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4034 lines
128 KiB
C
4034 lines
128 KiB
C
/* M32R-specific support for 32-bit ELF.
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Copyright (C) 1996-2017 Free Software Foundation, Inc.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include "sysdep.h"
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#include "bfd.h"
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#include "libbfd.h"
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#include "elf-bfd.h"
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#include "elf/m32r.h"
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#define NOP_INSN 0x7000
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#define MAKE_PARALLEL(insn) ((insn) | 0x8000)
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/* Use REL instead of RELA to save space.
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This only saves space in libraries and object files, but perhaps
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relocs will be put in ROM? All in all though, REL relocs are a pain
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to work with. */
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/* #define USE_REL 1
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#ifndef USE_REL
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#define USE_REL 0
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#endif */
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/* Use RELA. But use REL to link old objects for backwords compatibility. */
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/* Functions for the M32R ELF linker. */
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/* The name of the dynamic interpreter. This is put in the .interp
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section. */
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#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
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/* The nop opcode we use. */
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#define M32R_NOP 0x7000f000
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#define PLT_EMPTY 0x10101010 /* RIE -> RIE */
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/* The size in bytes of an entry in the procedure linkage table. */
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#define PLT_ENTRY_SIZE 20
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#define PLT_HEADER_SIZE 20
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/* The first one entries in a procedure linkage table are reserved,
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and the initial contents are unimportant (we zero them out).
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Subsequent entries look like this. */
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#define PLT0_ENTRY_WORD0 0xd6c00000 /* seth r6, #high(.got+4) */
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#define PLT0_ENTRY_WORD1 0x86e60000 /* or3 r6, r6, #low(.got)+4) */
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#define PLT0_ENTRY_WORD2 0x24e626c6 /* ld r4, @r6+ -> ld r6, @r6 */
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#define PLT0_ENTRY_WORD3 0x1fc6f000 /* jmp r6 || pnop */
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#define PLT0_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
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#define PLT0_PIC_ENTRY_WORD0 0xa4cc0004 /* ld r4, @(4,r12) */
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#define PLT0_PIC_ENTRY_WORD1 0xa6cc0008 /* ld r6, @(8,r12) */
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#define PLT0_PIC_ENTRY_WORD2 0x1fc6f000 /* jmp r6 || nop */
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#define PLT0_PIC_ENTRY_WORD3 PLT_EMPTY /* RIE -> RIE */
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#define PLT0_PIC_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
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#define PLT_ENTRY_WORD0 0xe6000000 /* ld24 r6, .name_in_GOT */
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#define PLT_ENTRY_WORD1 0x06acf000 /* add r6, r12 || nop */
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#define PLT_ENTRY_WORD0b 0xd6c00000 /* seth r6, #high(.name_in_GOT) */
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#define PLT_ENTRY_WORD1b 0x86e60000 /* or3 r6, r6, #low(.name_in_GOT) */
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#define PLT_ENTRY_WORD2 0x26c61fc6 /* ld r6, @r6 -> jmp r6 */
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#define PLT_ENTRY_WORD3 0xe5000000 /* ld24 r5, $offset */
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#define PLT_ENTRY_WORD4 0xff000000 /* bra .plt0. */
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/* Utility to actually perform an R_M32R_10_PCREL reloc. */
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static bfd_reloc_status_type
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m32r_elf_do_10_pcrel_reloc (bfd *abfd,
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reloc_howto_type *howto,
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asection *input_section,
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bfd_byte *data,
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bfd_vma offset,
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asection *symbol_section ATTRIBUTE_UNUSED,
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bfd_vma symbol_value,
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bfd_vma addend)
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{
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bfd_signed_vma relocation;
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unsigned long x;
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bfd_reloc_status_type status;
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/* Sanity check the address (offset in section). */
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if (offset > bfd_get_section_limit (abfd, input_section))
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return bfd_reloc_outofrange;
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relocation = symbol_value + addend;
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/* Make it pc relative. */
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relocation -= (input_section->output_section->vma
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+ input_section->output_offset);
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/* These jumps mask off the lower two bits of the current address
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before doing pcrel calculations. */
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relocation -= (offset & -(bfd_vma) 4);
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if (relocation < -0x200 || relocation > 0x1ff)
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status = bfd_reloc_overflow;
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else
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status = bfd_reloc_ok;
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x = bfd_get_16 (abfd, data + offset);
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relocation >>= howto->rightshift;
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relocation <<= howto->bitpos;
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x = (x & ~howto->dst_mask) | (((x & howto->src_mask) + relocation) & howto->dst_mask);
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bfd_put_16 (abfd, (bfd_vma) x, data + offset);
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return status;
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}
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/* Handle the R_M32R_10_PCREL reloc. */
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static bfd_reloc_status_type
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m32r_elf_10_pcrel_reloc (bfd * abfd,
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arelent * reloc_entry,
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asymbol * symbol,
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void * data,
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asection * input_section,
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bfd * output_bfd,
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char ** error_message ATTRIBUTE_UNUSED)
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{
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/* This part is from bfd_elf_generic_reloc. */
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if (output_bfd != NULL
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&& (symbol->flags & BSF_SECTION_SYM) == 0
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&& (! reloc_entry->howto->partial_inplace
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|| reloc_entry->addend == 0))
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{
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reloc_entry->address += input_section->output_offset;
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return bfd_reloc_ok;
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}
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if (output_bfd != NULL)
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/* FIXME: See bfd_perform_relocation. Is this right? */
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return bfd_reloc_continue;
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return m32r_elf_do_10_pcrel_reloc (abfd, reloc_entry->howto,
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input_section,
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data, reloc_entry->address,
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symbol->section,
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(symbol->value
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+ symbol->section->output_section->vma
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+ symbol->section->output_offset),
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reloc_entry->addend);
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}
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/* Do generic partial_inplace relocation.
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This is a local replacement for bfd_elf_generic_reloc. */
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static bfd_reloc_status_type
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m32r_elf_generic_reloc (bfd *input_bfd,
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arelent *reloc_entry,
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asymbol *symbol,
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void * data,
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asection *input_section,
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bfd *output_bfd,
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char **error_message ATTRIBUTE_UNUSED)
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{
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bfd_reloc_status_type ret;
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bfd_vma relocation;
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bfd_byte *inplace_address;
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/* This part is from bfd_elf_generic_reloc.
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If we're relocating, and this an external symbol, we don't want
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to change anything. */
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if (output_bfd != NULL
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&& (symbol->flags & BSF_SECTION_SYM) == 0
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&& reloc_entry->addend == 0)
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{
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reloc_entry->address += input_section->output_offset;
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return bfd_reloc_ok;
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}
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/* Now do the reloc in the usual way.
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??? It would be nice to call bfd_elf_generic_reloc here,
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but we have partial_inplace set. bfd_elf_generic_reloc will
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pass the handling back to bfd_install_relocation which will install
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a section relative addend which is wrong. */
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/* Sanity check the address (offset in section). */
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if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section))
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return bfd_reloc_outofrange;
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ret = bfd_reloc_ok;
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if (bfd_is_und_section (symbol->section)
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&& output_bfd == NULL)
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ret = bfd_reloc_undefined;
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if (bfd_is_com_section (symbol->section)
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|| output_bfd != NULL)
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relocation = 0;
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else
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relocation = symbol->value;
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/* Only do this for a final link. */
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if (output_bfd == NULL)
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{
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relocation += symbol->section->output_section->vma;
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relocation += symbol->section->output_offset;
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}
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relocation += reloc_entry->addend;
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inplace_address = (bfd_byte *) data + reloc_entry->address;
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#define DOIT(x) \
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x = ( (x & ~reloc_entry->howto->dst_mask) | \
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(((x & reloc_entry->howto->src_mask) + relocation) & \
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reloc_entry->howto->dst_mask))
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switch (reloc_entry->howto->size)
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{
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case 1:
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{
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short x = bfd_get_16 (input_bfd, inplace_address);
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DOIT (x);
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bfd_put_16 (input_bfd, (bfd_vma) x, inplace_address);
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}
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break;
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case 2:
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{
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unsigned long x = bfd_get_32 (input_bfd, inplace_address);
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DOIT (x);
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bfd_put_32 (input_bfd, (bfd_vma)x , inplace_address);
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}
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break;
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default:
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BFD_ASSERT (0);
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}
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if (output_bfd != NULL)
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reloc_entry->address += input_section->output_offset;
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return ret;
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}
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/* Handle the R_M32R_SDA16 reloc.
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This reloc is used to compute the address of objects in the small data area
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and to perform loads and stores from that area.
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The lower 16 bits are sign extended and added to the register specified
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in the instruction, which is assumed to point to _SDA_BASE_. */
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static bfd_reloc_status_type
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m32r_elf_sda16_reloc (bfd *abfd ATTRIBUTE_UNUSED,
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arelent *reloc_entry,
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asymbol *symbol,
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void * data ATTRIBUTE_UNUSED,
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asection *input_section,
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bfd *output_bfd,
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char **error_message ATTRIBUTE_UNUSED)
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{
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/* This part is from bfd_elf_generic_reloc. */
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if (output_bfd != NULL
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&& (symbol->flags & BSF_SECTION_SYM) == 0
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&& (! reloc_entry->howto->partial_inplace
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|| reloc_entry->addend == 0))
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{
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reloc_entry->address += input_section->output_offset;
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return bfd_reloc_ok;
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}
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if (output_bfd != NULL)
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/* FIXME: See bfd_perform_relocation. Is this right? */
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return bfd_reloc_continue;
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/* FIXME: not sure what to do here yet. But then again, the linker
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may never call us. */
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abort ();
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}
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/* Handle the R_M32R_HI16_[SU]LO relocs.
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HI16_SLO is for the add3 and load/store with displacement instructions.
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HI16_ULO is for the or3 instruction.
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For R_M32R_HI16_SLO, the lower 16 bits are sign extended when added to
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the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then
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we must add one to the high 16 bytes (which will get subtracted off when
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the low 16 bits are added).
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These relocs have to be done in combination with an R_M32R_LO16 reloc
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because there is a carry from the LO16 to the HI16. Here we just save
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the information we need; we do the actual relocation when we see the LO16.
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This code is copied from the elf32-mips.c. We also support an arbitrary
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number of HI16 relocs to be associated with a single LO16 reloc. The
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assembler sorts the relocs to ensure each HI16 immediately precedes its
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LO16. However if there are multiple copies, the assembler may not find
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the real LO16 so it picks the first one it finds. */
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struct m32r_hi16
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{
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struct m32r_hi16 *next;
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bfd_byte *addr;
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bfd_vma addend;
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};
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/* FIXME: This should not be a static variable. */
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static struct m32r_hi16 *m32r_hi16_list;
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static bfd_reloc_status_type
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m32r_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED,
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arelent *reloc_entry,
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asymbol *symbol,
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void * data,
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asection *input_section,
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bfd *output_bfd,
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char **error_message ATTRIBUTE_UNUSED)
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{
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bfd_reloc_status_type ret;
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bfd_vma relocation;
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struct m32r_hi16 *n;
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/* This part is from bfd_elf_generic_reloc.
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If we're relocating, and this an external symbol, we don't want
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to change anything. */
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if (output_bfd != NULL
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&& (symbol->flags & BSF_SECTION_SYM) == 0
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&& reloc_entry->addend == 0)
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{
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reloc_entry->address += input_section->output_offset;
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return bfd_reloc_ok;
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}
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/* Sanity check the address (offset in section). */
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if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
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return bfd_reloc_outofrange;
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ret = bfd_reloc_ok;
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if (bfd_is_und_section (symbol->section)
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&& output_bfd == NULL)
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ret = bfd_reloc_undefined;
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if (bfd_is_com_section (symbol->section))
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relocation = 0;
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else
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relocation = symbol->value;
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relocation += symbol->section->output_section->vma;
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relocation += symbol->section->output_offset;
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relocation += reloc_entry->addend;
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/* Save the information, and let LO16 do the actual relocation. */
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n = bfd_malloc ((bfd_size_type) sizeof *n);
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if (n == NULL)
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return bfd_reloc_outofrange;
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n->addr = (bfd_byte *) data + reloc_entry->address;
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n->addend = relocation;
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n->next = m32r_hi16_list;
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m32r_hi16_list = n;
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if (output_bfd != NULL)
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reloc_entry->address += input_section->output_offset;
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return ret;
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}
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/* Handle an M32R ELF HI16 reloc. */
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static void
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m32r_elf_relocate_hi16 (bfd *input_bfd,
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int type,
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Elf_Internal_Rela *relhi,
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Elf_Internal_Rela *rello,
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bfd_byte *contents,
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bfd_vma addend)
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{
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unsigned long insn;
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bfd_vma addlo;
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insn = bfd_get_32 (input_bfd, contents + relhi->r_offset);
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addlo = bfd_get_32 (input_bfd, contents + rello->r_offset);
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if (type == R_M32R_HI16_SLO)
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addlo = ((addlo & 0xffff) ^ 0x8000) - 0x8000;
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else
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addlo &= 0xffff;
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addend += ((insn & 0xffff) << 16) + addlo;
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/* Reaccount for sign extension of low part. */
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if (type == R_M32R_HI16_SLO
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&& (addend & 0x8000) != 0)
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addend += 0x10000;
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bfd_put_32 (input_bfd,
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(insn & 0xffff0000) | ((addend >> 16) & 0xffff),
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contents + relhi->r_offset);
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}
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/* Do an R_M32R_LO16 relocation. This is a straightforward 16 bit
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inplace relocation; this function exists in order to do the
|
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R_M32R_HI16_[SU]LO relocation described above. */
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|
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static bfd_reloc_status_type
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m32r_elf_lo16_reloc (bfd *input_bfd,
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arelent *reloc_entry,
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asymbol *symbol,
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void * data,
|
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asection *input_section,
|
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bfd *output_bfd,
|
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char **error_message)
|
||
{
|
||
/* This part is from bfd_elf_generic_reloc.
|
||
If we're relocating, and this an external symbol, we don't want
|
||
to change anything. */
|
||
if (output_bfd != NULL
|
||
&& (symbol->flags & BSF_SECTION_SYM) == 0
|
||
&& reloc_entry->addend == 0)
|
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{
|
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reloc_entry->address += input_section->output_offset;
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return bfd_reloc_ok;
|
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}
|
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|
||
if (m32r_hi16_list != NULL)
|
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{
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struct m32r_hi16 *l;
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l = m32r_hi16_list;
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||
while (l != NULL)
|
||
{
|
||
unsigned long insn;
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||
unsigned long val;
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||
unsigned long vallo;
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struct m32r_hi16 *next;
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||
|
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/* Do the HI16 relocation. Note that we actually don't need
|
||
to know anything about the LO16 itself, except where to
|
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find the low 16 bits of the addend needed by the LO16. */
|
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insn = bfd_get_32 (input_bfd, l->addr);
|
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vallo = ((bfd_get_32 (input_bfd, (bfd_byte *) data + reloc_entry->address)
|
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& 0xffff) ^ 0x8000) - 0x8000;
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val = ((insn & 0xffff) << 16) + vallo;
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val += l->addend;
|
||
|
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/* Reaccount for sign extension of low part. */
|
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if ((val & 0x8000) != 0)
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val += 0x10000;
|
||
|
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insn = (insn &~ (bfd_vma) 0xffff) | ((val >> 16) & 0xffff);
|
||
bfd_put_32 (input_bfd, (bfd_vma) insn, l->addr);
|
||
|
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next = l->next;
|
||
free (l);
|
||
l = next;
|
||
}
|
||
|
||
m32r_hi16_list = NULL;
|
||
}
|
||
|
||
/* Now do the LO16 reloc in the usual way.
|
||
??? It would be nice to call bfd_elf_generic_reloc here,
|
||
but we have partial_inplace set. bfd_elf_generic_reloc will
|
||
pass the handling back to bfd_install_relocation which will install
|
||
a section relative addend which is wrong. */
|
||
return m32r_elf_generic_reloc (input_bfd, reloc_entry, symbol, data,
|
||
input_section, output_bfd, error_message);
|
||
}
|
||
|
||
|
||
static reloc_howto_type m32r_elf_howto_table[] =
|
||
{
|
||
/* This reloc does nothing. */
|
||
HOWTO (R_M32R_NONE, /* type */
|
||
0, /* rightshift */
|
||
3, /* size (0 = byte, 1 = short, 2 = long) */
|
||
0, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_M32R_NONE", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* A 16 bit absolute relocation. */
|
||
HOWTO (R_M32R_16, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
m32r_elf_generic_reloc,/* special_function */
|
||
"R_M32R_16", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0xffff, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* A 32 bit absolute relocation. */
|
||
HOWTO (R_M32R_32, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
m32r_elf_generic_reloc,/* special_function */
|
||
"R_M32R_32", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* A 24 bit address. */
|
||
HOWTO (R_M32R_24, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
24, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_unsigned, /* complain_on_overflow */
|
||
m32r_elf_generic_reloc,/* special_function */
|
||
"R_M32R_24", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0xffffff, /* src_mask */
|
||
0xffffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* An PC Relative 10-bit relocation, shifted by 2.
