| 1 |
/* M32R-specific support for 32-bit ELF. |
| 2 |
Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, |
| 3 |
2006, 2007, 2008 Free Software Foundation, Inc. |
| 4 |
|
| 5 |
This file is part of BFD, the Binary File Descriptor library. |
| 6 |
|
| 7 |
This program is free software; you can redistribute it and/or modify |
| 8 |
it under the terms of the GNU General Public License as published by |
| 9 |
the Free Software Foundation; either version 3 of the License, or |
| 10 |
(at your option) any later version. |
| 11 |
|
| 12 |
This program is distributed in the hope that it will be useful, |
| 13 |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 |
GNU General Public License for more details. |
| 16 |
|
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You should have received a copy of the GNU General Public License |
| 18 |
along with this program; if not, write to the Free Software |
| 19 |
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 20 |
MA 02110-1301, USA. */ |
| 21 |
|
| 22 |
#include "sysdep.h" |
| 23 |
#include "bfd.h" |
| 24 |
#include "libbfd.h" |
| 25 |
#include "elf-bfd.h" |
| 26 |
#include "elf/m32r.h" |
| 27 |
|
| 28 |
#define NOP_INSN 0x7000 |
| 29 |
#define MAKE_PARALLEL(insn) ((insn) | 0x8000) |
| 30 |
|
| 31 |
/* Use REL instead of RELA to save space. |
| 32 |
This only saves space in libraries and object files, but perhaps |
| 33 |
relocs will be put in ROM? All in all though, REL relocs are a pain |
| 34 |
to work with. */ |
| 35 |
/* #define USE_REL 1 |
| 36 |
|
| 37 |
#ifndef USE_REL |
| 38 |
#define USE_REL 0 |
| 39 |
#endif */ |
| 40 |
/* Use RELA. But use REL to link old objects for backwords compatibility. */ |
| 41 |
|
| 42 |
/* Functions for the M32R ELF linker. */ |
| 43 |
|
| 44 |
/* The name of the dynamic interpreter. This is put in the .interp |
| 45 |
section. */ |
| 46 |
|
| 47 |
#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" |
| 48 |
|
| 49 |
/* The nop opcode we use. */ |
| 50 |
|
| 51 |
#define M32R_NOP 0x7000f000 |
| 52 |
|
| 53 |
#define PLT_EMPTY 0x10101010 /* RIE -> RIE */ |
| 54 |
|
| 55 |
/* The size in bytes of an entry in the procedure linkage table. */ |
| 56 |
|
| 57 |
#define PLT_ENTRY_SIZE 20 |
| 58 |
#define PLT_HEADER_SIZE 20 |
| 59 |
|
| 60 |
/* The first one entries in a procedure linkage table are reserved, |
| 61 |
and the initial contents are unimportant (we zero them out). |
| 62 |
Subsequent entries look like this. */ |
| 63 |
|
| 64 |
#define PLT0_ENTRY_WORD0 0xd6c00000 /* seth r6, #high(.got+4) */ |
| 65 |
#define PLT0_ENTRY_WORD1 0x86e60000 /* or3 r6, r6, #low(.got)+4) */ |
| 66 |
#define PLT0_ENTRY_WORD2 0x24e626c6 /* ld r4, @r6+ -> ld r6, @r6 */ |
| 67 |
#define PLT0_ENTRY_WORD3 0x1fc6f000 /* jmp r6 || pnop */ |
| 68 |
#define PLT0_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */ |
| 69 |
|
| 70 |
#define PLT0_PIC_ENTRY_WORD0 0xa4cc0004 /* ld r4, @(4,r12) */ |
| 71 |
#define PLT0_PIC_ENTRY_WORD1 0xa6cc0008 /* ld r6, @(8,r12) */ |
| 72 |
#define PLT0_PIC_ENTRY_WORD2 0x1fc6f000 /* jmp r6 || nop */ |
| 73 |
#define PLT0_PIC_ENTRY_WORD3 PLT_EMPTY /* RIE -> RIE */ |
| 74 |
#define PLT0_PIC_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */ |
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|
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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 */ |
| 78 |
#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 */ |
| 81 |
#define PLT_ENTRY_WORD3 0xe5000000 /* ld24 r5, $offset */ |
| 82 |
#define PLT_ENTRY_WORD4 0xff000000 /* bra .plt0. */ |
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|
