value += addend; - - /* Search for the proper got entry. */ - for (; gotent ; gotent = gotent->next) - if (gotent->gotobj == gotobj - && gotent->reloc_type == r_type - && gotent->addend == addend) - break; - - switch (r_type) - { - case R_ALPHA_GPDISP: - { - bfd_byte *p_ldah, *p_lda; - - BFD_ASSERT(gp != 0); - - value = (input_section->output_section->vma - + input_section->output_offset - + rel->r_offset); - - p_ldah = contents + rel->r_offset; - p_lda = p_ldah + rel->r_addend; - - r = elf64_alpha_do_reloc_gpdisp (input_bfd, gp - value, - p_ldah, p_lda); - } - break; - - case R_ALPHA_LITERAL: - BFD_ASSERT(sgot != NULL); - BFD_ASSERT(gp != 0); - BFD_ASSERT(gotent != NULL); - BFD_ASSERT(gotent->use_count >= 1); - - if (!gotent->reloc_done) - { - gotent->reloc_done = 1; - - bfd_put_64 (output_bfd, value, - sgot->contents + gotent->got_offset); - - /* If the symbol has been forced local, output a - RELATIVE reloc, otherwise it will be handled in - finish_dynamic_symbol. */ - if (info->shared && !dynamic_symbol_p && !undef_weak_ref) - elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, - gotent->got_offset, 0, - R_ALPHA_RELATIVE, value); - } - - value = (sgot->output_section->vma - + sgot->output_offset - + gotent->got_offset); - value -= gp; - goto default_reloc; - - case R_ALPHA_GPREL32: - case R_ALPHA_GPREL16: - case R_ALPHA_GPRELLOW: - if (dynamic_symbol_p) - { - (*_bfd_error_handler) - (_("%B: gp-relative relocation against dynamic symbol %s"), - input_bfd, h->root.root.root.string); - ret_val = FALSE; - } - BFD_ASSERT(gp != 0); - value -= gp; - goto default_reloc; - - case R_ALPHA_GPRELHIGH: - if (dynamic_symbol_p) - { - (*_bfd_error_handler) - (_("%B: gp-relative relocation against dynamic symbol %s"), - input_bfd, h->root.root.root.string); - ret_val = FALSE; - } - BFD_ASSERT(gp != 0); - value -= gp; - value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); - goto default_reloc; - - case R_ALPHA_HINT: - /* A call to a dynamic symbol is definitely out of range of - the 16-bit displacement. Don't bother writing anything. */ - if (dynamic_symbol_p) - { - r = bfd_reloc_ok; - break; - } - /* The regular PC-relative stuff measures from the start of - the instruction rather than the end. */ - value -= 4; - goto default_reloc; - - case R_ALPHA_BRADDR: - if (dynamic_symbol_p) - { - (*_bfd_error_handler) - (_("%B: pc-relative relocation against dynamic symbol %s"), - input_bfd, h->root.root.root.string); - ret_val = FALSE; - } - /* The regular PC-relative stuff measures from the start of - the instruction rather than the end. */ - value -= 4; - goto default_reloc; - - case R_ALPHA_BRSGP: - { - int other; - const char *name; - - /* The regular PC-relative stuff measures from the start of - the instruction rather than the end. */ - value -= 4; - - /* The source and destination gp must be the same. Note that - the source will always have an assigned gp, since we forced - one in check_relocs, but that the destination may not, as - it might not have had any relocations at all. Also take - care not to crash if H is an undefined symbol. */ - if (h != NULL && sec != NULL - && alpha_elf_tdata (sec->owner)->gotobj - && gotobj != alpha_elf_tdata (sec->owner)->gotobj) - { - (*_bfd_error_handler) - (_("%B: change in gp: BRSGP %s"), - input_bfd, h->root.root.root.string); - ret_val = FALSE; - } - - /* The symbol should be marked either NOPV or STD_GPLOAD. */ - if (h != NULL) - other = h->root.other; - else - other = sym->st_other; - switch (other & STO_ALPHA_STD_GPLOAD) - { - case STO_ALPHA_NOPV: - break; - case STO_ALPHA_STD_GPLOAD: - value += 8; - break; - default: - if (h != NULL) - name = h->root.root.root.string; - else - { - name = (bfd_elf_string_from_elf_section - (input_bfd, symtab_hdr->sh_link, sym->st_name)); - if (name == NULL) - name = _("<unknown>"); - else if (name[0] == 0) - name = bfd_section_name (input_bfd, sec); - } - (*_bfd_error_handler) - (_("%B: !samegp reloc against symbol without .prologue: %s"), - input_bfd, name); - ret_val = FALSE; - break; - } - - goto default_reloc; - } - - case R_ALPHA_REFLONG: - case R_ALPHA_REFQUAD: - case R_ALPHA_DTPREL64: - case R_ALPHA_TPREL64: - { - long dynindx, dyntype = r_type; - bfd_vma dynaddend; - - /* Careful here to remember RELATIVE relocations for global - variables for symbolic shared objects. */ - - if (dynamic_symbol_p) - { - BFD_ASSERT(h->root.dynindx != -1); - dynindx = h->root.dynindx; - dynaddend = addend; - addend = 0, value = 0; - } - else if (r_type == R_ALPHA_DTPREL64) - { - BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); - value -= dtp_base; - goto default_reloc; - } - else if (r_type == R_ALPHA_TPREL64) - { - BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); - if (!info->shared || info->pie) - { - value -= tp_base; - goto default_reloc; - } - dynindx = 0; - dynaddend = value - dtp_base; - } - else if (info->shared - && r_symndx != STN_UNDEF - && (input_section->flags & SEC_ALLOC) - && !undef_weak_ref - && !(unresolved_reloc - && (_bfd_elf_section_offset (output_bfd, info, - input_section, - rel->r_offset) - == (bfd_vma) -1))) - { - if (r_type == R_ALPHA_REFLONG) - { - (*_bfd_error_handler) - (_("%B: unhandled dynamic relocation against %s"), - input_bfd, - h->root.root.root.string); - ret_val = FALSE; - } - dynindx = 0; - dyntype = R_ALPHA_RELATIVE; - dynaddend = value; - } - else - goto default_reloc; - - if (input_section->flags & SEC_ALLOC) - elf64_alpha_emit_dynrel (output_bfd, info, input_section, - srel, rel->r_offset, dynindx, - dyntype, dynaddend); - } - goto default_reloc; - - case R_ALPHA_SREL16: - case R_ALPHA_SREL32: - case R_ALPHA_SREL64: - if (dynamic_symbol_p) - { - (*_bfd_error_handler) - (_("%B: pc-relative relocation against dynamic symbol %s"), - input_bfd, h->root.root.root.string); - ret_val = FALSE; - } - else if ((info->shared || info->pie) && undef_weak_ref) - { - (*_bfd_error_handler) - (_("%B: pc-relative relocation against undefined weak symbol %s"), - input_bfd, h->root.root.root.string); - ret_val = FALSE; - } - - - /* ??? .eh_frame references to discarded sections will be smashed - to relocations against SHN_UNDEF. The .eh_frame format allows - NULL to be encoded as 0 in any format, so this works here. */ - if (r_symndx == STN_UNDEF - || (unresolved_reloc - && _bfd_elf_section_offset (output_bfd, info, - input_section, - rel->r_offset) == (bfd_vma) -1)) - howto = (elf64_alpha_howto_table - + (r_type - R_ALPHA_SREL32 + R_ALPHA_REFLONG)); - goto default_reloc; - - case R_ALPHA_TLSLDM: - /* Ignore the symbol for the relocation. The result is always - the current module. */ - dynamic_symbol_p = 0; - /* FALLTHRU */ - - case R_ALPHA_TLSGD: - if (!gotent->reloc_done) - { - gotent->reloc_done = 1; - - /* Note that the module index for the main program is 1. */ - bfd_put_64 (output_bfd, !info->shared && !dynamic_symbol_p, - sgot->contents + gotent->got_offset); - - /* If the symbol has been forced local, output a - DTPMOD64 reloc, otherwise it will be handled in - finish_dynamic_symbol. */ - if (info->shared && !dynamic_symbol_p) - elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, - gotent->got_offset, 0, - R_ALPHA_DTPMOD64, 0); - - if (dynamic_symbol_p || r_type == R_ALPHA_TLSLDM) - value = 0; - else - { - BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); - value -= dtp_base; - } - bfd_put_64 (output_bfd, value, - sgot->contents + gotent->got_offset + 8); - } - - value = (sgot->output_section->vma - + sgot->output_offset - + gotent->got_offset); - value -= gp; - goto default_reloc; - - case R_ALPHA_DTPRELHI: - case R_ALPHA_DTPRELLO: - case R_ALPHA_DTPREL16: - if (dynamic_symbol_p) - { - (*_bfd_error_handler) - (_("%B: dtp-relative relocation against dynamic symbol %s"), - input_bfd, h->root.root.root.string); - ret_val = FALSE; - } - BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); - value -= dtp_base; - if (r_type == R_ALPHA_DTPRELHI) - value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); - goto