|
||
This reloc is complicated because relocations are relative to pc & -4.
|
||
i.e. branches in the right insn slot use the address of the left insn
|
||
slot for pc. */
|
||
/* ??? It's not clear whether this should have partial_inplace set or not.
|
||
Branch relaxing in the assembler can store the addend in the insn,
|
||
and if bfd_install_relocation gets called the addend may get added
|
||
again. */
|
||
HOWTO (R_M32R_10_PCREL, /* type */
|
||
2, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
10, /* bitsize */
|
||
TRUE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
m32r_elf_10_pcrel_reloc, /* special_function */
|
||
"R_M32R_10_PCREL", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0xff, /* src_mask */
|
||
0xff, /* dst_mask */
|
||
TRUE), /* pcrel_offset */
|
||
|
||
/* A relative 18 bit relocation, right shifted by 2. */
|
||
HOWTO (R_M32R_18_PCREL, /* type */
|
||
2, /* rightshift */
|
||
2, /* 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 */
|
||
"R_M32R_18_PCREL", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0xffff, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
TRUE), /* pcrel_offset */
|
||
|
||
/* A relative 26 bit relocation, right shifted by 2. */
|
||
/* ??? It's not clear whether this should have partial_inplace set or not.
|
||
Branch relaxing in the assembler can store the addend in the insn,
|
||
and if bfd_install_relocation gets called the addend may get added
|
||
again. */
|
||
HOWTO (R_M32R_26_PCREL, /* type */
|
||
2, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
26, /* bitsize */
|
||
TRUE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_M32R_26_PCREL", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0xffffff, /* src_mask */
|
||
0xffffff, /* dst_mask */
|
||
TRUE), /* pcrel_offset */
|
||
|
||
/* High 16 bits of address when lower 16 is or'd in. */
|
||
HOWTO (R_M32R_HI16_ULO, /* type */
|
||
16, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
m32r_elf_hi16_reloc, /* special_function */
|
||
"R_M32R_HI16_ULO", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* High 16 bits of address when lower 16 is added in. */
|
||
HOWTO (R_M32R_HI16_SLO, /* type */
|
||
16, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
m32r_elf_hi16_reloc, /* special_function */
|
||
"R_M32R_HI16_SLO", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Lower 16 bits of address. */
|
||
HOWTO (R_M32R_LO16, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
m32r_elf_lo16_reloc, /* special_function */
|
||
"R_M32R_LO16", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Small data area 16 bits offset. */
|
||
HOWTO (R_M32R_SDA16, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
m32r_elf_sda16_reloc, /* special_function */
|
||
"R_M32R_SDA16", /* name */
|
||
TRUE, /* partial_inplace */ /* FIXME: correct? */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* GNU extension to record C++ vtable hierarchy. */
|
||
HOWTO (R_M32R_GNU_VTINHERIT, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
0, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
NULL, /* special_function */
|
||
"R_M32R_GNU_VTINHERIT", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* GNU extension to record C++ vtable member usage. */
|
||
HOWTO (R_M32R_GNU_VTENTRY, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
0, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
_bfd_elf_rel_vtable_reloc_fn, /* special_function */
|
||
"R_M32R_GNU_VTENTRY", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
EMPTY_HOWTO (13),
|
||
EMPTY_HOWTO (14),
|
||
EMPTY_HOWTO (15),
|
||
EMPTY_HOWTO (16),
|
||
EMPTY_HOWTO (17),
|
||
EMPTY_HOWTO (18),
|
||
EMPTY_HOWTO (19),
|
||
EMPTY_HOWTO (20),
|
||
EMPTY_HOWTO (21),
|
||
EMPTY_HOWTO (22),
|
||
EMPTY_HOWTO (23),
|
||
EMPTY_HOWTO (24),
|
||
EMPTY_HOWTO (25),
|
||
EMPTY_HOWTO (26),
|
||
EMPTY_HOWTO (27),
|
||
EMPTY_HOWTO (28),
|
||
EMPTY_HOWTO (29),
|
||
EMPTY_HOWTO (30),
|
||
EMPTY_HOWTO (31),
|
||
EMPTY_HOWTO (32),
|
||
|
||
/* A 16 bit absolute relocation. */
|
||
HOWTO (R_M32R_16_RELA, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_M32R_16_RELA", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0xffff, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* A 32 bit absolute relocation. */
|
||
HOWTO (R_M32R_32_RELA, /* 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 */
|
||
"R_M32R_32_RELA", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* A 24 bit address. */
|
||
HOWTO (R_M32R_24_RELA, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
24, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_unsigned, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc,/* special_function */
|
||
"R_M32R_24_RELA", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0xffffff, /* src_mask */
|
||
0xffffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
HOWTO (R_M32R_10_PCREL_RELA, /* type */
|
||
2, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
10, /* bitsize */
|
||
TRUE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
m32r_elf_10_pcrel_reloc, /* special_function */
|
||
"R_M32R_10_PCREL_RELA",/* name */
|
||
FALSE, /* partial_inplace */
|
||
0xff, /* src_mask */
|
||
0xff, /* dst_mask */
|
||
TRUE), /* pcrel_offset */
|
||
|
||
/* A relative 18 bit relocation, right shifted by 2. */
|
||
HOWTO (R_M32R_18_PCREL_RELA, /* type */
|
||
2, /* rightshift */
|
||
2, /* 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 */
|
||
"R_M32R_18_PCREL_RELA",/* name */
|
||
FALSE, /* partial_inplace */
|
||
0xffff, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
TRUE), /* pcrel_offset */
|
||
|
||
/* A relative 26 bit relocation, right shifted by 2. */
|
||
HOWTO (R_M32R_26_PCREL_RELA, /* type */
|
||
2, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
26, /* bitsize */
|
||
TRUE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_M32R_26_PCREL_RELA",/* name */
|
||
FALSE, /* partial_inplace */
|
||
0xffffff, /* src_mask */
|
||
0xffffff, /* dst_mask */
|
||
TRUE), /* pcrel_offset */
|
||
|
||
/* High 16 bits of address when lower 16 is or'd in. */
|
||
HOWTO (R_M32R_HI16_ULO_RELA, /* type */
|
||
16, /* rightshift */
|
||
2, /* 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 */
|
||
"R_M32R_HI16_ULO_RELA",/* name */
|
||
FALSE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* High 16 bits of address when lower 16 is added in. */
|
||
HOWTO (R_M32R_HI16_SLO_RELA, /* type */
|
||
16, /* rightshift */
|
||
2, /* 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 */
|
||
"R_M32R_HI16_SLO_RELA",/* name */
|
||
FALSE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Lower 16 bits of address. */
|
||
HOWTO (R_M32R_LO16_RELA, /* type */
|
||
0, /* rightshift */
|
||
2, /* 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 */
|
||
"R_M32R_LO16_RELA", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Small data area 16 bits offset. */
|
||
HOWTO (R_M32R_SDA16_RELA, /* type */
|
||
0, /* rightshift */
|
||
2, /* 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 */
|
||
"R_M32R_SDA16_RELA", /* name */
|
||
TRUE, /* partial_inplace */ /* FIXME: correct? */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* GNU extension to record C++ vtable hierarchy. */
|
||
HOWTO (R_M32R_RELA_GNU_VTINHERIT, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
0, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
NULL, /* special_function */
|
||
"R_M32R_RELA_GNU_VTINHERIT", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* GNU extension to record C++ vtable member usage. */
|
||
HOWTO (R_M32R_RELA_GNU_VTENTRY, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
0, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
_bfd_elf_rel_vtable_reloc_fn, /* special_function */
|
||
"R_M32R_RELA_GNU_VTENTRY", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* A 32 bit PC relative relocation. */
|
||
HOWTO (R_M32R_REL32, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
TRUE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc,/* special_function */
|
||
"R_M32R_REL32", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
TRUE), /* pcrel_offset */
|
||
|
||
EMPTY_HOWTO (46),
|
||
EMPTY_HOWTO (47),
|
||
|
||
/* Like R_M32R_24, but referring to the GOT table entry for
|
||
the symbol. */
|
||
HOWTO (R_M32R_GOT24, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
24, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_unsigned, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_M32R_GOT24", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0xffffff, /* src_mask */
|
||
0xffffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like R_M32R_PCREL, but referring to the procedure linkage table
|
||
entry for the symbol. */
|
||
HOWTO (R_M32R_26_PLTREL, /* type */
|
||
2, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
24, /* bitsize */
|
||
TRUE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_M32R_26_PLTREL", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0xffffff, /* src_mask */
|
||
0xffffff, /* dst_mask */
|
||
TRUE), /* pcrel_offset */
|
||
|
||
/* This is used only by the dynamic linker. The symbol should exist
|
||
both in the object being run and in some shared library. The
|
||
dynamic linker copies the data addressed by the symbol from the
|
||
shared library into the object, because the object being
|
||
run has to have the data at some particular address. */
|
||
HOWTO (R_M32R_COPY, /* 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 */
|
||
"R_M32R_COPY", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like R_M32R_24, but used when setting global offset table
|
||
entries. */
|
||
HOWTO (R_M32R_GLOB_DAT, /* 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 */
|
||
"R_M32R_GLOB_DAT", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Marks a procedure linkage table entry for a symbol. */
|
||
HOWTO (R_M32R_JMP_SLOT, /* 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 */
|
||
"R_M32R_JMP_SLOT", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Used only by the dynamic linker. When the object is run, this
|
||
longword is set to the load address of the object, plus the
|
||
addend. */
|
||
HOWTO (R_M32R_RELATIVE, /* 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 */
|
||
"R_M32R_RELATIVE", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
HOWTO (R_M32R_GOTOFF, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
24, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_M32R_GOTOFF", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0xffffff, /* src_mask */
|
||
0xffffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* An PC Relative 24-bit relocation used when setting PIC offset
|
||
table register. */
|
||
HOWTO (R_M32R_GOTPC24, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
24, /* bitsize */
|
||
TRUE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_unsigned, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_M32R_GOTPC24", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0xffffff, /* src_mask */
|
||
0xffffff, /* dst_mask */
|
||
TRUE), /* pcrel_offset */
|
||
|
||
/* Like R_M32R_HI16_ULO, but referring to the GOT table entry for
|
||
the symbol. */
|
||
HOWTO (R_M32R_GOT16_HI_ULO, /* type */
|
||
16, /* rightshift */
|
||
2, /* 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 */
|
||
"R_M32R_GOT16_HI_ULO", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like R_M32R_HI16_SLO, but referring to the GOT table entry for
|
||
the symbol. */
|
||
HOWTO (R_M32R_GOT16_HI_SLO, /* type */
|
||
16, /* rightshift */
|
||
2, /* 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 */
|
||
"R_M32R_GOT16_HI_SLO", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Like R_M32R_LO16, but referring to the GOT table entry for
|
||
the symbol. */
|
||
HOWTO (R_M32R_GOT16_LO, /* type */
|
||
0, /* rightshift */
|
||
2, /* 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 */
|
||
"R_M32R_GOT16_LO", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* An PC Relative relocation used when setting PIC offset table register.
|
||
Like R_M32R_HI16_ULO, but referring to the GOT table entry for
|
||
the symbol. */
|
||
HOWTO (R_M32R_GOTPC_HI_ULO, /* type */
|
||
16, /* rightshift */
|
||
2, /* 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 */
|
||
"R_M32R_GOTPC_HI_ULO", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
TRUE), /* pcrel_offset */
|
||
|
||
/* An PC Relative relocation used when setting PIC offset table register.
|
||
Like R_M32R_HI16_SLO, but referring to the GOT table entry for
|
||
the symbol. */
|
||
HOWTO (R_M32R_GOTPC_HI_SLO, /* type */
|
||
16, /* rightshift */
|
||
2, /* 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 */
|
||
"R_M32R_GOTPC_HI_SLO", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
TRUE), /* pcrel_offset */
|
||
|
||
/* An PC Relative relocation used when setting PIC offset table register.