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|
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/* Utility to actually perform an R_M32R_10_PCREL reloc. */ |
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|
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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, |
| 94 |
bfd_vma symbol_value, |
| 95 |
bfd_vma addend) |
| 96 |
{ |
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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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|
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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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|
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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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|
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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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|
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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); |
| 123 |
|
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return status; |
| 125 |
} |
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|
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/* Handle the R_M32R_10_PCREL reloc. */ |
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|
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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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|
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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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|
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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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|
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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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|
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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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|
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/* This part is from bfd_elf_generic_reloc. |
| 179 |
If we're relocating, and this an external symbol, we don't want |
| 180 |
to change anything. */ |
| 181 |
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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|
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/* Now do the reloc in the usual way. |
| 190 |
??? It would be nice to call bfd_elf_generic_reloc here, |
| 191 |
but we have partial_inplace set. bfd_elf_generic_reloc will |
| 192 |
pass the handling back to bfd_install_relocation which will install |
| 193 |
a section relative addend which is wrong. */ |
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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 (input_bfd, input_section)) |
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return bfd_reloc_outofrange; |
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|
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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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|
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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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|
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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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|
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relocation += reloc_entry->addend; |
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inplace_address = (bfd_byte *) data + reloc_entry->address; |
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|
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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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|
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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); |
| 232 |
} |
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break; |
| 234 |
case 2: |
| 235 |
{ |
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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); |
| 239 |
} |
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break; |
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default: |
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BFD_ASSERT (0); |
| 243 |
} |
| 244 |
|
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if (output_bfd != NULL) |
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reloc_entry->address += input_section->output_offset; |
| 247 |
|
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return ret; |
| 249 |
} |
| 250 |
|
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/* Handle the R_M32R_SDA16 reloc. |
| 252 |
This reloc is used to compute the address of objects in the small data area |
| 253 |
and to perform loads and stores from that area. |
| 254 |
The lower 16 bits are sign extended and added to the register specified |
| 255 |
in the instruction, which is assumed to point to _SDA_BASE_. */ |
| 256 |
|
| 257 |
static bfd_reloc_status_type |
| 258 |
m32r_elf_sda16_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
| 259 |
arelent *reloc_entry, |
| 260 |
asymbol *symbol, |
| 261 |
void * data ATTRIBUTE_UNUSED, |
| 262 |
asection *input_section, |
| 263 |
bfd *output_bfd, |
| 264 |
char **error_message ATTRIBUTE_UNUSED) |
| 265 |
{ |
| 266 |
/* This part is from bfd_elf_generic_reloc. */ |
| 267 |
if (output_bfd != NULL |
| 268 |
&& (symbol->flags & BSF_SECTION_SYM) == 0 |
| 269 |
&& (! reloc_entry->howto->partial_inplace |
| 270 |
|| reloc_entry->addend == 0)) |
| 271 |
{ |
| 272 |
reloc_entry->address += input_section->output_offset; |
| 273 |
return bfd_reloc_ok; |
| 274 |
} |
| 275 |
|
| 276 |
if (output_bfd != NULL) |
| 277 |
/* FIXME: See bfd_perform_relocation. Is this right? */ |
| 278 |
return bfd_reloc_continue; |
| 279 |
|
| 280 |
/* FIXME: not sure what to do here yet. But then again, the linker |
| 281 |
may never call us. */ |
| 282 |
abort (); |
| 283 |
} |
| 284 |
|
| 285 |
|
| 286 |
/* Handle the R_M32R_HI16_[SU]LO relocs. |
| 287 |
HI16_SLO is for the add3 and load/store with displacement instructions. |
| 288 |
HI16_ULO is for the or3 instruction. |
| 289 |
For R_M32R_HI16_SLO, the lower 16 bits are sign extended when added to |
| 290 |
the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then |
| 291 |
we must add one to the high 16 bytes (which will get subtracted off when |
| 292 |
the low 16 bits are added). |
| 293 |
These relocs have to be done in combination with an R_M32R_LO16 reloc |
| 294 |
because there is a carry from the LO16 to the HI16. Here we just save |
| 295 |
the information we need; we do the actual relocation when we see the LO16. |
| 296 |
This code is copied from the elf32-mips.c. We also support an arbitrary |
| 297 |