default_reloc; - - case R_ALPHA_TPRELHI: - case R_ALPHA_TPRELLO: - case R_ALPHA_TPREL16: - if (info->shared && !info->pie) - { - (*_bfd_error_handler) - (_("%B: TLS local exec code cannot be linked into shared objects"), - input_bfd); - ret_val = FALSE; - } - else if (dynamic_symbol_p) - { - (*_bfd_error_handler) - (_("%B: tp-relative relocation against dynamic symbol %s"), - input_bfd, h->root.root.root.string); - ret_val = FALSE; - } - BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); - value -= tp_base; - if (r_type == R_ALPHA_TPRELHI) - value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); - goto default_reloc; - - case R_ALPHA_GOTDTPREL: - case R_ALPHA_GOTTPREL: - BFD_ASSERT(sgot != NULL); - BFD_ASSERT(gp != 0); - BFD_ASSERT(gotent != NULL); - BFD_ASSERT(gotent->use_count >= 1); - - if (!gotent->reloc_done) - { - gotent->reloc_done = 1; - - if (dynamic_symbol_p) - value = 0; - else - { - BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); - if (r_type == R_ALPHA_GOTDTPREL) - value -= dtp_base; - else if (!info->shared) - value -= tp_base; - else - { - elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, - gotent->got_offset, 0, - R_ALPHA_TPREL64, - value - dtp_base); - value = 0; - } - } - bfd_put_64 (output_bfd, value, - sgot->contents + gotent->got_offset); - } - - value = (sgot->output_section->vma - + sgot->output_offset - + gotent->got_offset); - value -= gp; - goto default_reloc; - - default: - default_reloc: - r = _bfd_final_link_relocate (howto, input_bfd, input_section, - contents, rel->r_offset, value, 0); - break; - } - - switch (r) - { - case bfd_reloc_ok: - break; - - case bfd_reloc_overflow: - { - const char *name; - - /* Don't warn if the overflow is due to pc relative reloc - against discarded section. Section optimization code should - handle it. */ - - if (r_symndx < symtab_hdr->sh_info - && sec != NULL && howto->pc_relative - && discarded_section (sec)) - break; - - if (h != NULL) - name = NULL; - else - { - name = (bfd_elf_string_from_elf_section - (input_bfd, symtab_hdr->sh_link, sym->st_name)); - if (name == NULL) - return FALSE; - if (*name == '\0') - name = bfd_section_name (input_bfd, sec); - } - if (! ((*info->callbacks->reloc_overflow) - (info, (h ? &h->root.root : NULL), name, howto->name, - (bfd_vma) 0, input_bfd, input_section, - rel->r_offset))) - ret_val = FALSE; - } - break; - - default: - case bfd_reloc_outofrange: - abort (); - } - } - - return ret_val; -} - -/* Finish up dynamic symbol handling. We set the contents of various - dynamic sections here. */ - -static bfd_boolean -elf64_alpha_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info, - struct elf_link_hash_entry *h, - Elf_Internal_Sym *sym) -{ - struct alpha_elf_link_hash_entry *ah = (struct alpha_elf_link_hash_entry *)h; - bfd *dynobj = elf_hash_table(info)->dynobj; - - if (h->needs_plt) - { - /* Fill in the .plt entry for this symbol. */ - asection *splt, *sgot, *srel; - Elf_Internal_Rela outrel; - bfd_byte *loc; - bfd_vma got_addr, plt_addr; - bfd_vma plt_index; - struct alpha_elf_got_entry *gotent; - - BFD_ASSERT (h->dynindx != -1); - - splt = bfd_get_linker_section (dynobj, ".plt"); - BFD_ASSERT (splt != NULL); - srel = bfd_get_linker_section (dynobj, ".rela.plt"); - BFD_ASSERT (srel != NULL); - - for (gotent = ah->got_entries; gotent ; gotent = gotent->next) - if (gotent->reloc_type == R_ALPHA_LITERAL - && gotent->use_count > 0) - { - unsigned int insn; - int disp; - - sgot = alpha_elf_tdata (gotent->gotobj)->got; - BFD_ASSERT (sgot != NULL); - - BFD_ASSERT (gotent->got_offset != -1); - BFD_ASSERT (gotent->plt_offset != -1); - - got_addr = (sgot->output_section->vma - + sgot->output_offset - + gotent->got_offset); - plt_addr = (splt->output_section->vma - + splt->output_offset - + gotent->plt_offset); - - plt_index = (gotent->plt_offset-PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; - - /* Fill in the entry in the procedure