|
||
Like R_M32R_LO16, but referring to the GOT table entry for
|
||
the symbol. */
|
||
HOWTO (R_M32R_GOTPC_LO, /* type */
|
||
0, /* rightshift */
|
||
2, /* 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 */
|
||
"R_M32R_GOTPC_LO", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
TRUE), /* pcrel_offset */
|
||
|
||
HOWTO (R_M32R_GOTOFF_HI_ULO, /* type */
|
||
16, /* rightshift */
|
||
2, /* 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 */
|
||
"R_M32R_GOTOFF_HI_ULO",/* name */
|
||
FALSE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
HOWTO (R_M32R_GOTOFF_HI_SLO, /* type */
|
||
16, /* rightshift */
|
||
2, /* 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 */
|
||
"R_M32R_GOTOFF_HI_SLO",/* name */
|
||
FALSE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
HOWTO (R_M32R_GOTOFF_LO, /* type */
|
||
0, /* rightshift */
|
||
2, /* 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 */
|
||
"R_M32R_GOTOFF_LO", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
};
|
||
|
||
/* Map BFD reloc types to M32R ELF reloc types. */
|
||
|
||
struct m32r_reloc_map
|
||
{
|
||
bfd_reloc_code_real_type bfd_reloc_val;
|
||
unsigned char elf_reloc_val;
|
||
};
|
||
|
||
#ifdef USE_M32R_OLD_RELOC
|
||
static const struct m32r_reloc_map m32r_reloc_map_old[] =
|
||
{
|
||
{ BFD_RELOC_NONE, R_M32R_NONE },
|
||
{ BFD_RELOC_16, R_M32R_16 },
|
||
{ BFD_RELOC_32, R_M32R_32 },
|
||
{ BFD_RELOC_M32R_24, R_M32R_24 },
|
||
{ BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL },
|
||
{ BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL },
|
||
{ BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL },
|
||
{ BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO },
|
||
{ BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO },
|
||
{ BFD_RELOC_M32R_LO16, R_M32R_LO16 },
|
||
{ BFD_RELOC_M32R_SDA16, R_M32R_SDA16 },
|
||
{ BFD_RELOC_VTABLE_INHERIT, R_M32R_GNU_VTINHERIT },
|
||
{ BFD_RELOC_VTABLE_ENTRY, R_M32R_GNU_VTENTRY },
|
||
};
|
||
#else
|
||
static const struct m32r_reloc_map m32r_reloc_map[] =
|
||
{
|
||
{ BFD_RELOC_NONE, R_M32R_NONE },
|
||
{ BFD_RELOC_16, R_M32R_16_RELA },
|
||
{ BFD_RELOC_32, R_M32R_32_RELA },
|
||
{ BFD_RELOC_M32R_24, R_M32R_24_RELA },
|
||
{ BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL_RELA },
|
||
{ BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL_RELA },
|
||
{ BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL_RELA },
|
||
{ BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO_RELA },
|
||
{ BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO_RELA },
|
||
{ BFD_RELOC_M32R_LO16, R_M32R_LO16_RELA },
|
||
{ BFD_RELOC_M32R_SDA16, R_M32R_SDA16_RELA },
|
||
{ BFD_RELOC_VTABLE_INHERIT, R_M32R_RELA_GNU_VTINHERIT },
|
||
{ BFD_RELOC_VTABLE_ENTRY, R_M32R_RELA_GNU_VTENTRY },
|
||
{ BFD_RELOC_32_PCREL, R_M32R_REL32 },
|
||
|
||
{ BFD_RELOC_M32R_GOT24, R_M32R_GOT24 },
|
||
{ BFD_RELOC_M32R_26_PLTREL, R_M32R_26_PLTREL },
|
||
{ BFD_RELOC_M32R_COPY, R_M32R_COPY },
|
||
{ BFD_RELOC_M32R_GLOB_DAT, R_M32R_GLOB_DAT },
|
||
{ BFD_RELOC_M32R_JMP_SLOT, R_M32R_JMP_SLOT },
|
||
{ BFD_RELOC_M32R_RELATIVE, R_M32R_RELATIVE },
|
||
{ BFD_RELOC_M32R_GOTOFF, R_M32R_GOTOFF },
|
||
{ BFD_RELOC_M32R_GOTPC24, R_M32R_GOTPC24 },
|
||
{ BFD_RELOC_M32R_GOT16_HI_ULO, R_M32R_GOT16_HI_ULO },
|
||
{ BFD_RELOC_M32R_GOT16_HI_SLO, R_M32R_GOT16_HI_SLO },
|
||
{ BFD_RELOC_M32R_GOT16_LO, R_M32R_GOT16_LO },
|
||
{ BFD_RELOC_M32R_GOTPC_HI_ULO, R_M32R_GOTPC_HI_ULO },
|
||
{ BFD_RELOC_M32R_GOTPC_HI_SLO, R_M32R_GOTPC_HI_SLO },
|
||
{ BFD_RELOC_M32R_GOTPC_LO, R_M32R_GOTPC_LO },
|
||
{ BFD_RELOC_M32R_GOTOFF_HI_ULO, R_M32R_GOTOFF_HI_ULO },
|
||
{ BFD_RELOC_M32R_GOTOFF_HI_SLO, R_M32R_GOTOFF_HI_SLO },
|
||
{ BFD_RELOC_M32R_GOTOFF_LO, R_M32R_GOTOFF_LO },
|
||
};
|
||
#endif
|
||
|
||
static reloc_howto_type *
|
||
bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
||
bfd_reloc_code_real_type code)
|
||
{
|
||
unsigned int i;
|
||
|
||
#ifdef USE_M32R_OLD_RELOC
|
||
for (i = 0;
|
||
i < sizeof (m32r_reloc_map_old) / sizeof (struct m32r_reloc_map);
|
||
i++)
|
||
if (m32r_reloc_map_old[i].bfd_reloc_val == code)
|
||
return &m32r_elf_howto_table[m32r_reloc_map_old[i].elf_reloc_val];
|
||
|
||
#else /* ! USE_M32R_OLD_RELOC */
|
||
|
||
for (i = 0;
|
||
i < sizeof (m32r_reloc_map) / sizeof (struct m32r_reloc_map);
|
||
i++)
|
||
if (m32r_reloc_map[i].bfd_reloc_val == code)
|
||
return &m32r_elf_howto_table[m32r_reloc_map[i].elf_reloc_val];
|
||
#endif
|
||
|
||
return NULL;
|
||
}
|
||
|
||
static reloc_howto_type *
|
||
bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
||
const char *r_name)
|
||
{
|
||
unsigned int i;
|
||
|
||
for (i = 0;
|
||
i < sizeof (m32r_elf_howto_table) / sizeof (m32r_elf_howto_table[0]);
|
||
i++)
|
||
if (m32r_elf_howto_table[i].name != NULL
|
||
&& strcasecmp (m32r_elf_howto_table[i].name, r_name) == 0)
|
||
return &m32r_elf_howto_table[i];
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/* Set the howto pointer for an M32R ELF reloc. */
|
||
|
||
static void
|
||
m32r_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
|
||
arelent *cache_ptr,
|
||
Elf_Internal_Rela *dst)
|
||
{
|
||
unsigned int r_type;
|
||
|
||
r_type = ELF32_R_TYPE (dst->r_info);
|
||
if (r_type > (unsigned int) R_M32R_GNU_VTENTRY)
|
||
{
|
||
/* xgettext:c-format */
|
||
_bfd_error_handler (_("%B: invalid M32R reloc number: %d"), abfd, r_type);
|
||
r_type = 0;
|
||
}
|
||
cache_ptr->howto = &m32r_elf_howto_table[r_type];
|
||
}
|
||
|
||
static void
|
||
m32r_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
|
||
arelent *cache_ptr,
|
||
Elf_Internal_Rela *dst)
|
||
{
|
||
BFD_ASSERT ((ELF32_R_TYPE(dst->r_info) == (unsigned int) R_M32R_NONE)
|
||
|| ((ELF32_R_TYPE(dst->r_info) > (unsigned int) R_M32R_GNU_VTENTRY)
|
||
&& (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_M32R_max)));
|
||
cache_ptr->howto = &m32r_elf_howto_table[ELF32_R_TYPE(dst->r_info)];
|
||
}
|
||
|
||
|
||
/* Given a BFD section, try to locate the corresponding ELF section
|
||
index. */
|
||
|
||
static bfd_boolean
|
||
_bfd_m32r_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
|
||
asection *sec,
|
||
int *retval)
|
||
{
|
||
if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
|
||
{
|
||
*retval = SHN_M32R_SCOMMON;
|
||
return TRUE;
|
||
}
|
||
return FALSE;
|
||
}
|
||
|
||
/* M32R ELF uses two common sections. One is the usual one, and the other
|
||
is for small objects. All the small objects are kept together, and then
|
||
referenced via one register, which yields faster assembler code. It is
|
||
up to the compiler to emit an instruction to load the register with
|
||
_SDA_BASE. This is what we use for the small common section. This
|
||
approach is copied from elf32-mips.c. */
|
||
static asection m32r_elf_scom_section;
|
||
static asymbol m32r_elf_scom_symbol;
|
||
static asymbol *m32r_elf_scom_symbol_ptr;
|
||
|
||
/* Handle the special M32R section numbers that a symbol may use. */
|
||
|
||
static void
|
||
_bfd_m32r_elf_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym)
|
||
{
|
||
elf_symbol_type *elfsym = (elf_symbol_type *) asym;
|
||
|
||
switch (elfsym->internal_elf_sym.st_shndx)
|
||
{
|
||
case SHN_M32R_SCOMMON:
|
||
if (m32r_elf_scom_section.name == NULL)
|
||
{
|
||
/* Initialize the small common section. */
|
||
m32r_elf_scom_section.name = ".scommon";
|
||
m32r_elf_scom_section.flags = SEC_IS_COMMON;
|
||
m32r_elf_scom_section.output_section = &m32r_elf_scom_section;
|
||
m32r_elf_scom_section.symbol = &m32r_elf_scom_symbol;
|
||
m32r_elf_scom_section.symbol_ptr_ptr = &m32r_elf_scom_symbol_ptr;
|
||
m32r_elf_scom_symbol.name = ".scommon";
|
||
m32r_elf_scom_symbol.flags = BSF_SECTION_SYM;
|
||
m32r_elf_scom_symbol.section = &m32r_elf_scom_section;
|
||
m32r_elf_scom_symbol_ptr = &m32r_elf_scom_symbol;
|
||
}
|
||
asym->section = &m32r_elf_scom_section;
|
||
asym->value = elfsym->internal_elf_sym.st_size;
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Hook called by the linker routine which adds symbols from an object
|
||
file. We must handle the special M32R section numbers here.
|
||
We also keep watching for whether we need to create the sdata special
|
||
linker sections. */
|
||
|
||
static bfd_boolean
|
||
m32r_elf_add_symbol_hook (bfd *abfd,
|
||
struct bfd_link_info *info,
|
||
Elf_Internal_Sym *sym,
|
||
const char **namep,
|
||
flagword *flagsp ATTRIBUTE_UNUSED,
|
||
asection **secp,
|
||
bfd_vma *valp)
|
||
{
|
||
if (! bfd_link_relocatable (info)
|
||
&& (*namep)[0] == '_' && (*namep)[1] == 'S'
|
||
&& strcmp (*namep, "_SDA_BASE_") == 0
|
||
&& is_elf_hash_table (info->hash))
|
||
{
|
||
/* This is simpler than using _bfd_elf_create_linker_section
|
||
(our needs are simpler than ppc's needs). Also
|
||
_bfd_elf_create_linker_section currently has a bug where if a .sdata
|
||
section already exists a new one is created that follows it which
|
||
screws of _SDA_BASE_ address calcs because output_offset != 0. */
|
||
struct elf_link_hash_entry *h;
|
||
struct bfd_link_hash_entry *bh;
|
||
asection *s = bfd_get_section_by_name (abfd, ".sdata");
|
||
|
||
/* The following code was cobbled from elf32-ppc.c and elflink.c. */
|
||
if (s == NULL)
|
||
{
|
||
flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
|
||
| SEC_IN_MEMORY | SEC_LINKER_CREATED);
|
||
|
||
s = bfd_make_section_anyway_with_flags (abfd, ".sdata",
|
||
flags);
|
||
if (s == NULL)
|
||
return FALSE;
|
||
if (! bfd_set_section_alignment (abfd, s, 2))
|
||
return FALSE;
|
||
}
|
||
|
||
bh = bfd_link_hash_lookup (info->hash, "_SDA_BASE_",
|
||
FALSE, FALSE, FALSE);
|
||
|
||
if ((bh == NULL || bh->type == bfd_link_hash_undefined)
|
||
&& !(_bfd_generic_link_add_one_symbol (info,
|
||
abfd,
|
||
"_SDA_BASE_",
|
||
BSF_GLOBAL,
|
||
s,
|
||
(bfd_vma) 32768,
|
||
NULL,
|
||
FALSE,
|
||
get_elf_backend_data (abfd)->collect,
|
||
&bh)))
|
||
return FALSE;
|
||
h = (struct elf_link_hash_entry *) bh;
|
||
h->type = STT_OBJECT;
|
||
}
|
||
|
||
switch (sym->st_shndx)
|
||
{
|
||
case SHN_M32R_SCOMMON:
|
||
*secp = bfd_make_section_old_way (abfd, ".scommon");
|
||
(*secp)->flags |= SEC_IS_COMMON;
|
||
*valp = sym->st_size;
|
||
break;
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* We have to figure out the SDA_BASE value, so that we can adjust the
|
||
symbol value correctly. We look up the symbol _SDA_BASE_ in the output
|
||
BFD. If we can't find it, we're stuck. We cache it in the ELF
|
||
target data. We don't need to adjust the symbol value for an
|
||
external symbol if we are producing relocatable output. */
|
||
|
||
static bfd_reloc_status_type
|
||
m32r_elf_final_sda_base (bfd *output_bfd,
|
||
struct bfd_link_info *info,
|
||
const char **error_message,
|
||
bfd_vma *psb)
|
||
{
|
||
if (elf_gp (output_bfd) == 0)
|
||
{
|
||
struct bfd_link_hash_entry *h;
|
||
|
||
h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE);
|
||
if (h != NULL && h->type == bfd_link_hash_defined)
|
||
elf_gp (output_bfd) = (h->u.def.value
|
||
+ h->u.def.section->output_section->vma
|
||
+ h->u.def.section->output_offset);
|
||
else
|
||
{
|
||
/* Only get the error once. */
|
||
*psb = elf_gp (output_bfd) = 4;
|
||
*error_message =
|
||
(const char *) _("SDA relocation when _SDA_BASE_ not defined");
|
||
return bfd_reloc_dangerous;
|
||
}
|
||
}
|
||
*psb = elf_gp (output_bfd);
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
/* Return size of a PLT entry. */
|
||
#define elf_m32r_sizeof_plt(info) PLT_ENTRY_SIZE
|
||
|
||
/* The m32r linker needs to keep track of the number of relocs that it
|
||
decides to copy in check_relocs for each symbol. This is so that
|
||
it can discard PC relative relocs if it doesn't need them when
|
||
linking with -Bsymbolic. We store the information in a field
|
||
extending the regular ELF linker hash table. */
|
||
|
||
/* This structure keeps track of the number of PC relative relocs we
|
||
have copied for a given symbol. */
|
||
|
||
struct elf_m32r_pcrel_relocs_copied
|
||
{
|
||
/* Next section. */
|
||
struct elf_m32r_pcrel_relocs_copied *next;
|
||
/* A section in dynobj. */
|
||
asection *section;
|
||
/* Number of relocs copied in this section. */
|
||
bfd_size_type count;
|
||
};
|
||
|
||
/* The sh linker needs to keep track of the number of relocs that it
|
||
decides to copy as dynamic relocs in check_relocs for each symbol.
|
||
This is so that it can later discard them if they are found to be
|
||
unnecessary. We store the information in a field extending the
|
||
regular ELF linker hash table. */
|
||
|
||
struct elf_m32r_dyn_relocs
|
||
{
|
||
struct elf_m32r_dyn_relocs *next;
|
||
|
||
/* The input section of the reloc. */
|
||
asection *sec;
|
||
|
||
/* Total number of relocs copied for the input section. */
|
||
bfd_size_type count;
|
||
|
||
/* Number of pc-relative relocs copied for the input section. */
|
||
bfd_size_type pc_count;
|
||
};
|
||
|
||
|
||
/* m32r ELF linker hash entry. */
|
||
|
||
struct elf_m32r_link_hash_entry
|
||
{
|
||
struct elf_link_hash_entry root;
|
||
|
||
/* Track dynamic relocs copied for this symbol. */
|
||
struct elf_m32r_dyn_relocs *dyn_relocs;
|
||
};
|
||
|
||
/* m32r ELF linker hash table. */
|
||
|
||
struct elf_m32r_link_hash_table
|
||
{
|
||
struct elf_link_hash_table root;
|
||
|
||
/* Short-cuts to get to dynamic linker sections. */
|
||
asection *sdynbss;
|
||
asection *srelbss;
|
||
|
||
/* Small local sym cache. */
|
||
struct sym_cache sym_cache;
|
||
};
|
||
|
||
/* Traverse an m32r ELF linker hash table. */
|
||
|
||
#define m32r_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 m32r ELF linker hash table from a link_info structure. */
|
||
|
||
#define m32r_elf_hash_table(p) \
|
||
(elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
|
||
== M32R_ELF_DATA ? ((struct elf_m32r_link_hash_table *) ((p)->hash)) : NULL)
|
||
|
||
/* Create an entry in an m32r ELF linker hash table. */
|
||
|
||
static struct bfd_hash_entry *
|
||
m32r_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
|
||
struct bfd_hash_table *table,
|
||
const char *string)
|
||
{
|
||
struct elf_m32r_link_hash_entry *ret =
|
||
(struct elf_m32r_link_hash_entry *) entry;
|
||
|
||
/* Allocate the structure if it has not already been allocated by a
|
||
subclass. */
|
||
if (ret == NULL)
|
||
ret = bfd_hash_allocate (table,
|
||
sizeof (struct elf_m32r_link_hash_entry));
|
||
if (ret == NULL)
|
||
return NULL;
|
||
|
||
/* Call the allocation method of the superclass. */
|
||
ret = ((struct elf_m32r_link_hash_entry *)
|
||
_bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
|
||
table, string));
|
||
if (ret != NULL)
|
||
{
|
||
struct elf_m32r_link_hash_entry *eh;
|
||
|
||
eh = (struct elf_m32r_link_hash_entry *) ret;
|
||
eh->dyn_relocs = NULL;
|
||
}
|
||
|
||
return (struct bfd_hash_entry *) ret;
|
||
}
|
||
|
||
/* Create an m32r ELF linker hash table. */
|
||
|
||
static struct bfd_link_hash_table *
|
||
m32r_elf_link_hash_table_create (bfd *abfd)
|
||
{
|
||
struct elf_m32r_link_hash_table *ret;
|
||
bfd_size_type amt = sizeof (struct elf_m32r_link_hash_table);
|
||
|
||
ret = bfd_zmalloc (amt);
|
||
if (ret == NULL)
|
||
return NULL;
|
||
|
||
if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
|
||
m32r_elf_link_hash_newfunc,
|
||
sizeof (struct elf_m32r_link_hash_entry),
|
||
M32R_ELF_DATA))
|
||
{
|
||
free (ret);
|
||
return NULL;
|
||
}
|
||
|
||
return &ret->root.root;
|
||
}
|
||
|
||
/* Create dynamic sections when linking against a dynamic object. */
|
||
|
||
static bfd_boolean
|
||
m32r_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
|
||
{
|
||
struct elf_m32r_link_hash_table *htab;
|
||
flagword flags, pltflags;
|
||
asection *s;
|
||
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
|
||
int ptralign = 2; /* 32bit */
|
||
|
||
htab = m32r_elf_hash_table (info);
|
||
if (htab == NULL)
|
||
return FALSE;
|
||
|
||
/* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
|
||
.rel[a].bss sections. */
|
||
flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
|
||
| SEC_LINKER_CREATED);
|
||
|
||
pltflags = flags;
|
||
pltflags |= SEC_CODE;
|
||
if (bed->plt_not_loaded)
|
||
pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
|
||
if (bed->plt_readonly)
|
||
pltflags |= SEC_READONLY;
|
||
|
||
s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags);
|
||
htab->root.splt = s;
|
||
if (s == NULL
|
||
|| ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
|
||
return FALSE;
|
||
|
||
if (bed->want_plt_sym)
|
||
{
|
||
/* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
|
||
.plt section. */
|
||
struct bfd_link_hash_entry *bh = NULL;
|
||
struct elf_link_hash_entry *h;
|
||
|
||
if (! (_bfd_generic_link_add_one_symbol
|
||