number of HI16 relocs to be associated with a single LO16 reloc. The |
| 298 |
assembler sorts the relocs to ensure each HI16 immediately precedes its |
| 299 |
LO16. However if there are multiple copies, the assembler may not find |
| 300 |
the real LO16 so it picks the first one it finds. */ |
| 301 |
|
| 302 |
struct m32r_hi16 |
| 303 |
{ |
| 304 |
struct m32r_hi16 *next; |
| 305 |
bfd_byte *addr; |
| 306 |
bfd_vma addend; |
| 307 |
}; |
| 308 |
|
| 309 |
/* FIXME: This should not be a static variable. */ |
| 310 |
|
| 311 |
static struct m32r_hi16 *m32r_hi16_list; |
| 312 |
|
| 313 |
static bfd_reloc_status_type |
| 314 |
m32r_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
| 315 |
arelent *reloc_entry, |
| 316 |
asymbol *symbol, |
| 317 |
void * data, |
| 318 |
asection *input_section, |
| 319 |
bfd *output_bfd, |
| 320 |
char **error_message ATTRIBUTE_UNUSED) |
| 321 |
{ |
| 322 |
bfd_reloc_status_type ret; |
| 323 |
bfd_vma relocation; |
| 324 |
struct m32r_hi16 *n; |
| 325 |
|
| 326 |
/* This part is from bfd_elf_generic_reloc. |
| 327 |
If we're relocating, and this an external symbol, we don't want |
| 328 |
to change anything. */ |
| 329 |
if (output_bfd != NULL |
| 330 |
&& (symbol->flags & BSF_SECTION_SYM) == 0 |
| 331 |
&& reloc_entry->addend == 0) |
| 332 |
{ |
| 333 |
reloc_entry->address += input_section->output_offset; |
| 334 |
return bfd_reloc_ok; |
| 335 |
} |
| 336 |
|
| 337 |
/* Sanity check the address (offset in section). */ |
| 338 |
if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
| 339 |
return bfd_reloc_outofrange; |
| 340 |
|
| 341 |
ret = bfd_reloc_ok; |
| 342 |
if (bfd_is_und_section (symbol->section) |
| 343 |
&& output_bfd == NULL) |
| 344 |
ret = bfd_reloc_undefined; |
| 345 |
|
| 346 |
if (bfd_is_com_section (symbol->section)) |
| 347 |
relocation = 0; |
| 348 |
else |
| 349 |
relocation = symbol->value; |
| 350 |
|
| 351 |
relocation += symbol->section->output_section->vma; |
| 352 |
relocation += symbol->section->output_offset; |
| 353 |
relocation += reloc_entry->addend; |
| 354 |
|
| 355 |
/* Save the information, and let LO16 do the actual relocation. */ |
| 356 |
n = bfd_malloc ((bfd_size_type) sizeof *n); |
| 357 |
if (n == NULL) |
| 358 |
return bfd_reloc_outofrange; |
| 359 |
n->addr = (bfd_byte *) data + reloc_entry->address; |
| 360 |
n->addend = relocation; |
| 361 |
n->next = m32r_hi16_list; |
| 362 |
m32r_hi16_list = n; |
| 363 |
|
| 364 |
if (output_bfd != NULL) |
| 365 |
reloc_entry->address += input_section->output_offset; |
| 366 |
|
| 367 |
return ret; |
| 368 |
} |
| 369 |
|
| 370 |
/* Handle an M32R ELF HI16 reloc. */ |
| 371 |
|
| 372 |
static void |
| 373 |
m32r_elf_relocate_hi16 (bfd *input_bfd, |
| 374 |
int type, |
| 375 |
Elf_Internal_Rela *relhi, |
| 376 |
Elf_Internal_Rela *rello, |
| 377 |
bfd_byte *contents, |
| 378 |
bfd_vma addend) |
| 379 |
{ |
| 380 |
unsigned long insn; |
| 381 |
bfd_vma addlo; |
| 382 |
|
| 383 |
insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); |
| 384 |
|
| 385 |
addlo = bfd_get_32 (input_bfd, contents + rello->r_offset); |
| 386 |
if (type == R_M32R_HI16_SLO) |
| 387 |
addlo = ((addlo & 0xffff) ^ 0x8000) - 0x8000; |
| 388 |
else |
| 389 |
addlo &= 0xffff; |
| 390 |
|
| 391 |
addend += ((insn & 0xffff) << 16) + addlo; |
| 392 |
|
| 393 |
/* Reaccount for sign extension of low part. */ |
| 394 |
if (type == R_M32R_HI16_SLO |
| 395 |
&& (addend & 0x8000) != 0) |
| 396 |
addend += 0x10000; |
| 397 |
|
| 398 |
bfd_put_32 (input_bfd, |
| 399 |
(insn & 0xffff0000) | ((addend >> 16) & 0xffff), |
| 400 |
contents + relhi->r_offset); |