linkage table. */ - if (elf64_alpha_use_secureplt) - { - disp = (PLT_HEADER_SIZE - 4) - (gotent->plt_offset + 4); - insn = INSN_AD (INSN_BR, 31, disp); - bfd_put_32 (output_bfd, insn, - splt->contents + gotent->plt_offset); - - plt_index = ((gotent->plt_offset - NEW_PLT_HEADER_SIZE) - / NEW_PLT_ENTRY_SIZE); - } - else - { - disp = -(gotent->plt_offset + 4); - insn = INSN_AD (INSN_BR, 28, disp); - bfd_put_32 (output_bfd, insn, - splt->contents + gotent->plt_offset); - bfd_put_32 (output_bfd, INSN_UNOP, - splt->contents + gotent->plt_offset + 4); - bfd_put_32 (output_bfd, INSN_UNOP, - splt->contents + gotent->plt_offset + 8); - - plt_index = ((gotent->plt_offset - OLD_PLT_HEADER_SIZE) - / OLD_PLT_ENTRY_SIZE); - } - - /* Fill in the entry in the .rela.plt section. */ - outrel.r_offset = got_addr; - outrel.r_info = ELF64_R_INFO(h->dynindx, R_ALPHA_JMP_SLOT); - outrel.r_addend = 0; - - loc = srel->contents + plt_index * sizeof (Elf64_External_Rela); - bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); - - /* Fill in the entry in the .got. */ - bfd_put_64 (output_bfd, plt_addr, - sgot->contents + gotent->got_offset); - } - } - else if (alpha_elf_dynamic_symbol_p (h, info)) - { - /* Fill in the dynamic relocations for this symbol's .got entries. */ - asection *srel; - struct alpha_elf_got_entry *gotent; - - srel = bfd_get_linker_section (dynobj, ".rela.got"); - BFD_ASSERT (srel != NULL); - - for (gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries; - gotent != NULL; - gotent = gotent->next) - { - asection *sgot; - long r_type; - - if (gotent->use_count == 0) - continue; - - sgot = alpha_elf_tdata (gotent->gotobj)->got; - - r_type = gotent->reloc_type; - switch (r_type) - { - case R_ALPHA_LITERAL: - r_type = R_ALPHA_GLOB_DAT; - break; - case R_ALPHA_TLSGD: - r_type = R_ALPHA_DTPMOD64; - break; - case R_ALPHA_GOTDTPREL: - r_type = R_ALPHA_DTPREL64; - break; - case R_ALPHA_GOTTPREL: - r_type = R_ALPHA_TPREL64; - break; - case R_ALPHA_TLSLDM: - default: - abort (); - } - - elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel, - gotent->got_offset, h->dynindx, - r_type, gotent->addend); - - if (gotent->reloc_type == R_ALPHA_TLSGD) - elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel, - gotent->got_offset + 8, h->dynindx, - R_ALPHA_DTPREL64, gotent->addend); - } - } - - /* Mark some specially defined symbols as absolute. */ - if (h == elf_hash_table (info)->hdynamic - || h == elf_hash_table (info)->hgot - || h == elf_hash_table (info)->hplt) - sym->st_shndx = SHN_ABS; - - return TRUE; -} - -/* Finish up the dynamic sections. */ - -static bfd_boolean -elf64_alpha_finish_dynamic_sections (bfd *output_bfd, - struct bfd_link_info *info) -{ - bfd *dynobj; - asection *sdyn; - - dynobj = elf_hash_table (info)->dynobj; - sdyn = bfd_get_linker_section (dynobj, ".dynamic"); - - if (elf_hash_table (info)->dynamic_sections_created) - { - asection *splt, *sgotplt, *srelaplt; - Elf64_External_Dyn *dyncon, *dynconend; - bfd_vma plt_vma, gotplt_vma; - - splt = bfd_get_linker_section (dynobj, ".plt"); - srelaplt = bfd_get_linker_section (output_bfd, ".rela.plt"); - BFD_ASSERT (splt != NULL && sdyn != NULL); - - plt_vma = splt->output_section->vma + splt->output_offset; - - gotplt_vma = 0; - if (elf64_alpha_use_secureplt) - { - sgotplt = bfd_get_linker_section (dynobj, ".got.plt"); - BFD_ASSERT (sgotplt != NULL); - if (sgotplt->size > 0) - gotplt_vma = sgotplt->output_section->vma + sgotplt->output_offset; - } - - dyncon = (Elf64_External_Dyn *) sdyn->contents; - dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); - for (; dyncon < dynconend; dyncon++) - { - Elf_Internal_Dyn dyn; - - bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); - - switch (dyn.d_tag) - { - case DT_PLTGOT: - dyn.d_un.d_ptr - = elf64_alpha_use_secureplt ? gotplt_vma : plt_vma; - break; - case DT_PLTRELSZ: - dyn.d_un.d_val = srelaplt ? srelaplt->size : 0; - break; - case DT_JMPREL: - dyn.d_un.d_ptr = srelaplt ? srelaplt->vma : 0; - break; - - case DT_RELASZ: - /* My interpretation of the TIS v1.1 ELF document indicates - that RELASZ should not include JMPREL. This is not what - the rest of the BFD does. It is, however, what the - glibc ld.so wants. Do this fixup here until we found - out who is right. */ - if (srelaplt) - dyn.d_un.d_val -= srelaplt->size; - break; - } - - bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); - } - - /* Initialize the plt header. */ - if (splt->size > 0) - { - unsigned int insn; - int ofs; - - if (elf64_alpha_use_secureplt) - { - ofs = gotplt_vma - (plt_vma + PLT_HEADER_SIZE); - - insn = INSN_ABC (INSN_SUBQ, 27, 28, 25); - bfd_put_32 (output_bfd, insn, splt->contents); - - insn = INSN_ABO (INSN_LDAH, 28, 28, (ofs + 0x8000) >> 16); - bfd_put_32 (output_bfd, insn, splt->contents + 4); - - insn = INSN_ABC (INSN_S4SUBQ, 25, 25, 25); - bfd_put_32 (output_bfd, insn, splt->contents + 8); - - insn = INSN_ABO (INSN_LDA, 28, 28, ofs); - bfd_put_32 (output_bfd, insn, splt->contents + 12); - - insn = INSN_ABO (INSN_LDQ, 27, 28, 0); - bfd_put_32 (output_bfd, insn, splt->contents + 16); - - insn = INSN_ABC (INSN_ADDQ, 25, 25, 25); - bfd_put_32 (output_bfd, insn, splt->contents + 20); - - insn = INSN_ABO (INSN_LDQ, 28, 28, 8); - bfd_put_32 (output_bfd, insn, splt->contents + 24); - - insn = INSN_AB (INSN_JMP, 31, 27); - bfd_put_32 (output_bfd, insn, splt->contents + 28); - - insn = INSN_AD (INSN_BR, 28, -PLT_HEADER_SIZE); - bfd_put_32 (output_bfd, insn, splt->contents + 32); - } - else - { - insn = INSN_AD (INSN_BR, 27, 0); /* br $27, .+4 */ - bfd_put_32 (output_bfd, insn, splt->contents); - - insn = INSN_ABO (INSN_LDQ, 27, 27, 12); - bfd_put_32 (output_bfd, insn, splt->contents + 4); - - insn = INSN_UNOP; - bfd_put_32 (output_bfd, insn, splt->contents + 8); - - insn = INSN_AB (INSN_JMP, 27, 27); - bfd_put_32 (output_bfd, insn, splt->contents + 12); - - /* The next two words will be filled in by ld.so. */ - bfd_put_64 (output_bfd, 0, splt->contents + 16); - bfd_put_64 (output_bfd, 0, splt->contents + 24); - } - - elf_section_data (splt->output_section)->this_hdr.sh_entsize = 0; - } - } - - return TRUE; -} - -/* We need to use a special link routine to handle the .mdebug section. - We need to merge all instances of these sections together, not write - them all out sequentially. */ - -static bfd_boolean -elf64_alpha_final_link (bfd *abfd, struct bfd_link_info *info) -{ - asection *o; - struct bfd_link_order *p; - asection *mdebug_sec; - struct ecoff_debug_info debug; - const struct ecoff_debug_swap *swap - = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; - HDRR *symhdr = &debug.symbolic_header; - void * mdebug_handle = NULL; - struct alpha_elf_link_hash_table * htab; - - htab = alpha_elf_hash_table (info); - if (htab == NULL) - return FALSE; - - /* Go through the sections and collect the mdebug information. */ - mdebug_sec = NULL; - for (o = abfd->sections; o != (asection *) NULL; o = o->next) - { - if (strcmp (o->name, ".mdebug") == 0) - { - struct extsym_info einfo; - - /* We have found the .mdebug section in the output file. - Look through all the link_orders comprising it and merge - the information together. */ - symhdr->magic = swap->sym_magic; - /* FIXME: What should the version stamp be? */ - symhdr->vstamp = 0; - symhdr->ilineMax = 0; - symhdr->cbLine = 0; - symhdr->idnMax = 0; - symhdr->ipdMax = 0; - symhdr->isymMax = 0; - symhdr->ioptMax = 0; - symhdr->iauxMax = 0; - symhdr->issMax = 0; - symhdr->issExtMax = 0; - symhdr->ifdMax = 0; - symhdr->crfd = 0; - symhdr->iextMax = 0; - - /* We accumulate the debugging information itself in the - debug_info structure. */ - debug.line = NULL; - debug.external_dnr = NULL; - debug.external_pdr = NULL; - debug.external_sym = NULL; - debug.external_opt = NULL; - debug.external_aux = NULL; - debug.ss = NULL; - debug.ssext = debug.ssext_end = NULL; - debug.external_fdr = NULL; - debug.external_rfd = NULL; - debug.external_ext = debug.external_ext_end = NULL; - - mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); - if (mdebug_handle == NULL) - return FALSE; - - if (1) - { - asection *s; - EXTR esym; - bfd_vma last = 0; - unsigned int i; - static const char * const name[] = - { - ".text", ".init", ".fini", ".data", - ".rodata", ".sdata", ".sbss", ".bss" - }; - static const int sc[] = { scText, scInit, scFini, scData, - scRData, scSData, scSBss, scBss }; - - esym.jmptbl = 0; - esym.cobol_main = 0; - esym.weakext = 0; - esym.reserved = 0; - esym.ifd = ifdNil; - esym.asym.iss = issNil; - esym.asym.st = stLocal; - esym.asym.reserved = 0; - esym.asym.index = indexNil; - for (i = 0; i < 8; i++) - { - esym.asym.sc = sc[i]; - s = bfd_get_section_by_name (abfd, name[i]); - if (s != NULL) - { - esym.asym.value = s->vma; - last = s->vma + s->size; - } - else - esym.asym.value = last; - - if (! bfd_ecoff_debug_one_external (abfd, &debug, swap, - name[i], &esym)) - return FALSE; - } - } - - for (p = o->map_head.link_order; - p != (struct bfd_link_order *) NULL; - p = p->next) - { - asection *input_section; - bfd *input_bfd; - const struct ecoff_debug_swap *input_swap; - struct ecoff_debug_info input_debug; - char *eraw_src; - char *eraw_end; - - if (p->type != bfd_indirect_link_order) - { - if (p->type == bfd_data_link_order) - continue; - abort (); - } - - input_section = p->u.indirect.section; - input_bfd = input_section->owner; - - if (! is_alpha_elf (input_bfd)) - /* I don't know what a non ALPHA ELF bfd would be - doing with a .mdebug section, but I don't really - want to deal with it. */ - continue; - - input_swap = (get_elf_backend_data (input_bfd) - ->elf_backend_ecoff_debug_swap); - - BFD_ASSERT (p->size == input_section->size); - - /* The ECOFF linking code expects that we have already - read in the debugging information and set up an - ecoff_debug_info structure, so we do that now. */ - if (!elf64_alpha_read_ecoff_info (input_bfd, input_section, - &input_debug)) - return FALSE; - - if (! (bfd_ecoff_debug_accumulate - (mdebug_handle, abfd, &debug, swap, input_bfd, - &input_debug, input_swap, info))) - return FALSE; - - /* Loop through the external symbols. For each one with - interesting information, try to find the symbol in - the linker global hash table and save the information - for the output external symbols. */ - eraw_src = (char *) input_debug.external_ext; - eraw_end = (eraw_src - + (input_debug.symbolic_header.iextMax - * input_swap->external_ext_size)); - for (; - eraw_src < eraw_end; - eraw_src += input_swap->external_ext_size) - { - EXTR ext; - const char *name; - struct alpha_elf_link_hash_entry *h; - - (*input_swap->swap_ext_in) (input_bfd, eraw_src, &ext); - if (ext.asym.sc == scNil - || ext.asym.sc == scUndefined - || ext.asym.sc == scSUndefined) - continue; - - name = input_debug.ssext + ext.asym.iss; - h = alpha_elf_link_hash_lookup (htab, name, FALSE, FALSE, TRUE); - if (h == NULL || h->esym.ifd != -2) - continue; - - if (ext.ifd != -1) - { - BFD_ASSERT (ext.ifd - < input_debug.symbolic_header.ifdMax); - ext.ifd = input_debug.ifdmap[ext.ifd]; - } - - h->esym = ext; - } - - /* Free up the information we just read. */ - free (input_debug.line); - free (input_debug.external_dnr); - free (input_debug.external_pdr); - free (input_debug.external_sym); - free (input_debug.external_opt); - free (input_debug.external_aux); - free (input_debug.ss); - free (input_debug.ssext); - free (input_debug.external_fdr); - free (input_debug.external_rfd); - free (input_debug.external_ext); - - /* Hack: reset the SEC_HAS_CONTENTS flag so that - elf_link_input_bfd ignores this section. */ - input_section->flags &=~ SEC_HAS_CONTENTS; - } - - /* Build the external symbol information. */ - einfo.abfd = abfd; - einfo.info = info; - einfo.debug = &debug; - einfo.swap = swap; - einfo.failed = FALSE; - elf_link_hash_traverse (elf_hash_table (info), - elf64_alpha_output_extsym, - &einfo); - if (einfo.failed) - return FALSE; - - /* Set the size of