(info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
|
||
(bfd_vma) 0, NULL, FALSE,
|
||
get_elf_backend_data (abfd)->collect, &bh)))
|
||
return FALSE;
|
||
h = (struct elf_link_hash_entry *) bh;
|
||
h->def_regular = 1;
|
||
h->type = STT_OBJECT;
|
||
htab->root.hplt = h;
|
||
|
||
if (bfd_link_pic (info)
|
||
&& ! bfd_elf_link_record_dynamic_symbol (info, h))
|
||
return FALSE;
|
||
}
|
||
|
||
s = bfd_make_section_anyway_with_flags (abfd,
|
||
bed->default_use_rela_p
|
||
? ".rela.plt" : ".rel.plt",
|
||
flags | SEC_READONLY);
|
||
htab->root.srelplt = s;
|
||
if (s == NULL
|
||
|| ! bfd_set_section_alignment (abfd, s, ptralign))
|
||
return FALSE;
|
||
|
||
if (htab->root.sgot == NULL
|
||
&& !_bfd_elf_create_got_section (abfd, info))
|
||
return FALSE;
|
||
|
||
if (bed->want_dynbss)
|
||
{
|
||
/* The .dynbss section is a place to put symbols which are defined
|
||
by dynamic objects, are referenced by regular objects, and are
|
||
not functions. We must allocate space for them in the process
|
||
image and use a R_*_COPY reloc to tell the dynamic linker to
|
||
initialize them at run time. The linker script puts the .dynbss
|
||
section into the .bss section of the final image. */
|
||
s = bfd_make_section_anyway_with_flags (abfd, ".dynbss",
|
||
SEC_ALLOC | SEC_LINKER_CREATED);
|
||
htab->sdynbss = s;
|
||
if (s == NULL)
|
||
return FALSE;
|
||
/* The .rel[a].bss section holds copy relocs. This section is not
|
||
normally needed. We need to create it here, though, so that the
|
||
linker will map it to an output section. We can't just create it
|
||
only if we need it, because we will not know whether we need it
|
||
until we have seen all the input files, and the first time the
|
||
main linker code calls BFD after examining all the input files
|
||
(size_dynamic_sections) the input sections have already been
|
||
mapped to the output sections. If the section turns out not to
|
||
be needed, we can discard it later. We will never need this
|
||
section when generating a shared object, since they do not use
|
||
copy relocs. */
|
||
if (! bfd_link_pic (info))
|
||
{
|
||
s = bfd_make_section_anyway_with_flags (abfd,
|
||
(bed->default_use_rela_p
|
||
? ".rela.bss" : ".rel.bss"),
|
||
flags | SEC_READONLY);
|
||
htab->srelbss = s;
|
||
if (s == NULL
|
||
|| ! bfd_set_section_alignment (abfd, s, ptralign))
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Copy the extra info we tack onto an elf_link_hash_entry. */
|
||
|
||
static void
|
||
m32r_elf_copy_indirect_symbol (struct bfd_link_info *info,
|
||
struct elf_link_hash_entry *dir,
|
||
struct elf_link_hash_entry *ind)
|
||
{
|
||
struct elf_m32r_link_hash_entry * edir;
|
||
struct elf_m32r_link_hash_entry * eind;
|
||
|
||
edir = (struct elf_m32r_link_hash_entry *) dir;
|
||
eind = (struct elf_m32r_link_hash_entry *) ind;
|
||
|
||
if (eind->dyn_relocs != NULL)
|
||
{
|
||
if (edir->dyn_relocs != NULL)
|
||
{
|
||
struct elf_m32r_dyn_relocs **pp;
|
||
struct elf_m32r_dyn_relocs *p;
|
||
|
||
/* Add reloc counts against the indirect sym to the direct sym
|
||
list. Merge any entries against the same section. */
|
||
for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
|
||
{
|
||
struct elf_m32r_dyn_relocs *q;
|
||
|
||
for (q = edir->dyn_relocs; q != NULL; q = q->next)
|
||
if (q->sec == p->sec)
|
||
{
|
||
q->pc_count += p->pc_count;
|
||
q->count += p->count;
|
||
*pp = p->next;
|
||
break;
|
||
}
|
||
if (q == NULL)
|
||
pp = &p->next;
|
||
}
|
||
*pp = edir->dyn_relocs;
|
||
}
|
||
|
||
edir->dyn_relocs = eind->dyn_relocs;
|
||
eind->dyn_relocs = NULL;
|
||
}
|
||
|
||
_bfd_elf_link_hash_copy_indirect (info, dir, ind);
|
||
}
|
||
|
||
|
||
/* 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
|
||
m32r_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
|
||
struct elf_link_hash_entry *h)
|
||
{
|
||
struct elf_m32r_link_hash_table *htab;
|
||
struct elf_m32r_link_hash_entry *eh;
|
||
struct elf_m32r_dyn_relocs *p;
|
||
bfd *dynobj;
|
||
asection *s;
|
||
|
||
#ifdef DEBUG_PIC
|
||
printf ("m32r_elf_adjust_dynamic_symbol()\n");
|
||
#endif
|
||
|
||
dynobj = elf_hash_table (info)->dynobj;
|
||
|
||
/* Make sure we know what is going on here. */
|
||
BFD_ASSERT (dynobj != NULL
|
||
&& (h->needs_plt
|
||
|| h->u.weakdef != NULL
|
||
|| (h->def_dynamic
|
||
&& h->ref_regular
|
||
&& !h->def_regular)));
|
||
|
||
/* If this is a function, put it in the procedure linkage table. We
|
||
will fill in the contents of the procedure linkage table later,
|
||
when we know the address of the .got section. */
|
||
if (h->type == STT_FUNC
|
||
|| h->needs_plt)
|
||
{
|
||
if (! bfd_link_pic (info)
|
||
&& !h->def_dynamic
|
||
&& !h->ref_dynamic
|
||
&& h->root.type != bfd_link_hash_undefweak
|
||
&& h->root.type != bfd_link_hash_undefined)
|
||
{
|
||
/* This case can occur if we saw a PLT reloc in an input
|
||
file, but the symbol was never referred to by a dynamic
|
||
object. In such a case, we don't actually need to build
|
||
a procedure linkage table, and we can just do a PCREL
|
||
reloc instead. */
|
||
h->plt.offset = (bfd_vma) -1;
|
||
h->needs_plt = 0;
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
else
|
||
h->plt.offset = (bfd_vma) -1;
|
||
|
||
/* 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. */
|
||
|
||
/* If we are creating a shared library, we must presume that the
|
||
only references to the symbol are via the global offset table.
|
||
For such cases we need not do anything here; the relocations will
|
||
be handled correctly by relocate_section. */
|
||
if (bfd_link_pic (info))
|
||
return TRUE;
|
||
|
||
/* If there are no references to this symbol that do not use the
|
||
GOT, we don't need to generate a copy reloc. */
|
||
if (!h->non_got_ref)
|
||
return TRUE;
|
||
|
||
/* If -z nocopyreloc was given, we won't generate them either. */
|
||
if (info->nocopyreloc)
|
||
{
|
||
h->non_got_ref = 0;
|
||
return TRUE;
|
||
}
|
||
|
||
eh = (struct elf_m32r_link_hash_entry *) h;
|
||
for (p = eh->dyn_relocs; p != NULL; p = p->next)
|
||
{
|
||
s = p->sec->output_section;
|
||
if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
|
||
break;
|
||
}
|
||
|
||
/* If we didn't find any dynamic relocs in sections which needs the
|
||
copy reloc, then we'll be keeping the dynamic relocs and avoiding
|
||
the copy reloc. */
|
||
if (p == NULL)
|
||
{
|
||
h->non_got_ref = 0;
|
||
return TRUE;
|
||
}
|
||
|
||
/* We must allocate the symbol in our .dynbss section, which will
|
||
become part of the .bss section of the executable. There will be
|
||
an entry for this symbol in the .dynsym section. The dynamic
|
||
object will contain position independent code, so all references
|
||
from the dynamic object to this symbol will go through the global
|
||
offset table. The dynamic linker will use the .dynsym entry to
|
||
determine the address it must put in the global offset table, so
|
||
both the dynamic object and the regular object will refer to the
|
||
same memory location for the variable. */
|
||
|
||
htab = m32r_elf_hash_table (info);
|
||
if (htab == NULL)
|
||
return FALSE;
|
||
|
||
s = htab->sdynbss;
|
||
BFD_ASSERT (s != NULL);
|
||
|
||
/* We must generate a R_M32R_COPY reloc to tell the dynamic linker
|
||
to copy the initial value out of the dynamic object and into the
|
||
runtime process image. We need to remember the offset into the
|
||
.rela.bss section we are going to use. */
|
||
if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
|
||
{
|
||
asection *srel;
|
||
|
||
srel = htab->srelbss;
|
||
BFD_ASSERT (srel != NULL);
|
||
srel->size += sizeof (Elf32_External_Rela);
|
||
h->needs_copy = 1;
|
||
}
|
||
|
||
return _bfd_elf_adjust_dynamic_copy (info, h, s);
|
||
}
|
||
|
||
/* Allocate space in .plt, .got and associated reloc sections for
|
||
dynamic relocs. */
|
||
|
||
static bfd_boolean
|
||
allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
|
||
{
|
||
struct bfd_link_info *info;
|
||
struct elf_m32r_link_hash_table *htab;
|
||
struct elf_m32r_link_hash_entry *eh;
|
||
struct elf_m32r_dyn_relocs *p;
|
||
|
||
if (h->root.type == bfd_link_hash_indirect)
|
||
return TRUE;
|
||
|
||
info = (struct bfd_link_info *) inf;
|
||
htab = m32r_elf_hash_table (info);
|
||
if (htab == NULL)
|
||
return FALSE;
|
||
|
||
eh = (struct elf_m32r_link_hash_entry *) h;
|
||
|
||
if (htab->root.dynamic_sections_created
|
||
&& h->plt.refcount > 0)
|
||
{
|
||
/* Make sure this symbol is output as a dynamic symbol.
|
||
Undefined weak syms won't yet be marked as dynamic. */
|
||
if (h->dynindx == -1
|
||
&& !h->forced_local)
|
||
{
|
||
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
||
return FALSE;
|
||
}
|
||
|
||
if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
|
||
{
|
||
asection *s = htab->root.splt;
|
||
|
||
/* If this is the first .plt entry, make room for the special
|
||
first entry. */
|
||
if (s->size == 0)
|
||
s->size += PLT_ENTRY_SIZE;
|
||
|
||
h->plt.offset = s->size;
|
||
|
||
/* If this symbol is not defined in a regular file, and we are
|
||
not generating a shared library, then set the symbol to this
|
||
location in the .plt. This is required to make function
|
||
pointers compare as equal between the normal executable and
|
||
the shared library. */
|
||
if (! bfd_link_pic (info)
|
||
&& !h->def_regular)
|
||
{
|
||
h->root.u.def.section = s;
|
||
h->root.u.def.value = h->plt.offset;
|
||
}
|
||
|
||
/* Make room for this entry. */
|
||
s->size += PLT_ENTRY_SIZE;
|
||
|
||
/* We also need to make an entry in the .got.plt section, which
|
||
will be placed in the .got section by the linker script. */
|
||
htab->root.sgotplt->size += 4;
|
||
|
||
/* We also need to make an entry in the .rel.plt section. */
|
||
htab->root.srelplt->size += sizeof (Elf32_External_Rela);
|
||
}
|
||
else
|
||
{
|
||
h->plt.offset = (bfd_vma) -1;
|
||
h->needs_plt = 0;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
h->plt.offset = (bfd_vma) -1;
|
||
h->needs_plt = 0;
|
||
}
|
||
|
||
if (h->got.refcount > 0)
|
||
{
|
||
asection *s;
|
||
bfd_boolean dyn;
|
||
|
||
/* Make sure this symbol is output as a dynamic symbol.
|
||
Undefined weak syms won't yet be marked as dynamic. */
|
||
if (h->dynindx == -1
|
||
&& !h->forced_local)
|
||
{
|
||
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
||
return FALSE;
|
||
}
|
||
|
||
s = htab->root.sgot;
|
||
|
||
h->got.offset = s->size;
|
||
s->size += 4;
|
||
dyn = htab->root.dynamic_sections_created;
|
||
if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h))
|
||
htab->root.srelgot->size += sizeof (Elf32_External_Rela);
|
||
}
|
||
else
|
||
h->got.offset = (bfd_vma) -1;
|
||
|
||
if (eh->dyn_relocs == NULL)
|
||
return TRUE;
|
||
|
||
/* In the shared -Bsymbolic case, discard space allocated for
|
||
dynamic pc-relative relocs against symbols which turn out to be
|
||
defined in regular objects. For the normal shared case, discard
|
||
space for pc-relative relocs that have become local due to symbol
|
||
visibility changes. */
|
||
|
||
if (bfd_link_pic (info))
|
||
{
|
||
if (h->def_regular
|
||
&& (h->forced_local
|
||
|| info->symbolic))
|
||
{
|
||
struct elf_m32r_dyn_relocs **pp;
|
||
|
||
for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
|
||
{
|
||
p->count -= p->pc_count;
|
||
p->pc_count = 0;
|
||
if (p->count == 0)
|
||
*pp = p->next;
|
||
else
|
||
pp = &p->next;
|
||
}
|
||
}
|
||
|
||
/* Also discard relocs on undefined weak syms with non-default
|
||
visibility. */
|
||
if (eh->dyn_relocs != NULL
|
||
&& h->root.type == bfd_link_hash_undefweak)
|
||
{
|
||
if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
|
||
eh->dyn_relocs = NULL;
|
||
|
||
/* Make sure undefined weak symbols are output as a dynamic
|
||
symbol in PIEs. */
|
||
else if (h->dynindx == -1
|
||
&& !h->forced_local)
|
||
{
|
||
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
||
return FALSE;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* For the non-shared case, discard space for relocs against
|
||
symbols which turn out to need copy relocs or are not
|
||
dynamic. */
|
||
|
||
if (!h->non_got_ref
|
||
&& ((h->def_dynamic
|
||
&& !h->def_regular)
|
||
|| (htab->root.dynamic_sections_created
|
||
&& (h->root.type == bfd_link_hash_undefweak
|
||
|| h->root.type == bfd_link_hash_undefined))))
|
||
{
|
||
/* Make sure this symbol is output as a dynamic symbol.
|
||
Undefined weak syms won't yet be marked as dynamic. */
|
||
if (h->dynindx == -1
|
||
&& !h->forced_local)
|
||
{
|
||
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
||
return FALSE;
|
||
}
|
||
|
||
/* If that succeeded, we know we'll be keeping all the
|
||
relocs. */
|
||
if (h->dynindx != -1)
|
||
goto keep;
|
||
}
|
||
|
||
eh->dyn_relocs = NULL;
|
||
|
||
keep: ;
|
||
}
|
||
|
||
/* Finally, allocate space. */
|
||
for (p = eh->dyn_relocs; p != NULL; p = p->next)
|
||
{
|
||
asection *sreloc = elf_section_data (p->sec)->sreloc;
|
||
sreloc->size += p->count * sizeof (Elf32_External_Rela);
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Find any dynamic relocs that apply to read-only sections. */
|
||
|
||
static bfd_boolean
|
||
readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
|
||
{
|
||
struct elf_m32r_link_hash_entry *eh;
|
||
struct elf_m32r_dyn_relocs *p;
|
||
|
||
eh = (struct elf_m32r_link_hash_entry *) h;
|
||
for (p = eh->dyn_relocs; p != NULL; p = p->next)
|
||
{
|
||
asection *s = p->sec->output_section;
|
||
|
||
if (s != NULL && (s->flags & SEC_READONLY) != 0)
|
||
{
|
||
struct bfd_link_info *info = (struct bfd_link_info *) inf;
|
||
|
||
info->flags |= DF_TEXTREL;
|
||
|
||
/* Not an error, just cut short the traversal. */
|
||
return FALSE;
|
||
}
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
/* Set the sizes of the dynamic sections. */
|
||
|
||
static bfd_boolean
|
||
m32r_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
|
||
struct bfd_link_info *info)
|
||
{
|
||
struct elf_m32r_link_hash_table *htab;
|
||
bfd *dynobj;
|
||
asection *s;
|
||
bfd_boolean relocs;
|
||
bfd *ibfd;
|
||
|
||
#ifdef DEBUG_PIC
|
||
printf ("m32r_elf_size_dynamic_sections()\n");
|
||
#endif
|
||
|
||
htab = m32r_elf_hash_table (info);
|
||
if (htab == NULL)
|
||
return FALSE;
|
||
|
||
dynobj = htab->root.dynobj;
|
||
BFD_ASSERT (dynobj != NULL);
|
||
|
||
if (htab->root.dynamic_sections_created)
|
||
{
|
||
/* Set the contents of the .interp section to the interpreter. */
|
||
if (bfd_link_executable (info) && !info->nointerp)
|
||
{
|
||
s = bfd_get_linker_section (dynobj, ".interp");
|
||
BFD_ASSERT (s != NULL);
|
||
s->size = sizeof ELF_DYNAMIC_INTERPRETER;
|
||
s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
|
||
}
|
||
}
|
||
|
||
/* Set up .got offsets for local syms, and space for local dynamic
|
||
relocs. */
|
||
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
|
||
{
|
||
bfd_signed_vma *local_got;
|
||
bfd_signed_vma *end_local_got;
|
||
bfd_size_type locsymcount;
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
asection *srel;
|
||
|
||
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
|
||
continue;
|
||
|
||
for (s = ibfd->sections; s != NULL; s = s->next)
|
||
{
|
||
struct elf_m32r_dyn_relocs *p;
|
||
|
||
for (p = ((struct elf_m32r_dyn_relocs *)
|
||
elf_section_data (s)->local_dynrel);
|
||
p != NULL;
|
||
p = p->next)
|
||
{
|
||
if (! bfd_is_abs_section (p->sec)
|
||
&& bfd_is_abs_section (p->sec->output_section))
|
||
{
|
||
/* Input section has been discarded, either because
|
||
it is a copy of a linkonce section or due to
|
||
linker script /DISCARD/, so we'll be discarding
|
||
the relocs too. */
|
||
}
|
||
else if (p->count != 0)
|
||
{
|
||
srel = elf_section_data (p->sec)->sreloc;
|
||
srel->size += p->count * sizeof (Elf32_External_Rela);
|
||
if ((p->sec->output_section->flags & SEC_READONLY) != 0)
|
||
info->flags |= DF_TEXTREL;
|
||
}
|
||
}
|
||
}
|
||
|
||
local_got = elf_local_got_refcounts (ibfd);
|
||
if (!local_got)
|
||
continue;
|
||
|
||
symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
|
||
locsymcount = symtab_hdr->sh_info;
|
||
end_local_got = local_got + locsymcount;
|
||
s = htab->root.sgot;
|
||
srel = htab->root.srelgot;
|
||
for (; local_got < end_local_got; ++local_got)
|
||
{
|
||
if (*local_got > 0)
|
||
{
|
||
*local_got = s->size;
|
||
s->size += 4;
|
||
if (bfd_link_pic (info))
|
||
srel->size += sizeof (Elf32_External_Rela);
|
||
}
|
||
else
|
||
*local_got = (bfd_vma) -1;
|
||
}
|
||
}
|
||
|
||
/* Allocate global sym .plt and .got entries, and space for global
|
||
sym dynamic relocs. */
|
||
elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
|
||
|
||
/* We now have determined the sizes of the various dynamic sections.