| 401 |
} |
| 402 |
|
| 403 |
/* Do an R_M32R_LO16 relocation. This is a straightforward 16 bit |
| 404 |
inplace relocation; this function exists in order to do the |
| 405 |
R_M32R_HI16_[SU]LO relocation described above. */ |
| 406 |
|
| 407 |
static bfd_reloc_status_type |
| 408 |
m32r_elf_lo16_reloc (bfd *input_bfd, |
| 409 |
arelent *reloc_entry, |
| 410 |
asymbol *symbol, |
| 411 |
void * data, |
| 412 |
asection *input_section, |
| 413 |
bfd *output_bfd, |
| 414 |
char **error_message) |
| 415 |
{ |
| 416 |
/* This part is from bfd_elf_generic_reloc. |
| 417 |
If we're relocating, and this an external symbol, we don't want |
| 418 |
to change anything. */ |
| 419 |
if (output_bfd != NULL |
| 420 |
&& (symbol->flags & BSF_SECTION_SYM) == 0 |
| 421 |
&& reloc_entry->addend == 0) |
| 422 |
{ |
| 423 |
reloc_entry->address += input_section->output_offset; |
| 424 |
return bfd_reloc_ok; |
| 425 |
} |
| 426 |
|
| 427 |
if (m32r_hi16_list != NULL) |
| 428 |
{ |
| 429 |
struct m32r_hi16 *l; |
| 430 |
|
| 431 |
l = m32r_hi16_list; |
| 432 |
while (l != NULL) |
| 433 |
{ |
| 434 |
unsigned long insn; |
| 435 |
unsigned long val; |
| 436 |
unsigned long vallo; |
| 437 |
struct m32r_hi16 *next; |
| 438 |
|
| 439 |
/* Do the HI16 relocation. Note that we actually don't need |
| 440 |
to know anything about the LO16 itself, except where to |
| 441 |
find the low 16 bits of the addend needed by the LO16. */ |
| 442 |
insn = bfd_get_32 (input_bfd, l->addr); |
| 443 |
vallo = ((bfd_get_32 (input_bfd, (bfd_byte *) data + reloc_entry->address) |
| 444 |
& 0xffff) ^ 0x8000) - 0x8000; |
| 445 |
val = ((insn & 0xffff) << 16) + vallo; |
| 446 |
val += l->addend; |
| 447 |
|
| 448 |
/* Reaccount for sign extension of low part. */ |
| 449 |
if ((val & 0x8000) != 0) |
| 450 |
val += 0x10000; |
| 451 |
|
| 452 |
insn = (insn &~ (bfd_vma) 0xffff) | ((val >> 16) & 0xffff); |
| 453 |
bfd_put_32 (input_bfd, (bfd_vma) insn, l->addr); |
| 454 |
|
| 455 |
next = l->next; |
| 456 |
free (l); |
| 457 |
l = next; |
| 458 |
} |
| 459 |
|
| 460 |
m32r_hi16_list = NULL; |
| 461 |
} |
| 462 |
|
| 463 |
/* Now do the LO16 reloc in the usual way. |
| 464 |
??? It would be nice to call bfd_elf_generic_reloc here, |
| 465 |
but we have partial_inplace set. bfd_elf_generic_reloc will |
| 466 |
pass the handling back to bfd_install_relocation which will install |
| 467 |
a section relative addend which is wrong. */ |
| 468 |
return m32r_elf_generic_reloc (input_bfd, reloc_entry, symbol, data, |
| 469 |
input_section, output_bfd, error_message); |
| 470 |
} |
| 471 |
|
| 472 |
|
| 473 |
static reloc_howto_type m32r_elf_howto_table[] = |
| 474 |
{ |
| 475 |
/* This reloc does nothing. */ |
| 476 |
HOWTO (R_M32R_NONE, /* type */ |
| 477 |
0, /* rightshift */ |
| 478 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 479 |
32, /* bitsize */ |
| 480 |
FALSE, /* pc_relative */ |
| 481 |
0, /* bitpos */ |
| 482 |
complain_overflow_bitfield, /* complain_on_overflow */ |
| 483 |
bfd_elf_generic_reloc, /* special_function */ |
| 484 |
"R_M32R_NONE", /* name */ |
| 485 |
FALSE, /* partial_inplace */ |
| 486 |
0, /* src_mask */ |
| 487 |
0, /* dst_mask */ |
| 488 |
FALSE), /* pcrel_offset */ |
| 489 |
|
| 490 |
/* A 16 bit absolute relocation. */ |
| 491 |
HOWTO (R_M32R_16, /* type */ |
| 492 |
0, /* rightshift */ |
| 493 |
1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 494 |
16, /* bitsize */ |
| 495 |
FALSE, /* pc_relative */ |
| 496 |
0, /* bitpos */ |
| 497 |
complain_overflow_bitfield, /* complain_on_overflow */ |
| 498 |
m32r_elf_generic_reloc,/* special_function */ |