the .mdebug section. */ - o->size = bfd_ecoff_debug_size (abfd, &debug, swap); - - /* Skip this section later on (I don't think this currently - matters, but someday it might). */ - o->map_head.link_order = (struct bfd_link_order *) NULL; - - mdebug_sec = o; - } - } - - /* Invoke the regular ELF backend linker to do all the work. */ - if (! bfd_elf_final_link (abfd, info)) - return FALSE; - - /* Now write out the computed sections. */ - - /* The .got subsections... */ - { - bfd *i, *dynobj = elf_hash_table(info)->dynobj; - for (i = htab->got_list; - i != NULL; - i = alpha_elf_tdata(i)->got_link_next) - { - asection *sgot; - - /* elf_bfd_final_link already did everything in dynobj. */ - if (i == dynobj) - continue; - - sgot = alpha_elf_tdata(i)->got; - if (! bfd_set_section_contents (abfd, sgot->output_section, - sgot->contents, - (file_ptr) sgot->output_offset, - sgot->size)) - return FALSE; - } - } - - if (mdebug_sec != (asection *) NULL) - { - BFD_ASSERT (abfd->output_has_begun); - if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, - swap, info, - mdebug_sec->filepos)) - return FALSE; - - bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); - } - - return TRUE; -} - -static enum elf_reloc_type_class -elf64_alpha_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, - const asection *rel_sec ATTRIBUTE_UNUSED, - const Elf_Internal_Rela *rela) -{ - switch ((int) ELF64_R_TYPE (rela->r_info)) - { - case R_ALPHA_RELATIVE: - return reloc_class_relative; - case R_ALPHA_JMP_SLOT: - return reloc_class_plt; - case R_ALPHA_COPY: - return reloc_class_copy; - default: - return reloc_class_normal; - } -} - -static const struct bfd_elf_special_section elf64_alpha_special_sections[] = -{ - { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL }, - { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL }, - { NULL, 0, 0, 0, 0 } -}; - -/* ECOFF swapping routines. These are used when dealing with the - .mdebug section, which is in the ECOFF debugging format. Copied - from elf32-mips.c. */ -static const struct ecoff_debug_swap -elf64_alpha_ecoff_debug_swap = -{ - /* Symbol table magic number. */ - magicSym2, - /* Alignment of debugging information. E.g., 4. */ - 8, - /* Sizes of external symbolic information. */ - sizeof (struct hdr_ext), - sizeof (struct dnr_ext), - sizeof (struct pdr_ext), - sizeof (struct sym_ext), - sizeof (struct opt_ext), - sizeof (struct fdr_ext), - sizeof (struct rfd_ext), - sizeof (struct ext_ext), - /* Functions to swap in external symbolic data. */ - ecoff_swap_hdr_in, - ecoff_swap_dnr_in, - ecoff_swap_pdr_in, - ecoff_swap_sym_in, - ecoff_swap_opt_in, - ecoff_swap_fdr_in, - ecoff_swap_rfd_in, - ecoff_swap_ext_in, - _bfd_ecoff_swap_tir_in, - _bfd_ecoff_swap_rndx_in, - /* Functions to swap out external symbolic data. */ - ecoff_swap_hdr_out, - ecoff_swap_dnr_out, - ecoff_swap_pdr_out, - ecoff_swap_sym_out, - ecoff_swap_opt_out, - ecoff_swap_fdr_out, - ecoff_swap_rfd_out, - ecoff_swap_ext_out, - _bfd_ecoff_swap_tir_out, - _bfd_ecoff_swap_rndx_out, - /* Function to read in symbolic data. */ - elf64_alpha_read_ecoff_info -}; - -/* Use a non-standard hash bucket size of 8. */ - -static const struct elf_size_info alpha_elf_size_info = -{ - sizeof (Elf64_External_Ehdr), - sizeof (Elf64_External_Phdr), - sizeof (Elf64_External_Shdr), - sizeof (Elf64_External_Rel), - sizeof (Elf64_External_Rela), - sizeof (Elf64_External_Sym), - sizeof (Elf64_External_Dyn), - sizeof (Elf_External_Note), - 8, - 1, - 64, 3, - ELFCLASS64, EV_CURRENT, - bfd_elf64_write_out_phdrs, - bfd_elf64_write_shdrs_and_ehdr, - bfd_elf64_checksum_contents, - bfd_elf64_write_relocs, - bfd_elf64_swap_symbol_in, - bfd_elf64_swap_symbol_out, - bfd_elf64_slurp_reloc_table, - bfd_elf64_slurp_symbol_table, - bfd_elf64_swap_dyn_in, - bfd_elf64_swap_dyn_out, - bfd_elf64_swap_reloc_in, - bfd_elf64_swap_reloc_out, - bfd_elf64_swap_reloca_in, - bfd_elf64_swap_reloca_out -}; - -#define TARGET_LITTLE_SYM bfd_elf64_alpha_vec -#define