|
||
Allocate memory for them. */
|
||
relocs = FALSE;
|
||
for (s = dynobj->sections; s != NULL; s = s->next)
|
||
{
|
||
if ((s->flags & SEC_LINKER_CREATED) == 0)
|
||
continue;
|
||
|
||
if (s == htab->root.splt
|
||
|| s == htab->root.sgot
|
||
|| s == htab->root.sgotplt
|
||
|| s == htab->sdynbss)
|
||
{
|
||
/* Strip this section if we don't need it; see the
|
||
comment below. */
|
||
}
|
||
else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
|
||
{
|
||
if (s->size != 0 && s != htab->root.srelplt)
|
||
relocs = 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
|
||
/* It's not one of our 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 mostly to handle .rela.bss and
|
||
.rela.plt. We must create both sections in
|
||
create_dynamic_sections, because they 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. */
|
||
s->flags |= SEC_EXCLUDE;
|
||
continue;
|
||
}
|
||
|
||
if ((s->flags & SEC_HAS_CONTENTS) == 0)
|
||
continue;
|
||
|
||
/* Allocate memory for the section contents. We use bfd_zalloc
|
||
here in case unused entries are not reclaimed before the
|
||
section's contents are written out. This should not happen,
|
||
but this way if it does, we get a R_M32R_NONE reloc instead
|
||
of garbage. */
|
||
s->contents = bfd_zalloc (dynobj, s->size);
|
||
if (s->contents == NULL)
|
||
return FALSE;
|
||
}
|
||
|
||
if (htab->root.dynamic_sections_created)
|
||
{
|
||
/* Add some entries to the .dynamic section. We fill in the
|
||
values later, in m32r_elf_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 (bfd_link_executable (info))
|
||
{
|
||
if (! add_dynamic_entry (DT_DEBUG, 0))
|
||
return FALSE;
|
||
}
|
||
|
||
if (htab->root.splt->size != 0)
|
||
{
|
||
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 (relocs)
|
||
{
|
||
if (! add_dynamic_entry (DT_RELA, 0)
|
||
|| ! add_dynamic_entry (DT_RELASZ, 0)
|
||
|| ! add_dynamic_entry (DT_RELAENT,
|
||
sizeof (Elf32_External_Rela)))
|
||
return FALSE;
|
||
|
||
/* If any dynamic relocs apply to a read-only section,
|
||
then we need a DT_TEXTREL entry. */
|
||
if ((info->flags & DF_TEXTREL) == 0)
|
||
elf_link_hash_traverse (&htab->root, readonly_dynrelocs,
|
||
info);
|
||
|
||
if ((info->flags & DF_TEXTREL) != 0)
|
||
{
|
||
if (! add_dynamic_entry (DT_TEXTREL, 0))
|
||
return FALSE;
|
||
}
|
||
}
|
||
}
|
||
#undef add_dynamic_entry
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Relocate an M32R/D ELF section.
|
||
There is some attempt to make this function usable for many architectures,
|
||
both for RELA and REL type relocs, if only to serve as a learning tool.
|
||
|
||
The RELOCATE_SECTION function is called by the new ELF backend linker
|
||
to handle the relocations for a section.
|
||
|
||
The relocs are always passed as Rela structures; if the section
|
||
actually uses Rel structures, the r_addend field will always be
|
||
zero.
|
||
|
||
This function is responsible for adjust the section contents as
|
||
necessary, and (if using Rela relocs and generating a
|
||
relocatable output file) adjusting the reloc addend as
|
||
necessary.
|
||
|
||
This function does not have to worry about setting the reloc
|
||
address or the reloc symbol index.
|
||
|
||
LOCAL_SYMS is a pointer to the swapped in local symbols.
|
||
|
||
LOCAL_SECTIONS is an array giving the section in the input file
|
||
corresponding to the st_shndx field of each local symbol.
|
||
|
||
The global hash table entry for the global symbols can be found
|
||
via elf_sym_hashes (input_bfd).
|
||
|
||
When generating relocatable output, this function must handle
|
||
STB_LOCAL/STT_SECTION symbols specially. The output symbol is
|
||
going to be the section symbol corresponding to the output
|
||
section, which means that the addend must be adjusted
|
||
accordingly. */
|
||
|
||
static bfd_boolean
|
||
m32r_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
|
||
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_tdata (input_bfd)->symtab_hdr;
|
||
struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
|
||
Elf_Internal_Rela *rel, *relend;
|
||
/* Assume success. */
|
||
bfd_boolean ret = TRUE;
|
||
struct elf_m32r_link_hash_table *htab = m32r_elf_hash_table (info);
|
||
bfd_vma *local_got_offsets;
|
||
asection *sgot, *splt, *sreloc;
|
||
bfd_vma high_address = bfd_get_section_limit (input_bfd, input_section);
|
||
|
||
if (htab == NULL)
|
||
return FALSE;
|
||
|
||
local_got_offsets = elf_local_got_offsets (input_bfd);
|
||
|
||
sgot = htab->root.sgot;
|
||
splt = htab->root.splt;
|
||
sreloc = NULL;
|
||
|
||
rel = relocs;
|
||
relend = relocs + input_section->reloc_count;
|
||
for (; rel < relend; rel++)
|
||
{
|
||
int r_type;
|
||
reloc_howto_type *howto;
|
||
unsigned long r_symndx;
|
||
struct elf_link_hash_entry *h;
|
||
/* We can't modify r_addend here as elf_link_input_bfd has an assert to
|
||
ensure it's zero (we use REL relocs, not RELA). Therefore this
|
||
should be assigning zero to `addend', but for clarity we use
|
||
`r_addend'. */
|
||
bfd_vma addend = rel->r_addend;
|
||
bfd_vma offset = rel->r_offset;
|
||
bfd_vma relocation;
|
||
Elf_Internal_Sym *sym;
|
||
asection *sec;
|
||
const char *sym_name;
|
||
bfd_reloc_status_type r;
|
||
const char *errmsg = NULL;
|
||
bfd_boolean use_rel = FALSE;
|
||
|
||
h = NULL;
|
||
r_type = ELF32_R_TYPE (rel->r_info);
|
||
if (r_type < 0 || r_type >= (int) R_M32R_max)
|
||
{
|
||
/* xgettext:c-format */
|
||
_bfd_error_handler (_("%B: unknown relocation type %d"),
|
||
input_bfd, (int) r_type);
|
||
bfd_set_error (bfd_error_bad_value);
|
||
ret = FALSE;
|
||
continue;
|
||
}
|
||
|
||
if ( r_type == R_M32R_GNU_VTENTRY
|
||
|| r_type == R_M32R_GNU_VTINHERIT
|
||
|| r_type == R_M32R_NONE
|
||
|| r_type == R_M32R_RELA_GNU_VTENTRY
|
||
|| r_type == R_M32R_RELA_GNU_VTINHERIT)
|
||
continue;
|
||
|
||
if (r_type <= R_M32R_GNU_VTENTRY)
|
||
use_rel = TRUE;
|
||
|
||
howto = m32r_elf_howto_table + r_type;
|
||
r_symndx = ELF32_R_SYM (rel->r_info);
|
||
|
||
sym = NULL;
|
||
sec = NULL;
|
||
h = NULL;
|
||
|
||
if (r_symndx < symtab_hdr->sh_info)
|
||
{
|
||
/* Local symbol. */
|
||
sym = local_syms + r_symndx;
|
||
sec = local_sections[r_symndx];
|
||
sym_name = "<local symbol>";
|
||
|
||
if (!use_rel)
|
||
{
|
||
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
|
||
addend = rel->r_addend;
|
||
}
|
||
else
|
||
{
|
||
relocation = (sec->output_section->vma
|
||
+ sec->output_offset
|
||
+ sym->st_value);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* External symbol. */
|
||
relocation = 0;
|
||
|
||
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
||
|
||
if (info->wrap_hash != NULL
|
||
&& (input_section->flags & SEC_DEBUGGING) != 0)
|
||
h = ((struct elf_link_hash_entry *)
|
||
unwrap_hash_lookup (info, input_bfd, &h->root));
|
||
|
||
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;
|
||
sym_name = h->root.root.string;
|
||
|
||
if (h->root.type == bfd_link_hash_defined
|
||
|| h->root.type == bfd_link_hash_defweak)
|
||
{
|
||
bfd_boolean dyn;
|
||
sec = h->root.u.def.section;
|
||
|
||
dyn = htab->root.dynamic_sections_created;
|
||
sec = h->root.u.def.section;
|
||
if (r_type == R_M32R_GOTPC24
|
||
|| (r_type == R_M32R_GOTPC_HI_ULO
|
||
|| r_type == R_M32R_GOTPC_HI_SLO
|
||
|| r_type == R_M32R_GOTPC_LO)
|
||
|| (r_type == R_M32R_26_PLTREL
|
||
&& h->plt.offset != (bfd_vma) -1)
|
||
|| ((r_type == R_M32R_GOT24
|
||
|| r_type == R_M32R_GOT16_HI_ULO
|
||
|| r_type == R_M32R_GOT16_HI_SLO
|
||
|| r_type == R_M32R_GOT16_LO)
|
||
&& WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
|
||
bfd_link_pic (info),
|
||
h)
|
||
&& (! bfd_link_pic (info)
|
||
|| (! info->symbolic && h->dynindx != -1)
|
||
|| !h->def_regular))
|
||
|| (bfd_link_pic (info)
|
||
&& ((! info->symbolic && h->dynindx != -1)
|
||
|| !h->def_regular)
|
||
&& (((r_type == R_M32R_16_RELA
|
||
|| r_type == R_M32R_32_RELA
|
||
|| r_type == R_M32R_24_RELA
|
||
|| r_type == R_M32R_HI16_ULO_RELA
|
||
|| r_type == R_M32R_HI16_SLO_RELA
|
||
|| r_type == R_M32R_LO16_RELA)
|
||
&& !h->forced_local)
|
||
|| r_type == R_M32R_REL32
|
||
|| r_type == R_M32R_10_PCREL_RELA
|
||
|| r_type == R_M32R_18_PCREL_RELA
|
||
|| r_type == R_M32R_26_PCREL_RELA)
|
||
&& ((input_section->flags & SEC_ALLOC) != 0
|
||
/* DWARF will emit R_M32R_16(24,32) relocations
|
||
in its sections against symbols defined
|
||
externally in shared libraries. We can't do
|
||
anything with them here. */
|
||
|| ((input_section->flags & SEC_DEBUGGING) != 0
|
||
&& h->def_dynamic))))
|
||
{
|
||
/* In these cases, we don't need the relocation
|
||
value. We check specially because in some
|
||
obscure cases sec->output_section will be NULL. */
|
||
}
|
||
else if (sec->output_section != NULL)
|
||
relocation = (h->root.u.def.value
|
||
+ sec->output_section->vma
|
||
+ sec->output_offset);
|
||
else if (!bfd_link_relocatable (info)
|
||
&& (_bfd_elf_section_offset (output_bfd, info,
|
||
input_section,
|
||
rel->r_offset)
|
||
!= (bfd_vma) -1))
|
||
{
|
||
_bfd_error_handler
|
||
/* xgettext:c-format */
|
||
(_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
|
||
input_bfd,
|
||
input_section,
|
||
(long) rel->r_offset,
|
||
howto->name,
|
||
h->root.root.string);
|
||
}
|
||
}
|
||
else if (h->root.type == bfd_link_hash_undefweak)
|
||
;
|
||
else if (info->unresolved_syms_in_objects == RM_IGNORE
|
||
&& ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
|
||
;
|
||
else if (!bfd_link_relocatable (info))
|
||
(*info->callbacks->undefined_symbol)
|
||
(info, h->root.root.string, input_bfd,
|
||
input_section, offset,
|
||
(info->unresolved_syms_in_objects == RM_GENERATE_ERROR
|
||
|| ELF_ST_VISIBILITY (h->other)));
|
||
}
|
||
|
||
if (sec != NULL && discarded_section (sec))
|
||
RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
|
||
rel, 1, relend, howto, 0, contents);
|
||
|
||
if (bfd_link_relocatable (info) && !use_rel)
|
||
{
|
||
/* This is a relocatable link. We don't have to change
|
||
anything, unless the reloc is against a section symbol,
|
||
in which case we have to adjust according to where the
|
||
section symbol winds up in the output section. */
|
||
if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
|
||
rel->r_addend += sec->output_offset;
|
||
continue;
|
||
}
|
||
|
||
if (bfd_link_relocatable (info) && use_rel)
|
||
{
|
||
/* This is a relocatable link. We don't have to change
|
||
anything, unless the reloc is against a section symbol,
|
||
in which case we have to adjust according to where the
|
||
section symbol winds up in the output section. */
|
||
if (sym == NULL || ELF_ST_TYPE (sym->st_info) != STT_SECTION)
|
||
continue;
|
||
|
||
addend += sec->output_offset;
|
||
|
||
/* If partial_inplace, we need to store any additional addend
|
||
back in the section. */
|
||
if (! howto->partial_inplace)
|
||
continue;
|
||
/* ??? Here is a nice place to call a special_function
|
||
like handler. */
|
||
if (r_type != R_M32R_HI16_SLO && r_type != R_M32R_HI16_ULO)
|
||
r = _bfd_relocate_contents (howto, input_bfd,
|
||
addend, contents + offset);
|
||
else
|
||
{
|
||
Elf_Internal_Rela *lorel;
|
||
|
||
/* We allow an arbitrary number of HI16 relocs before the
|
||
LO16 reloc. This permits gcc to emit the HI and LO relocs
|
||
itself. */
|
||
for (lorel = rel + 1;
|
||
(lorel < relend
|
||
&& (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
|
||
|| ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
|
||
lorel++)
|
||
continue;
|
||
if (lorel < relend
|
||
&& ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
|
||
{
|
||
m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
|
||
contents, addend);
|
||
r = bfd_reloc_ok;
|
||
}
|
||
else
|
||
r = _bfd_relocate_contents (howto, input_bfd,
|
||
addend, contents + offset);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* Sanity check the address. */
|
||
if (offset > high_address)
|
||
{
|
||
r = bfd_reloc_outofrange;
|
||
goto check_reloc;
|
||
}
|
||
|
||
switch ((int) r_type)
|
||
{
|
||
case R_M32R_GOTOFF:
|
||
/* Relocation is relative to the start of the global offset
|
||
table (for ld24 rx, #uimm24). eg access at label+addend
|
||
|
||
ld24 rx. #label@GOTOFF + addend
|
||
sub rx, r12. */
|
||
|
||
BFD_ASSERT (sgot != NULL);
|
||
|
||
relocation = -(relocation - sgot->output_section->vma);
|
||
rel->r_addend = -rel->r_addend;
|
||
break;
|
||
|
||
case R_M32R_GOTOFF_HI_ULO:
|
||
case R_M32R_GOTOFF_HI_SLO:
|
||
case R_M32R_GOTOFF_LO:
|
||
BFD_ASSERT (sgot != NULL);
|
||
|
||
relocation -= sgot->output_section->vma;
|
||
|
||
if ((r_type == R_M32R_GOTOFF_HI_SLO)
|
||
&& ((relocation + rel->r_addend) & 0x8000))
|
||
rel->r_addend += 0x10000;
|
||
break;
|
||
|
||
case R_M32R_GOTPC24:
|
||
/* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
|
||
ld24 rx,#_GLOBAL_OFFSET_TABLE_
|
||
*/
|
||
relocation = sgot->output_section->vma;
|
||
break;
|
||
|
||
case R_M32R_GOTPC_HI_ULO:
|
||
case R_M32R_GOTPC_HI_SLO:
|
||
case R_M32R_GOTPC_LO:
|
||
{
|
||
/* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
|
||
bl .+4
|
||
seth rx,#high(_GLOBAL_OFFSET_TABLE_)
|
||
or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
|
||
or
|
||
bl .+4
|
||
seth rx,#shigh(_GLOBAL_OFFSET_TABLE_)
|
||
add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
|
||
*/
|
||
relocation = sgot->output_section->vma;
|
||
relocation -= (input_section->output_section->vma
|
||
+ input_section->output_offset
|
||
+ rel->r_offset);
|
||
if ((r_type == R_M32R_GOTPC_HI_SLO)
|
||
&& ((relocation + rel->r_addend) & 0x8000))
|
||
rel->r_addend += 0x10000;
|
||
|
||
break;
|
||
}
|
||
case R_M32R_GOT16_HI_ULO:
|
||
case R_M32R_GOT16_HI_SLO:
|
||
case R_M32R_GOT16_LO:
|
||
/* Fall through. */
|
||
case R_M32R_GOT24:
|
||
/* Relocation is to the entry for this symbol in the global
|
||
offset table. */
|
||
BFD_ASSERT (sgot != NULL);
|
||
|
||
if (h != NULL)
|
||
{
|
||
bfd_boolean dyn;
|
||
bfd_vma off;
|
||
|
||
off = h->got.offset;
|
||
BFD_ASSERT (off != (bfd_vma) -1);
|
||
|
||
dyn = htab->root.dynamic_sections_created;
|
||
if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
|
||
bfd_link_pic (info),
|
||
h)
|
||
|| (bfd_link_pic (info)
|
||
&& (info->symbolic
|
||
|| h->dynindx == -1
|
||
|| h->forced_local)
|
||
&& h->def_regular))
|
||
{
|
||
/* This is actually a static link, or it is a
|
||
-Bsymbolic link and the symbol is defined
|
||
locally, or the symbol was forced to be local
|
||
because of a version file. We must initialize
|
||
this entry in the global offset table. Since the
|
||
offset must always be a multiple of 4, we use the
|
||
least significant bit to record whether we have
|
||
initialized it already.