| 499 |
"R_M32R_16", /* name */ |
| 500 |
TRUE, /* partial_inplace */ |
| 501 |
0xffff, /* src_mask */ |
| 502 |
0xffff, /* dst_mask */ |
| 503 |
FALSE), /* pcrel_offset */ |
| 504 |
|
| 505 |
/* A 32 bit absolute relocation. */ |
| 506 |
HOWTO (R_M32R_32, /* type */ |
| 507 |
0, /* rightshift */ |
| 508 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 509 |
32, /* bitsize */ |
| 510 |
FALSE, /* pc_relative */ |
| 511 |
0, /* bitpos */ |
| 512 |
complain_overflow_bitfield, /* complain_on_overflow */ |
| 513 |
m32r_elf_generic_reloc,/* special_function */ |
| 514 |
"R_M32R_32", /* name */ |
| 515 |
TRUE, /* partial_inplace */ |
| 516 |
0xffffffff, /* src_mask */ |
| 517 |
0xffffffff, /* dst_mask */ |
| 518 |
FALSE), /* pcrel_offset */ |
| 519 |
|
| 520 |
/* A 24 bit address. */ |
| 521 |
HOWTO (R_M32R_24, /* type */ |
| 522 |
0, /* rightshift */ |
| 523 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 524 |
24, /* bitsize */ |
| 525 |
FALSE, /* pc_relative */ |
| 526 |
0, /* bitpos */ |
| 527 |
complain_overflow_unsigned, /* complain_on_overflow */ |
| 528 |
m32r_elf_generic_reloc,/* special_function */ |
| 529 |
"R_M32R_24", /* name */ |
| 530 |
TRUE, /* partial_inplace */ |
| 531 |
0xffffff, /* src_mask */ |
| 532 |
0xffffff, /* dst_mask */ |
| 533 |
FALSE), /* pcrel_offset */ |
| 534 |
|
| 535 |
/* An PC Relative 10-bit relocation, shifted by 2. |
| 536 |
This reloc is complicated because relocations are relative to pc & -4. |
| 537 |
i.e. branches in the right insn slot use the address of the left insn |
| 538 |
slot for pc. */ |
| 539 |
/* ??? It's not clear whether this should have partial_inplace set or not. |
| 540 |
Branch relaxing in the assembler can store the addend in the insn, |
| 541 |
and if bfd_install_relocation gets called the addend may get added |
| 542 |
again. */ |
| 543 |
HOWTO (R_M32R_10_PCREL, /* type */ |
| 544 |
2, /* rightshift */ |
| 545 |
1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 546 |
10, /* bitsize */ |
| 547 |
TRUE, /* pc_relative */ |
| 548 |
0, /* bitpos */ |
| 549 |
complain_overflow_signed, /* complain_on_overflow */ |
| 550 |
m32r_elf_10_pcrel_reloc, /* special_function */ |
| 551 |
"R_M32R_10_PCREL", /* name */ |
| 552 |
FALSE, /* partial_inplace */ |
| 553 |
0xff, /* src_mask */ |
| 554 |
0xff, /* dst_mask */ |
| 555 |
TRUE), /* pcrel_offset */ |
| 556 |
|
| 557 |
/* A relative 18 bit relocation, right shifted by 2. */ |
| 558 |
HOWTO (R_M32R_18_PCREL, /* type */ |
| 559 |
2, /* rightshift */ |
| 560 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 561 |
16, /* bitsize */ |
| 562 |
TRUE, /* pc_relative */ |
| 563 |
0, /* bitpos */ |
| 564 |
complain_overflow_signed, /* complain_on_overflow */ |
| 565 |
bfd_elf_generic_reloc, /* special_function */ |
| 566 |
"R_M32R_18_PCREL", /* name */ |
| 567 |
FALSE, /* partial_inplace */ |
| 568 |
0xffff, /* src_mask */ |
| 569 |
0xffff, /* dst_mask */ |
| 570 |
TRUE), /* pcrel_offset */ |
| 571 |
|
| 572 |
/* A relative 26 bit relocation, right shifted by 2. */ |
| 573 |
/* ??? It's not clear whether this should have partial_inplace set or not. |
| 574 |
Branch relaxing in the assembler can store the addend in the insn, |
| 575 |
and if bfd_install_relocation gets called the addend may get added |
| 576 |
again. */ |
| 577 |
HOWTO (R_M32R_26_PCREL, /* type */ |
| 578 |
2, /* rightshift */ |
| 579 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 580 |
26, /* bitsize */ |
| 581 |
TRUE, /* pc_relative */ |
| 582 |
0, /* bitpos */ |
| 583 |
complain_overflow_signed, /* complain_on_overflow */ |
| 584 |