TARGET_LITTLE_NAME "elf64-alpha" -#define ELF_ARCH bfd_arch_alpha -#define ELF_TARGET_ID ALPHA_ELF_DATA -#define ELF_MACHINE_CODE EM_ALPHA -#define ELF_MAXPAGESIZE 0x10000 -#define ELF_COMMONPAGESIZE 0x2000 - -#define bfd_elf64_bfd_link_hash_table_create \ - elf64_alpha_bfd_link_hash_table_create - -#define bfd_elf64_bfd_reloc_type_lookup \ - elf64_alpha_bfd_reloc_type_lookup -#define bfd_elf64_bfd_reloc_name_lookup \ - elf64_alpha_bfd_reloc_name_lookup -#define elf_info_to_howto \ - elf64_alpha_info_to_howto - -#define bfd_elf64_mkobject \ - elf64_alpha_mkobject -#define elf_backend_object_p \ - elf64_alpha_object_p - -#define elf_backend_section_from_shdr \ - elf64_alpha_section_from_shdr -#define elf_backend_section_flags \ - elf64_alpha_section_flags -#define elf_backend_fake_sections \ - elf64_alpha_fake_sections - -#define bfd_elf64_bfd_is_local_label_name \ - elf64_alpha_is_local_label_name -#define bfd_elf64_find_nearest_line \ - elf64_alpha_find_nearest_line -#define bfd_elf64_bfd_relax_section \ - elf64_alpha_relax_section - -#define elf_backend_add_symbol_hook \ - elf64_alpha_add_symbol_hook -#define elf_backend_relocs_compatible \ - _bfd_elf_relocs_compatible -#define elf_backend_check_relocs \ - elf64_alpha_check_relocs -#define elf_backend_create_dynamic_sections \ - elf64_alpha_create_dynamic_sections -#define elf_backend_adjust_dynamic_symbol \ - elf64_alpha_adjust_dynamic_symbol -#define elf_backend_merge_symbol_attribute \ - elf64_alpha_merge_symbol_attribute -#define elf_backend_copy_indirect_symbol \ - elf64_alpha_copy_indirect_symbol -#define elf_backend_always_size_sections \ - elf64_alpha_always_size_sections -#define elf_backend_size_dynamic_sections \ - elf64_alpha_size_dynamic_sections -#define elf_backend_omit_section_dynsym \ - ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) -#define elf_backend_relocate_section \ - elf64_alpha_relocate_section -#define elf_backend_finish_dynamic_symbol \ - elf64_alpha_finish_dynamic_symbol -#define elf_backend_finish_dynamic_sections \ - elf64_alpha_finish_dynamic_sections -#define bfd_elf64_bfd_final_link \ - elf64_alpha_final_link -#define elf_backend_reloc_type_class \ - elf64_alpha_reloc_type_class - -#define elf_backend_can_gc_sections 1 -#define elf_backend_gc_mark_hook elf64_alpha_gc_mark_hook -#define elf_backend_gc_sweep_hook elf64_alpha_gc_sweep_hook - -#define elf_backend_ecoff_debug_swap \ - &elf64_alpha_ecoff_debug_swap - -#define elf_backend_size_info \ - alpha_elf_size_info - -#define elf_backend_special_sections \ - elf64_alpha_special_sections - -/* A few constants that determine how the .plt section is set up. */ -#define elf_backend_want_got_plt 0 -#define elf_backend_plt_readonly 0 -#define elf_backend_want_plt_sym 1 -#define elf_backend_got_header_size 0 - -#include "elf64-target.h" - -/* FreeBSD support. */ - -#undef TARGET_LITTLE_SYM -#define TARGET_LITTLE_SYM bfd_elf64_alpha_freebsd_vec -#undef TARGET_LITTLE_NAME -#define TARGET_LITTLE_NAME "elf64-alpha-freebsd" -#undef ELF_OSABI -#define ELF_OSABI ELFOSABI_FREEBSD - -/* The kernel recognizes executables as valid only if they carry a - "FreeBSD" label in the ELF header. So we put this label on all - executables and (for simplicity) also all other object files. */ - -static void -elf64_alpha_fbsd_post_process_headers (bfd * abfd, - struct bfd_link_info * link_info ATTRIBUTE_UNUSED) -{ - Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ - - i_ehdrp = elf_elfheader (abfd); - - /* Put an ABI label supported by FreeBSD >= 4.1. */ - i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi; -#ifdef OLD_FREEBSD_ABI_LABEL - /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */ - memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8); -#endif -} - -#undef elf_backend_post_process_headers -#define elf_backend_post_process_headers \ - elf64_alpha_fbsd_post_process_headers - -#undef elf64_bed -#define elf64_bed elf64_alpha_fbsd_bed - -#include "elf64-target.h" |