|
||
|
||
When doing a dynamic link, we create a .rela.got
|
||
relocation entry to initialize the value. This
|
||
is done in the finish_dynamic_symbol routine. */
|
||
if ((off & 1) != 0)
|
||
off &= ~1;
|
||
else
|
||
{
|
||
bfd_put_32 (output_bfd, relocation,
|
||
sgot->contents + off);
|
||
h->got.offset |= 1;
|
||
}
|
||
}
|
||
|
||
relocation = sgot->output_offset + off;
|
||
}
|
||
else
|
||
{
|
||
bfd_vma off;
|
||
bfd_byte *loc;
|
||
|
||
BFD_ASSERT (local_got_offsets != NULL
|
||
&& local_got_offsets[r_symndx] != (bfd_vma) -1);
|
||
|
||
off = local_got_offsets[r_symndx];
|
||
|
||
/* The offset must always be a multiple of 4. We use
|
||
the least significant bit to record whether we have
|
||
already processed this entry. */
|
||
if ((off & 1) != 0)
|
||
off &= ~1;
|
||
else
|
||
{
|
||
bfd_put_32 (output_bfd, relocation, sgot->contents + off);
|
||
|
||
if (bfd_link_pic (info))
|
||
{
|
||
asection *srelgot;
|
||
Elf_Internal_Rela outrel;
|
||
|
||
/* We need to generate a R_M32R_RELATIVE reloc
|
||
for the dynamic linker. */
|
||
srelgot = htab->root.srelgot;
|
||
BFD_ASSERT (srelgot != NULL);
|
||
|
||
outrel.r_offset = (sgot->output_section->vma
|
||
+ sgot->output_offset
|
||
+ off);
|
||
outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
|
||
outrel.r_addend = relocation;
|
||
loc = srelgot->contents;
|
||
loc += srelgot->reloc_count * sizeof (Elf32_External_Rela);
|
||
bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
|
||
++srelgot->reloc_count;
|
||
}
|
||
|
||
local_got_offsets[r_symndx] |= 1;
|
||
}
|
||
|
||
relocation = sgot->output_offset + off;
|
||
}
|
||
if ((r_type == R_M32R_GOT16_HI_SLO)
|
||
&& ((relocation + rel->r_addend) & 0x8000))
|
||
rel->r_addend += 0x10000;
|
||
|
||
break;
|
||
|
||
case R_M32R_26_PLTREL:
|
||
/* Relocation is to the entry for this symbol in the
|
||
procedure linkage table. */
|
||
|
||
/* The native assembler will generate a 26_PLTREL reloc
|
||
for a local symbol if you assemble a call from one
|
||
section to another when using -K pic. */
|
||
if (h == NULL)
|
||
break;
|
||
|
||
if (h->forced_local)
|
||
break;
|
||
|
||
if (h->plt.offset == (bfd_vma) -1)
|
||
/* We didn't make a PLT entry for this symbol. This
|
||
happens when statically linking PIC code, or when
|
||
using -Bsymbolic. */
|
||
break;
|
||
|
||
relocation = (splt->output_section->vma
|
||
+ splt->output_offset
|
||
+ h->plt.offset);
|
||
break;
|
||
|
||
case R_M32R_HI16_SLO_RELA:
|
||
if ((relocation + rel->r_addend) & 0x8000)
|
||
rel->r_addend += 0x10000;
|
||
/* Fall through. */
|
||
|
||
case R_M32R_16_RELA:
|
||
case R_M32R_24_RELA:
|
||
case R_M32R_32_RELA:
|
||
case R_M32R_REL32:
|
||
case R_M32R_10_PCREL_RELA:
|
||
case R_M32R_18_PCREL_RELA:
|
||
case R_M32R_26_PCREL_RELA:
|
||
case R_M32R_HI16_ULO_RELA:
|
||
case R_M32R_LO16_RELA:
|
||
if (bfd_link_pic (info)
|
||
&& r_symndx != STN_UNDEF
|
||
&& (input_section->flags & SEC_ALLOC) != 0
|
||
&& (( r_type != R_M32R_10_PCREL_RELA
|
||
&& r_type != R_M32R_18_PCREL_RELA
|
||
&& r_type != R_M32R_26_PCREL_RELA
|
||
&& r_type != R_M32R_REL32)
|
||
|| (h != NULL
|
||
&& h->dynindx != -1
|
||
&& (! info->symbolic
|
||
|| !h->def_regular))))
|
||
{
|
||
Elf_Internal_Rela outrel;
|
||
bfd_boolean skip, relocate;
|
||
bfd_byte *loc;
|
||
|
||
/* When generating a shared object, these relocations
|
||
are copied into the output file to be resolved at run
|
||
time. */
|
||
if (sreloc == NULL)
|
||
{
|
||
sreloc = _bfd_elf_get_dynamic_reloc_section
|
||
(input_bfd, input_section, /*rela?*/ TRUE);
|
||
if (sreloc == NULL)
|
||
return FALSE;
|
||
}
|
||
|
||
skip = FALSE;
|
||
relocate = FALSE;
|
||
|
||
outrel.r_offset = _bfd_elf_section_offset (output_bfd,
|
||
info,
|
||
input_section,
|
||
rel->r_offset);
|
||
if (outrel.r_offset == (bfd_vma) -1)
|
||
skip = TRUE;
|
||
else if (outrel.r_offset == (bfd_vma) -2)
|
||
skip = relocate = TRUE;
|
||
outrel.r_offset += (input_section->output_section->vma
|
||
+ input_section->output_offset);
|
||
|
||
if (skip)
|
||
memset (&outrel, 0, sizeof outrel);
|
||
else if ( r_type == R_M32R_10_PCREL_RELA
|
||
|| r_type == R_M32R_18_PCREL_RELA
|
||
|| r_type == R_M32R_26_PCREL_RELA
|
||
|| r_type == R_M32R_REL32)
|
||
{
|
||
BFD_ASSERT (h != NULL && h->dynindx != -1);
|
||
outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
|
||
outrel.r_addend = rel->r_addend;
|
||
}
|
||
else
|
||
{
|
||
/* h->dynindx may be -1 if this symbol was marked to
|
||
become local. */
|
||
if (h == NULL
|
||
|| ((info->symbolic || h->dynindx == -1)
|
||
&& h->def_regular))
|
||
{
|
||
relocate = TRUE;
|
||
outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
|
||
outrel.r_addend = relocation + rel->r_addend;
|
||
}
|
||
else
|
||
{
|
||
BFD_ASSERT (h->dynindx != -1);
|
||
outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
|
||
outrel.r_addend = relocation + rel->r_addend;
|
||
}
|
||
}
|
||
|
||
loc = sreloc->contents;
|
||
loc += sreloc->reloc_count * sizeof (Elf32_External_Rela);
|
||
bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
|
||
++sreloc->reloc_count;
|
||
|
||
/* If this reloc is against an external symbol, we do
|
||
not want to fiddle with the addend. Otherwise, we
|
||
need to include the symbol value so that it becomes
|
||
an addend for the dynamic reloc. */
|
||
if (! relocate)
|
||
continue;
|
||
break;
|
||
}
|
||
else if (r_type != R_M32R_10_PCREL_RELA)
|
||
break;
|
||
/* Fall through. */
|
||
|
||
case (int) R_M32R_10_PCREL :
|
||
r = m32r_elf_do_10_pcrel_reloc (input_bfd, howto, input_section,
|
||
contents, offset,
|
||
sec, relocation, addend);
|
||
goto check_reloc;
|
||
|
||
case (int) R_M32R_HI16_SLO :
|
||
case (int) R_M32R_HI16_ULO :
|
||
{
|
||
Elf_Internal_Rela *lorel;
|
||
|
||
/* We allow an arbitrary number of HI16 relocs before the
|
||
LO16 reloc. This permits gcc to emit the HI and LO relocs
|
||
itself. */
|
||
for (lorel = rel + 1;
|
||
(lorel < relend
|
||
&& (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
|
||
|| ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
|
||
lorel++)
|
||
continue;
|
||
if (lorel < relend
|
||
&& ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
|
||
{
|
||
m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
|
||
contents, relocation + addend);
|
||
r = bfd_reloc_ok;
|
||
}
|
||
else
|
||
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
|
||
contents, offset,
|
||
relocation, addend);
|
||
}
|
||
|
||
goto check_reloc;
|
||
|
||
case (int) R_M32R_SDA16_RELA:
|
||
case (int) R_M32R_SDA16 :
|
||
{
|
||
const char *name;
|
||
|
||
BFD_ASSERT (sec != NULL);
|
||
name = bfd_get_section_name (sec->owner, sec);
|
||
|
||
if ( strcmp (name, ".sdata") == 0
|
||
|| strcmp (name, ".sbss") == 0
|
||
|| strcmp (name, ".scommon") == 0)
|
||
{
|
||
bfd_vma sda_base;
|
||
bfd *out_bfd = sec->output_section->owner;
|
||
|
||
r = m32r_elf_final_sda_base (out_bfd, info,
|
||
&errmsg,
|
||
&sda_base);
|
||
if (r != bfd_reloc_ok)
|
||
{
|
||
ret = FALSE;
|
||
goto check_reloc;
|
||
}
|
||
|
||
/* At this point `relocation' contains the object's
|
||
address. */
|
||
relocation -= sda_base;
|
||
/* Now it contains the offset from _SDA_BASE_. */
|
||
}
|
||
else
|
||
{
|
||
_bfd_error_handler
|
||
/* xgettext:c-format */
|
||
(_("%B: The target (%s) of an %s relocation is in the wrong section (%A)"),
|
||
input_bfd,
|
||
sec,
|
||
sym_name,
|
||
m32r_elf_howto_table[(int) r_type].name);
|
||
/*bfd_set_error (bfd_error_bad_value); ??? why? */
|
||
ret = FALSE;
|
||
continue;
|
||
}
|
||
}
|
||
/* Fall through. */
|
||
|
||
default : /* OLD_M32R_RELOC */
|
||
|
||
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
|
||
contents, offset,
|
||
relocation, addend);
|
||
goto check_reloc;
|
||
}
|
||
|
||
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
|
||
contents, rel->r_offset,
|
||
relocation, rel->r_addend);
|
||
|
||
}
|
||
|
||
check_reloc:
|
||
|
||
if (r != bfd_reloc_ok)
|
||
{
|
||
/* FIXME: This should be generic enough to go in a utility. */
|
||
const char *name;
|
||
|
||
if (h != NULL)
|
||
name = h->root.root.string;
|
||
else
|
||
{
|
||
name = (bfd_elf_string_from_elf_section
|
||
(input_bfd, symtab_hdr->sh_link, sym->st_name));
|
||
if (name == NULL || *name == '\0')
|
||
name = bfd_section_name (input_bfd, sec);
|
||
}
|
||
|
||
if (errmsg != NULL)
|
||
goto common_error;
|
||
|
||
switch (r)
|
||
{
|
||
case bfd_reloc_overflow:
|
||
(*info->callbacks->reloc_overflow)
|
||
(info, (h ? &h->root : NULL), name, howto->name,
|
||
(bfd_vma) 0, input_bfd, input_section, offset);
|
||
break;
|
||
|
||
case bfd_reloc_undefined:
|
||
(*info->callbacks->undefined_symbol)
|
||
(info, name, input_bfd, input_section, offset, TRUE);
|
||
break;
|
||
|
||
case bfd_reloc_outofrange:
|
||
errmsg = _("internal error: out of range error");
|
||
goto common_error;
|
||
|
||
case bfd_reloc_notsupported:
|
||
errmsg = _("internal error: unsupported relocation error");
|
||
goto common_error;
|
||
|
||
case bfd_reloc_dangerous:
|
||
errmsg = _("internal error: dangerous error");
|
||
goto common_error;
|
||
|
||
default:
|
||
errmsg = _("internal error: unknown error");
|
||
/* fall through */
|
||
|
||
common_error:
|
||
(*info->callbacks->warning) (info, errmsg, name, input_bfd,
|
||
input_section, offset);
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
return ret;
|
||
}
|
||
|
||
/* Finish up dynamic symbol handling. We set the contents of various
|
||
dynamic sections here. */
|
||
|
||
static bfd_boolean
|
||
m32r_elf_finish_dynamic_symbol (bfd *output_bfd,
|
||
struct bfd_link_info *info,
|
||
struct elf_link_hash_entry *h,
|
||
Elf_Internal_Sym *sym)
|
||
{
|
||
struct elf_m32r_link_hash_table *htab;
|
||
bfd_byte *loc;
|
||
|
||
#ifdef DEBUG_PIC
|
||
printf ("m32r_elf_finish_dynamic_symbol()\n");
|
||
#endif
|
||
|
||
htab = m32r_elf_hash_table (info);
|
||
if (htab == NULL)
|
||
return FALSE;
|
||
|
||
if (h->plt.offset != (bfd_vma) -1)
|
||
{
|
||
asection *splt;
|
||
asection *sgot;
|
||
asection *srela;
|
||
|
||
bfd_vma plt_index;
|
||
bfd_vma got_offset;
|
||
Elf_Internal_Rela rela;
|
||
|
||
/* This symbol has an entry in the procedure linkage table. Set
|
||
it up. */
|
||
|
||
BFD_ASSERT (h->dynindx != -1);
|
||
|
||
splt = htab->root.splt;
|
||
sgot = htab->root.sgotplt;
|
||
srela = htab->root.srelplt;
|
||
BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
|
||
|
||
/* Get the index in the procedure linkage table which
|
||
corresponds to this symbol. This is the index of this symbol
|
||
in all the symbols for which we are making plt entries. The
|
||
first entry in the procedure linkage table is reserved. */
|
||
plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
|
||
|
||
/* Get the offset into the .got table of the entry that
|
||
corresponds to this function. Each .got entry is 4 bytes.