bfd_elf_generic_reloc, /* special_function */ |
| 585 |
"R_M32R_26_PCREL", /* name */ |
| 586 |
FALSE, /* partial_inplace */ |
| 587 |
0xffffff, /* src_mask */ |
| 588 |
0xffffff, /* dst_mask */ |
| 589 |
TRUE), /* pcrel_offset */ |
| 590 |
|
| 591 |
/* High 16 bits of address when lower 16 is or'd in. */ |
| 592 |
HOWTO (R_M32R_HI16_ULO, /* type */ |
| 593 |
16, /* rightshift */ |
| 594 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 595 |
16, /* bitsize */ |
| 596 |
FALSE, /* pc_relative */ |
| 597 |
0, /* bitpos */ |
| 598 |
complain_overflow_dont, /* complain_on_overflow */ |
| 599 |
m32r_elf_hi16_reloc, /* special_function */ |
| 600 |
"R_M32R_HI16_ULO", /* name */ |
| 601 |
TRUE, /* partial_inplace */ |
| 602 |
0x0000ffff, /* src_mask */ |
| 603 |
0x0000ffff, /* dst_mask */ |
| 604 |
FALSE), /* pcrel_offset */ |
| 605 |
|
| 606 |
/* High 16 bits of address when lower 16 is added in. */ |
| 607 |
HOWTO (R_M32R_HI16_SLO, /* type */ |
| 608 |
16, /* rightshift */ |
| 609 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 610 |
16, /* bitsize */ |
| 611 |
FALSE, /* pc_relative */ |
| 612 |
0, /* bitpos */ |
| 613 |
complain_overflow_dont, /* complain_on_overflow */ |
| 614 |
m32r_elf_hi16_reloc, /* special_function */ |
| 615 |
"R_M32R_HI16_SLO", /* name */ |
| 616 |
TRUE, /* partial_inplace */ |
| 617 |
0x0000ffff, /* src_mask */ |
| 618 |
0x0000ffff, /* dst_mask */ |
| 619 |
FALSE), /* pcrel_offset */ |
| 620 |
|
| 621 |
/* Lower 16 bits of address. */ |
| 622 |
HOWTO (R_M32R_LO16, /* type */ |
| 623 |
0, /* rightshift */ |
| 624 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 625 |
16, /* bitsize */ |
| 626 |
FALSE, /* pc_relative */ |
| 627 |
0, /* bitpos */ |
| 628 |
complain_overflow_dont, /* complain_on_overflow */ |
| 629 |
m32r_elf_lo16_reloc, /* special_function */ |
| 630 |
"R_M32R_LO16", /* name */ |
| 631 |
TRUE, /* partial_inplace */ |
| 632 |
0x0000ffff, /* src_mask */ |
| 633 |
0x0000ffff, /* dst_mask */ |
| 634 |
FALSE), /* pcrel_offset */ |
| 635 |
|
| 636 |
/* Small data area 16 bits offset. */ |
| 637 |
HOWTO (R_M32R_SDA16, /* type */ |
| 638 |
0, /* rightshift */ |
| 639 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 640 |
16, /* bitsize */ |
| 641 |
FALSE, /* pc_relative */ |
| 642 |
0, /* bitpos */ |
| 643 |
complain_overflow_signed, /* complain_on_overflow */ |
| 644 |
m32r_elf_sda16_reloc, /* special_function */ |
| 645 |
"R_M32R_SDA16", /* name */ |
| 646 |
TRUE, /* partial_inplace */ /* FIXME: correct? */ |
| 647 |
0x0000ffff, /* src_mask */ |
| 648 |
0x0000ffff, /* dst_mask */ |
| 649 |
FALSE), /* pcrel_offset */ |
| 650 |
|
| 651 |
/* GNU extension to record C++ vtable hierarchy. */ |
| 652 |
HOWTO (R_M32R_GNU_VTINHERIT, /* type */ |
| 653 |
0, /* rightshift */ |
| 654 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 655 |
0, /* bitsize */ |
| 656 |
FALSE, /* pc_relative */ |
| 657 |
0, /* bitpos */ |
| 658 |
complain_overflow_dont, /* complain_on_overflow */ |
| 659 |
NULL, /* special_function */ |
| 660 |
"R_M32R_GNU_VTINHERIT", /* name */ |
| 661 |
FALSE, /* partial_inplace */ |
| 662 |
0, /* src_mask */ |
| 663 |
0, /* dst_mask */ |
| 664 |
FALSE), /* pcrel_offset */ |
| 665 |
|
| 666 |
/* GNU extension to record C++ vtable member usage. */ |
| 667 |
HOWTO (R_M32R_GNU_VTENTRY, /* type */ |
| 668 |
0, /* rightshift */ |
| 669 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 670 |
0, /* bitsize */ |
| 671 |
FALSE, /* pc_relative */ |
| 672 |
0, /* bitpos */ |
| 673 |
complain_overflow_dont, /* complain_on_overflow */ |
| 674 |
_bfd_elf_rel_vtable_reloc_fn, /* special_function */ |