|
||
The first three are reserved. */
|
||
got_offset = (plt_index + 3) * 4;
|
||
|
||
/* Fill in the entry in the procedure linkage table. */
|
||
if (! bfd_link_pic (info))
|
||
{
|
||
bfd_put_32 (output_bfd,
|
||
(PLT_ENTRY_WORD0b
|
||
+ (((sgot->output_section->vma
|
||
+ sgot->output_offset
|
||
+ got_offset) >> 16) & 0xffff)),
|
||
splt->contents + h->plt.offset);
|
||
bfd_put_32 (output_bfd,
|
||
(PLT_ENTRY_WORD1b
|
||
+ ((sgot->output_section->vma
|
||
+ sgot->output_offset
|
||
+ got_offset) & 0xffff)),
|
||
splt->contents + h->plt.offset + 4);
|
||
bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
|
||
splt->contents + h->plt.offset + 8);
|
||
bfd_put_32 (output_bfd,
|
||
(PLT_ENTRY_WORD3
|
||
+ plt_index * sizeof (Elf32_External_Rela)),
|
||
splt->contents + h->plt.offset + 12);
|
||
bfd_put_32 (output_bfd,
|
||
(PLT_ENTRY_WORD4
|
||
+ (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
|
||
splt->contents + h->plt.offset + 16);
|
||
}
|
||
else
|
||
{
|
||
bfd_put_32 (output_bfd,
|
||
PLT_ENTRY_WORD0 + got_offset,
|
||
splt->contents + h->plt.offset);
|
||
bfd_put_32 (output_bfd, PLT_ENTRY_WORD1,
|
||
splt->contents + h->plt.offset + 4);
|
||
bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
|
||
splt->contents + h->plt.offset + 8);
|
||
bfd_put_32 (output_bfd,
|
||
(PLT_ENTRY_WORD3
|
||
+ plt_index * sizeof (Elf32_External_Rela)),
|
||
splt->contents + h->plt.offset + 12);
|
||
bfd_put_32 (output_bfd,
|
||
(PLT_ENTRY_WORD4
|
||
+ (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
|
||
splt->contents + h->plt.offset + 16);
|
||
}
|
||
|
||
/* Fill in the entry in the global offset table. */
|
||
bfd_put_32 (output_bfd,
|
||
(splt->output_section->vma
|
||
+ splt->output_offset
|
||
+ h->plt.offset
|
||
+ 12), /* same offset */
|
||
sgot->contents + got_offset);
|
||
|
||
/* Fill in the entry in the .rela.plt section. */
|
||
rela.r_offset = (sgot->output_section->vma
|
||
+ sgot->output_offset
|
||
+ got_offset);
|
||
rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_JMP_SLOT);
|
||
rela.r_addend = 0;
|
||
loc = srela->contents;
|
||
loc += plt_index * sizeof (Elf32_External_Rela);
|
||
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
|
||
|
||
if (!h->def_regular)
|
||
{
|
||
/* Mark the symbol as undefined, rather than as defined in
|
||
the .plt section. Leave the value alone. */
|
||
sym->st_shndx = SHN_UNDEF;
|
||
}
|
||
}
|
||
|
||
if (h->got.offset != (bfd_vma) -1)
|
||
{
|
||
asection *sgot;
|
||
asection *srela;
|
||
Elf_Internal_Rela rela;
|
||
|
||
/* This symbol has an entry in the global offset table. Set it
|
||
up. */
|
||
|
||
sgot = htab->root.sgot;
|
||
srela = htab->root.srelgot;
|
||
BFD_ASSERT (sgot != NULL && srela != NULL);
|
||
|
||
rela.r_offset = (sgot->output_section->vma
|
||
+ sgot->output_offset
|
||
+ (h->got.offset &~ 1));
|
||
|
||
/* If this is a -Bsymbolic link, and the symbol is defined
|
||
locally, we just want to emit a RELATIVE reloc. Likewise if
|
||
the symbol was forced to be local because of a version file.
|
||
The entry in the global offset table will already have been
|
||
initialized in the relocate_section function. */
|
||
if (bfd_link_pic (info)
|
||
&& (info->symbolic
|
||
|| h->dynindx == -1
|
||
|| h->forced_local)
|
||
&& h->def_regular)
|
||
{
|
||
rela.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
|
||
rela.r_addend = (h->root.u.def.value
|
||
+ h->root.u.def.section->output_section->vma
|
||
+ h->root.u.def.section->output_offset);
|
||
}
|
||
else
|
||
{
|
||
BFD_ASSERT ((h->got.offset & 1) == 0);
|
||
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
|
||
rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_GLOB_DAT);
|
||
rela.r_addend = 0;
|
||
}
|
||
|
||
loc = srela->contents;
|
||
loc += srela->reloc_count * sizeof (Elf32_External_Rela);
|
||
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
|
||
++srela->reloc_count;
|
||
}
|
||
|
||
if (h->needs_copy)
|
||
{
|
||
asection *s;
|
||
Elf_Internal_Rela rela;
|
||
|
||
/* This symbols needs a copy reloc. Set it up. */
|
||
|
||
BFD_ASSERT (h->dynindx != -1
|
||
&& (h->root.type == bfd_link_hash_defined
|
||
|| h->root.type == bfd_link_hash_defweak));
|
||
|
||
s = bfd_get_linker_section (htab->root.dynobj, ".rela.bss");
|
||
BFD_ASSERT (s != NULL);
|
||
|
||
rela.r_offset = (h->root.u.def.value
|
||
+ h->root.u.def.section->output_section->vma
|
||
+ h->root.u.def.section->output_offset);
|
||
rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_COPY);
|
||
rela.r_addend = 0;
|
||
loc = s->contents;
|
||
loc += s->reloc_count * sizeof (Elf32_External_Rela);
|
||
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
|
||
++s->reloc_count;
|
||
}
|
||
|
||
/* Mark some specially defined symbols as absolute. */
|
||
if (h == htab->root.hdynamic || h == htab->root.hgot)
|
||
sym->st_shndx = SHN_ABS;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
|
||
/* Finish up the dynamic sections. */
|
||
|
||
static bfd_boolean
|
||
m32r_elf_finish_dynamic_sections (bfd *output_bfd,
|
||
struct bfd_link_info *info)
|
||
{
|
||
struct elf_m32r_link_hash_table *htab;
|
||
bfd *dynobj;
|
||
asection *sdyn;
|
||
asection *sgot;
|
||
|
||
#ifdef DEBUG_PIC
|
||
printf ("m32r_elf_finish_dynamic_sections()\n");
|
||
#endif
|
||
|
||
htab = m32r_elf_hash_table (info);
|
||
if (htab == NULL)
|
||
return FALSE;
|
||
|
||
dynobj = htab->root.dynobj;
|
||
|
||
sgot = htab->root.sgotplt;
|
||
sdyn = bfd_get_linker_section (dynobj, ".dynamic");
|
||
|
||
if (htab->root.dynamic_sections_created)
|
||
{
|
||
asection *splt;
|
||
Elf32_External_Dyn *dyncon, *dynconend;
|
||
|
||
BFD_ASSERT (sgot != NULL && sdyn != NULL);
|
||
|
||
dyncon = (Elf32_External_Dyn *) sdyn->contents;
|
||
dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
|
||
|
||
for (; dyncon < dynconend; dyncon++)
|
||
{
|
||
Elf_Internal_Dyn dyn;
|
||
asection *s;
|
||
|
||
bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
|
||
|
||
switch (dyn.d_tag)
|
||
{
|
||
default:
|
||
break;
|
||
|
||
case DT_PLTGOT:
|
||
s = htab->root.sgotplt;
|
||
goto get_vma;
|
||
case DT_JMPREL:
|
||
s = htab->root.srelplt;
|
||
get_vma:
|
||
dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
|
||
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
||
break;
|
||
|
||
case DT_PLTRELSZ:
|
||
s = htab->root.srelplt;
|
||
dyn.d_un.d_val = s->size;
|
||
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Fill in the first entry in the procedure linkage table. */
|
||
splt = htab->root.splt;
|
||
if (splt && splt->size > 0)
|
||
{
|
||
if (bfd_link_pic (info))
|
||
{
|
||
bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents);
|
||
bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4);
|
||
bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8);
|
||
bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12);
|
||
bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16);
|
||
}
|
||
else
|
||
{
|
||
unsigned long addr;
|
||
/* addr = .got + 4 */
|
||
addr = sgot->output_section->vma + sgot->output_offset + 4;
|
||
bfd_put_32 (output_bfd,
|
||
PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff),
|
||
splt->contents);
|
||
bfd_put_32 (output_bfd,
|
||
PLT0_ENTRY_WORD1 | (addr & 0xffff),
|
||
splt->contents + 4);
|
||
bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8);
|
||
bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12);
|
||
bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16);
|
||
}
|
||
|
||
elf_section_data (splt->output_section)->this_hdr.sh_entsize =
|
||
PLT_ENTRY_SIZE;
|
||
}
|
||
}
|
||
|
||
/* Fill in the first three entries in the global offset table. */
|
||
if (sgot && sgot->size > 0)
|
||
{
|
||
if (sdyn == NULL)
|
||
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
|
||
else
|
||
bfd_put_32 (output_bfd,
|
||
sdyn->output_section->vma + sdyn->output_offset,
|
||
sgot->contents);
|
||
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
|
||
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
|
||
|
||
elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
|
||
/* Set the right machine number. */
|
||
|
||
static bfd_boolean
|
||
m32r_elf_object_p (bfd *abfd)
|
||
{
|
||
switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
|
||
{
|
||
default:
|
||
case E_M32R_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r); break;
|
||
case E_M32RX_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32rx); break;
|
||
case E_M32R2_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r2); break;
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
/* Store the machine number in the flags field. */
|
||
|
||
static void
|
||
m32r_elf_final_write_processing (bfd *abfd,
|
||
bfd_boolean linker ATTRIBUTE_UNUSED)
|
||
{
|
||
unsigned long val;
|
||
|
||
switch (bfd_get_mach (abfd))
|
||
{
|
||
default:
|
||
case bfd_mach_m32r: val = E_M32R_ARCH; break;
|
||
case bfd_mach_m32rx: val = E_M32RX_ARCH; break;
|
||
case bfd_mach_m32r2: val = E_M32R2_ARCH; break;
|
||
}
|
||
|
||
elf_elfheader (abfd)->e_flags &=~ EF_M32R_ARCH;
|
||
elf_elfheader (abfd)->e_flags |= val;
|
||
}
|
||
|
||
/* Function to keep M32R specific file flags. */
|
||
|
||
static bfd_boolean
|
||
m32r_elf_set_private_flags (bfd *abfd, flagword flags)
|
||
{
|
||
BFD_ASSERT (!elf_flags_init (abfd)
|
||
|| elf_elfheader (abfd)->e_flags == flags);
|
||
|
||
elf_elfheader (abfd)->e_flags = flags;
|
||
elf_flags_init (abfd) = TRUE;
|
||
return TRUE;
|
||
}
|
||
|
||
/* Merge backend specific data from an object file to the output
|
||
object file when linking. */
|
||
|
||
static bfd_boolean
|
||
m32r_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
|
||
{
|
||
bfd *obfd = info->output_bfd;
|
||
flagword out_flags;
|
||
flagword in_flags;
|
||
|
||
if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
|
||
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
|
||
return TRUE;
|
||
|
||
in_flags = elf_elfheader (ibfd)->e_flags;
|
||
out_flags = elf_elfheader (obfd)->e_flags;
|
||
|
||
if (! elf_flags_init (obfd))
|
||
{
|
||
/* If the input is the default architecture then do not
|
||
bother setting the flags for the output architecture,
|
||
instead allow future merges to do this. If no future
|
||
merges ever set these flags then they will retain their
|
||
unitialised values, which surprise surprise, correspond
|
||
to the default values. */
|
||
if (bfd_get_arch_info (ibfd)->the_default)
|
||
return TRUE;
|
||
|
||
elf_flags_init (obfd) = TRUE;
|
||
elf_elfheader (obfd)->e_flags = in_flags;
|
||
|
||
if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
|
||
&& bfd_get_arch_info (obfd)->the_default)
|
||
return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
|
||
bfd_get_mach (ibfd));
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Check flag compatibility. */
|
||
if (in_flags == out_flags)
|
||
return TRUE;
|
||
|
||
if ((in_flags & EF_M32R_ARCH) != (out_flags & EF_M32R_ARCH))
|
||
{
|
||
if ( ((in_flags & EF_M32R_ARCH) != E_M32R_ARCH)
|
||
|| ((out_flags & EF_M32R_ARCH) == E_M32R_ARCH)
|
||
|| ((in_flags & EF_M32R_ARCH) == E_M32R2_ARCH))
|
||
{
|
||
_bfd_error_handler
|
||
(_("%B: Instruction set mismatch with previous modules"), ibfd);
|
||
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Display the flags field. */
|
||
|
||
static bfd_boolean
|
||
m32r_elf_print_private_bfd_data (bfd *abfd, void * ptr)
|
||
{
|
||
FILE * file = (FILE *) ptr;
|
||
|
||
BFD_ASSERT (abfd != NULL && ptr != NULL);
|
||
|
||
_bfd_elf_print_private_bfd_data (abfd, ptr);
|
||
|
||
fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags);
|
||
|
||
switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
|
||
{
|
||
default:
|
||
case E_M32R_ARCH: fprintf (file, _(": m32r instructions")); break;
|
||
case E_M32RX_ARCH: fprintf (file, _(": m32rx instructions")); break;
|
||
case E_M32R2_ARCH: fprintf (file, _(": m32r2 instructions")); break;
|
||
}
|
||
|
||
fputc ('\n', file);
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static asection *
|
||
m32r_elf_gc_mark_hook (asection *sec,
|
||
struct bfd_link_info *info,
|
||
Elf_Internal_Rela *rel,
|
||
struct elf_link_hash_entry *h,
|
||
Elf_Internal_Sym *sym)
|
||
{
|
||
if (h != NULL)
|
||
switch (ELF32_R_TYPE (rel->r_info))
|
||
{
|
||
case R_M32R_GNU_VTINHERIT:
|
||
case R_M32R_GNU_VTENTRY:
|
||
case R_M32R_RELA_GNU_VTINHERIT:
|
||
case R_M32R_RELA_GNU_VTENTRY:
|
||
return NULL;
|
||
}
|
||
|
||
return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
|
||
}
|
||
|
||
static bfd_boolean
|
||
m32r_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
|
||
struct bfd_link_info *info ATTRIBUTE_UNUSED,
|
||
asection *sec ATTRIBUTE_UNUSED,
|
||
const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
|
||
{
|
||
/* Update the got entry reference counts for the section being removed. */
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
struct elf_link_hash_entry **sym_hashes;
|
||
bfd_signed_vma *local_got_refcounts;
|
||
const Elf_Internal_Rela *rel, *relend;
|
||
|
||
if (bfd_link_relocatable (info))
|
||
return TRUE;
|
||
|
||
elf_section_data (sec)->local_dynrel = NULL;
|
||
|
||
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
||
sym_hashes = elf_sym_hashes (abfd);
|
||
local_got_refcounts = elf_local_got_refcounts (abfd);
|
||
|
||
relend = relocs + sec->reloc_count;
|
||
for (rel = relocs; rel < relend; rel++)
|
||
{
|
||
unsigned long r_symndx;
|
||
struct elf_link_hash_entry *h = NULL;
|
||
|
||
r_symndx = ELF32_R_SYM (rel->r_info);
|
||
if (r_symndx >= symtab_hdr->sh_info)
|
||
{
|
||
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
||
while (h->root.type == bfd_link_hash_indirect
|
||
|| h->root.type == bfd_link_hash_warning)
|
||
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
||
}
|
||
|
||
switch (ELF32_R_TYPE (rel->r_info))
|
||
{
|
||
case R_M32R_GOT16_HI_ULO:
|
||
case R_M32R_GOT16_HI_SLO:
|
||
case R_M32R_GOT16_LO:
|
||
case R_M32R_GOTOFF:
|
||
case R_M32R_GOTOFF_HI_ULO:
|
||
case R_M32R_GOTOFF_HI_SLO:
|
||
case R_M32R_GOTOFF_LO:
|
||
case R_M32R_GOT24:
|
||
case R_M32R_GOTPC_HI_ULO:
|
||
case R_M32R_GOTPC_HI_SLO:
|
||
case R_M32R_GOTPC_LO:
|
||
case R_M32R_GOTPC24:
|
||
if (h != NULL)
|
||
{
|
||
if (h->got.refcount > 0)
|
||
h->got.refcount--;
|
||
}
|
||
else
|
||
{
|
||
if (local_got_refcounts && local_got_refcounts[r_symndx] > 0)
|
||
local_got_refcounts[r_symndx]--;
|
||
}
|
||
break;
|
||
|
||
case R_M32R_16_RELA:
|
||
case R_M32R_24_RELA:
|
||
case R_M32R_32_RELA:
|
||
case R_M32R_REL32:
|
||
case R_M32R_HI16_ULO_RELA:
|
||
case R_M32R_HI16_SLO_RELA:
|
||
case R_M32R_LO16_RELA:
|
||
case R_M32R_SDA16_RELA:
|
||
case R_M32R_10_PCREL_RELA:
|
||
case R_M32R_18_PCREL_RELA:
|
||
case R_M32R_26_PCREL_RELA:
|
||
if (h != NULL)
|
||
{
|
||
struct elf_m32r_link_hash_entry *eh;
|
||
struct elf_m32r_dyn_relocs **pp;
|
||
struct elf_m32r_dyn_relocs *p;
|
||
|
||
if (!bfd_link_pic (info) && h->plt.refcount > 0)
|
||
h->plt.refcount -= 1;
|
||
|
||
eh = (struct elf_m32r_link_hash_entry *) h;
|
||
|
||
for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
|
||
if (p->sec == sec)
|
||
{
|
||
if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
|
||
|| ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA
|
||
|| ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA
|
||
|| ELF32_R_TYPE (rel->r_info) == R_M32R_REL32)
|
||
p->pc_count -= 1;
|
||
p->count -= 1;
|
||
if (p->count == 0)
|
||
*pp = p->next;
|
||
break;
|
||
}
|
||
}
|
||
break;
|
||
|
||
case R_M32R_26_PLTREL:
|
||
if (h != NULL)
|
||
{
|
||
if (h->plt.refcount > 0)
|
||
h->plt.refcount--;
|
||
}
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Look through the relocs for a section during the first phase.
|
||
Since we don't do .gots or .plts, we just need to consider the
|
||
virtual table relocs for gc. */
|
||
|
||
static bfd_boolean
|
||
m32r_elf_check_relocs (bfd *abfd,
|
||
struct bfd_link_info *info,
|
||
asection *sec,
|
||
const Elf_Internal_Rela *relocs)
|
||
{
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
struct elf_link_hash_entry **sym_hashes;
|
||
const Elf_Internal_Rela *rel;
|
||
const Elf_Internal_Rela *rel_end;
|
||
struct elf_m32r_link_hash_table *htab;
|
||
bfd *dynobj;
|
||
asection *sreloc;
|
||
|
||
if (bfd_link_relocatable (info))
|
||
return TRUE;
|
||
|
||
sreloc = NULL;
|
||
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
||
sym_hashes = elf_sym_hashes (abfd);
|
||
|
||
htab = m32r_elf_hash_table (info);
|
||
if (htab == NULL)
|
||
return FALSE;
|
||
|
||
dynobj = htab->root.dynobj;
|
||
|
||
rel_end = relocs + sec->reloc_count;
|
||
for (rel = relocs; rel < rel_end; rel++)
|
||
{
|
||
int r_type;
|
||
struct elf_link_hash_entry *h;
|
||
unsigned long r_symndx;
|
||
|
||
r_symndx = ELF32_R_SYM (rel->r_info);
|
||
r_type = ELF32_R_TYPE (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.type == bfd_link_hash_indirect
|
||
|| h->root.type == bfd_link_hash_warning)
|
||
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
||
|
||
/* PR15323, ref flags aren't set for references in the same
|
||
object. */
|
||
h->root.non_ir_ref = 1;
|
||
}
|
||
|
||
/* Some relocs require a global offset table. */
|
||
if (htab->root.sgot == NULL)
|
||
{
|
||
switch (r_type)
|
||
{
|
||
case R_M32R_GOT16_HI_ULO:
|
||
case R_M32R_GOT16_HI_SLO:
|
||
case R_M32R_GOTOFF:
|
||
case R_M32R_GOTOFF_HI_ULO:
|
||
case R_M32R_GOTOFF_HI_SLO:
|
||
case R_M32R_GOTOFF_LO:
|
||
case R_M32R_GOT16_LO:
|
||
case R_M32R_GOTPC24:
|
||
case R_M32R_GOTPC_HI_ULO:
|
||
case R_M32R_GOTPC_HI_SLO:
|
||
case R_M32R_GOTPC_LO:
|
||
case R_M32R_GOT24:
|
||
if (dynobj == NULL)
|
||
htab->root.dynobj = dynobj = abfd;
|
||
if (!_bfd_elf_create_got_section (dynobj, info))
|
||
return FALSE;
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
switch (r_type)
|
||
{
|
||
case R_M32R_GOT16_HI_ULO:
|
||
case R_M32R_GOT16_HI_SLO:
|
||
case R_M32R_GOT16_LO:
|
||
case R_M32R_GOT24:
|
||
|
||
if (h != NULL)
|
||
h->got.refcount += 1;
|
||
else
|
||
{
|
||
bfd_signed_vma *local_got_refcounts;
|
||
|
||
/* This is a global offset table entry for a local
|
||
symbol. */
|
||
local_got_refcounts = elf_local_got_refcounts (abfd);
|
||
if (local_got_refcounts == NULL)
|
||
{
|
||
bfd_size_type size;
|
||
|
||
size = symtab_hdr->sh_info;
|
||
size *= sizeof (bfd_signed_vma);
|
||
local_got_refcounts = bfd_zalloc (abfd, size);
|
||
if (local_got_refcounts == NULL)
|
||
return FALSE;
|
||
elf_local_got_refcounts (abfd) = local_got_refcounts;
|
||
}
|
||
local_got_refcounts[r_symndx] += 1;
|
||
}
|
||
break;
|
||
|
||
case R_M32R_26_PLTREL:
|
||
/* This symbol requires a procedure linkage table entry. We
|
||
actually build the entry in adjust_dynamic_symbol,
|
||
because this might be a case of linking PIC code without
|
||
linking in any dynamic objects, in which case we don't
|
||
need to generate a procedure linkage table after all. */
|
||
|
||
/* If this is a local symbol, we resolve it directly without
|
||
creating a procedure linkage table entry. */
|
||
if (h == NULL)
|
||
continue;
|
||
|
||
if (h->forced_local)
|
||
break;
|
||
|
||
h->needs_plt = 1;
|
||
h->plt.refcount += 1;
|
||
break;
|
||
|
||
case R_M32R_16_RELA:
|
||
case R_M32R_24_RELA:
|
||
case R_M32R_32_RELA:
|
||
case R_M32R_REL32:
|
||
case R_M32R_HI16_ULO_RELA:
|
||
case R_M32R_HI16_SLO_RELA:
|
||
case R_M32R_LO16_RELA:
|
||
case R_M32R_SDA16_RELA:
|
||
case R_M32R_10_PCREL_RELA:
|
||
case R_M32R_18_PCREL_RELA:
|
||
case R_M32R_26_PCREL_RELA:
|
||
|
||
if (h != NULL && !bfd_link_pic (info))
|
||
{
|
||
h->non_got_ref = 1;
|
||
h->plt.refcount += 1;
|
||
}
|
||
|
||
/* If we are creating a shared library, and this is a reloc
|
||
against a global symbol, or a non PC relative reloc
|
||
against a local symbol, then we need to copy the reloc
|
||
into the shared library. However, if we are linking with
|
||
-Bsymbolic, we do not need to copy a reloc against a
|
||
global symbol which is defined in an object we are
|
||
including in the link (i.e., DEF_REGULAR is set). At
|
||
this point we have not seen all the input files, so it is
|
||
possible that DEF_REGULAR is not set now but will be set
|
||
later (it is never cleared). We account for that
|
||
possibility below by storing information in the
|
||
dyn_relocs field of the hash table entry. A similar
|
||
situation occurs when creating shared libraries and symbol
|
||
visibility changes render the symbol local.
|
||
|
||
If on the other hand, we are creating an executable, we
|
||
may need to keep relocations for symbols satisfied by a
|
||
dynamic library if we manage to avoid copy relocs for the
|
||
symbol. */
|
||
if ((bfd_link_pic (info)
|
||
&& (sec->flags & SEC_ALLOC) != 0
|
||
&& (( r_type != R_M32R_26_PCREL_RELA
|
||
&& r_type != R_M32R_18_PCREL_RELA
|
||
&& r_type != R_M32R_10_PCREL_RELA
|
||
&& r_type != R_M32R_REL32)
|
||
|| (h != NULL
|
||
&& (! info->symbolic
|
||
|| h->root.type == bfd_link_hash_defweak
|
||
|| !h->def_regular))))
|
||
|| (!bfd_link_pic (info)
|
||
&& (sec->flags & SEC_ALLOC) != 0
|
||
&& h != NULL
|
||
&& (h->root.type == bfd_link_hash_defweak
|
||
|| !h->def_regular)))
|
||
{
|
||
struct elf_m32r_dyn_relocs *p;
|
||
struct elf_m32r_dyn_relocs **head;
|
||
|
||
if (dynobj == NULL)
|
||
htab->root.dynobj = dynobj = abfd;
|
||
|
||
/* When creating a shared object, we must copy these
|
||
relocs into the output file. We create a reloc
|
||
section in dynobj and make room for the reloc. */
|
||
if (sreloc == NULL)
|
||
{
|
||
sreloc = _bfd_elf_make_dynamic_reloc_section
|
||
(sec, dynobj, 2, abfd, /*rela?*/ TRUE);
|
||
|
||
if (sreloc == NULL)
|
||
return FALSE;
|
||
}
|
||
|
||
/* If this is a global symbol, we count the number of
|
||
relocations we need for this symbol. */
|
||
if (h != NULL)
|
||
head = &((struct elf_m32r_link_hash_entry *) h)->dyn_relocs;
|
||
else
|
||
{
|
||
/* Track dynamic relocs needed for local syms too. */
|
||
asection *s;
|
||
void *vpp;
|
||
Elf_Internal_Sym *isym;
|
||
|
||
isym = bfd_sym_from_r_symndx (&htab->sym_cache,
|
||
abfd, r_symndx);
|
||
if (isym == NULL)
|
||
return FALSE;
|
||
|
||
s = bfd_section_from_elf_index (abfd, isym->st_shndx);
|
||
if (s == NULL)
|
||
s = sec;
|
||
|
||
vpp = &elf_section_data (s)->local_dynrel;
|
||
head = (struct elf_m32r_dyn_relocs **) vpp;
|
||
}
|
||
|
||
p = *head;
|
||
if (p == NULL || p->sec != sec)
|
||
{
|
||
bfd_size_type amt = sizeof (*p);
|
||
|
||
p = bfd_alloc (dynobj, amt);
|
||
if (p == NULL)
|
||
return FALSE;
|
||
p->next = *head;
|
||
*head = p;
|
||
p->sec = sec;
|
||
p->count = 0;
|
||
p->pc_count = 0;
|
||
}
|
||
|
||
p->count += 1;
|
||
if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
|
||
|| ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA
|
||
|| ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA
|
||
|| ELF32_R_TYPE (rel->r_info) == R_M32R_REL32)
|
||
p->pc_count += 1;
|
||
}
|
||
break;
|
||
|
||
/* This relocation describes the C++ object vtable hierarchy.
|
||
Reconstruct it for later use during GC. */
|
||
case R_M32R_RELA_GNU_VTINHERIT:
|
||
case R_M32R_GNU_VTINHERIT:
|
||
if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
|
||
return FALSE;
|
||
break;
|
||
|
||
/* This relocation describes which C++ vtable entries are actually
|
||
used. Record for later use during GC. */
|
||
case R_M32R_GNU_VTENTRY:
|
||
BFD_ASSERT (h != NULL);
|
||
if (h != NULL
|
||
&& !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
|
||
return FALSE;
|
||
break;
|
||
case R_M32R_RELA_GNU_VTENTRY:
|
||
BFD_ASSERT (h != NULL);
|
||
if (h != NULL
|
||
&& !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
|
||
return FALSE;
|
||
break;
|
||
}
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static const struct bfd_elf_special_section m32r_elf_special_sections[] =
|
||
{
|
||
{ STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
|
||
{ STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
|
||
{ NULL, 0, 0, 0, 0 }
|
||
};
|
||
|
||
static enum elf_reloc_type_class
|
||
m32r_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
|
||
const asection *rel_sec ATTRIBUTE_UNUSED,
|
||
const Elf_Internal_Rela *rela)
|
||
{
|
||
switch ((int) ELF32_R_TYPE (rela->r_info))
|
||
{
|
||
case R_M32R_RELATIVE: return reloc_class_relative;
|
||
case R_M32R_JMP_SLOT: return reloc_class_plt;
|
||
case R_M32R_COPY: return reloc_class_copy;
|
||
default: return reloc_class_normal;
|
||
}
|
||
}
|
||
|
||
#define ELF_ARCH bfd_arch_m32r
|
||
#define ELF_TARGET_ID M32R_ELF_DATA
|
||
#define ELF_MACHINE_CODE EM_M32R
|
||
#define ELF_MACHINE_ALT1 EM_CYGNUS_M32R
|
||
#define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */
|
||
|
||
#define TARGET_BIG_SYM m32r_elf32_vec
|
||
#define TARGET_BIG_NAME "elf32-m32r"
|
||
#define TARGET_LITTLE_SYM m32r_elf32_le_vec
|
||
#define TARGET_LITTLE_NAME "elf32-m32rle"
|
||
|
||
#define elf_info_to_howto m32r_info_to_howto
|
||
#define elf_info_to_howto_rel m32r_info_to_howto_rel
|
||
#define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section
|
||
#define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing
|
||
#define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook
|
||
#define elf_backend_relocate_section m32r_elf_relocate_section
|
||
#define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook
|
||
#define elf_backend_gc_sweep_hook m32r_elf_gc_sweep_hook
|
||
#define elf_backend_check_relocs m32r_elf_check_relocs
|
||
|
||
#define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections
|
||
#define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create
|
||
#define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections
|
||
#define elf_backend_omit_section_dynsym \
|
||
((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
|
||
#define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections
|
||
#define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol
|
||
#define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol
|
||
#define elf_backend_reloc_type_class m32r_elf_reloc_type_class
|
||
#define elf_backend_copy_indirect_symbol m32r_elf_copy_indirect_symbol
|
||
|
||
#define elf_backend_can_gc_sections 1
|
||
/*#if !USE_REL
|
||
#define elf_backend_rela_normal 1
|
||
#endif*/
|
||
#define elf_backend_can_refcount 1
|
||
#define elf_backend_want_got_plt 1
|
||
#define elf_backend_plt_readonly 1
|
||
#define elf_backend_want_plt_sym 0
|
||
#define elf_backend_got_header_size 12
|
||
#define elf_backend_dtrel_excludes_plt 1
|
||
|
||
#define elf_backend_may_use_rel_p 1
|
||
#ifdef USE_M32R_OLD_RELOC
|
||
#define elf_backend_default_use_rela_p 0
|
||
#define elf_backend_may_use_rela_p 0
|
||
#else
|
||
#define elf_backend_default_use_rela_p 1
|
||
#define elf_backend_may_use_rela_p 1
|
||
#endif
|
||
|
||
#define elf_backend_object_p m32r_elf_object_p
|
||
#define elf_backend_final_write_processing m32r_elf_final_write_processing
|
||
#define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data
|
||
#define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags
|
||
#define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data
|
||
#define elf_backend_special_sections m32r_elf_special_sections
|
||
|
||
#include "elf32-target.h"
|
||
|
||
#undef ELF_MAXPAGESIZE
|
||
#define ELF_MAXPAGESIZE 0x1000
|
||
|
||
#undef TARGET_BIG_SYM
|
||
#define TARGET_BIG_SYM m32r_elf32_linux_vec
|
||
#undef TARGET_BIG_NAME
|
||
#define TARGET_BIG_NAME "elf32-m32r-linux"
|
||
#undef TARGET_LITTLE_SYM
|
||
#define TARGET_LITTLE_SYM m32r_elf32_linux_le_vec
|
||
#undef TARGET_LITTLE_NAME
|
||
#define TARGET_LITTLE_NAME "elf32-m32rle-linux"
|
||
#undef elf32_bed
|
||
#define elf32_bed elf32_m32r_lin_bed
|
||
|
||
#include "elf32-target.h"
|