| 675 |
"R_M32R_GNU_VTENTRY", /* name */ |
| 676 |
FALSE, /* partial_inplace */ |
| 677 |
0, /* src_mask */ |
| 678 |
0, /* dst_mask */ |
| 679 |
FALSE), /* pcrel_offset */ |
| 680 |
|
| 681 |
EMPTY_HOWTO (13), |
| 682 |
EMPTY_HOWTO (14), |
| 683 |
EMPTY_HOWTO (15), |
| 684 |
EMPTY_HOWTO (16), |
| 685 |
EMPTY_HOWTO (17), |
| 686 |
EMPTY_HOWTO (18), |
| 687 |
EMPTY_HOWTO (19), |
| 688 |
EMPTY_HOWTO (20), |
| 689 |
EMPTY_HOWTO (21), |
| 690 |
EMPTY_HOWTO (22), |
| 691 |
EMPTY_HOWTO (23), |
| 692 |
EMPTY_HOWTO (24), |
| 693 |
EMPTY_HOWTO (25), |
| 694 |
EMPTY_HOWTO (26), |
| 695 |
EMPTY_HOWTO (27), |
| 696 |
EMPTY_HOWTO (28), |
| 697 |
EMPTY_HOWTO (29), |
| 698 |
EMPTY_HOWTO (30), |
| 699 |
EMPTY_HOWTO (31), |
| 700 |
EMPTY_HOWTO (32), |
| 701 |
|
| 702 |
/* A 16 bit absolute relocation. */ |
| 703 |
HOWTO (R_M32R_16_RELA, /* type */ |
| 704 |
0, /* rightshift */ |
| 705 |
1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 706 |
16, /* bitsize */ |
| 707 |
FALSE, /* pc_relative */ |
| 708 |
0, /* bitpos */ |
| 709 |
complain_overflow_bitfield, /* complain_on_overflow */ |
| 710 |
bfd_elf_generic_reloc, /* special_function */ |
| 711 |
"R_M32R_16_RELA", /* name */ |
| 712 |
FALSE, /* partial_inplace */ |
| 713 |
0xffff, /* src_mask */ |
| 714 |
0xffff, /* dst_mask */ |
| 715 |
FALSE), /* pcrel_offset */ |
| 716 |
|
| 717 |
/* A 32 bit absolute relocation. */ |
| 718 |
HOWTO (R_M32R_32_RELA, /* type */ |
| 719 |
0, /* rightshift */ |
| 720 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 721 |
32, /* bitsize */ |
| 722 |
FALSE, /* pc_relative */ |
| 723 |
0, /* bitpos */ |
| 724 |
complain_overflow_bitfield, /* complain_on_overflow */ |
| 725 |
bfd_elf_generic_reloc,/* special_function */ |
| 726 |
"R_M32R_32_RELA", /* name */ |
| 727 |
FALSE, /* partial_inplace */ |
| 728 |
0xffffffff, /* src_mask */ |
| 729 |
0xffffffff, /* dst_mask */ |
| 730 |
FALSE), /* pcrel_offset */ |
| 731 |
|
| 732 |
/* A 24 bit address. */ |
| 733 |
HOWTO (R_M32R_24_RELA, /* type */ |
| 734 |
0, /* rightshift */ |
| 735 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 736 |
24, /* bitsize */ |
| 737 |
FALSE, /* pc_relative */ |
| 738 |
0, /* bitpos */ |
| 739 |
complain_overflow_unsigned, /* complain_on_overflow */ |
| 740 |
bfd_elf_generic_reloc,/* special_function */ |
| 741 |
"R_M32R_24_RELA", /* name */ |
| 742 |
FALSE, /* partial_inplace */ |
| 743 |
0xffffff, /* src_mask */ |
| 744 |
0xffffff, /* dst_mask */ |
| 745 |
FALSE), /* pcrel_offset */ |
| 746 |
|
| 747 |
HOWTO (R_M32R_10_PCREL_RELA, /* type */ |
| 748 |
2, /* rightshift */ |
| 749 |
1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 750 |
10, /* bitsize */ |
| 751 |
TRUE, /* pc_relative */ |
| 752 |
0, /* bitpos */ |
| 753 |
complain_overflow_signed, /* complain_on_overflow */ |
| 754 |
m32r_elf_10_pcrel_reloc, /* special_function */ |
| 755 |
"R_M32R_10_PCREL_RELA",/* name */ |
| 756 |
FALSE, /* partial_inplace */ |
| 757 |
0xff, /* src_mask */ |
| 758 |
0xff, /* dst_mask */ |
| 759 |
TRUE), /* pcrel_offset */ |
| 760 |
|
| 761 |
/* A relative 18 bit relocation, right shifted by 2. */ |
| 762 |
HOWTO (R_M32R_18_PCREL_RELA, /* type */ |
| 763 |
2, /* rightshift */ |
| 764 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 765 |
16, /* bitsize */ |
| 766 |
TRUE, /* pc_relative */ |
| 767 |
0, /* bitpos */ |
| 768 |
complain_overflow_signed, /* complain_on_overflow */ |
| 769 |
bfd_elf_generic_reloc, /* special_function */ |
| 770 |
"R_M32R_18_PCREL_RELA",/* name */ |
| 771 |
FALSE, /* partial_inplace */ |
| 772 |
0xffff, /* src_mask */ |
| 773 |
0xffff, /* dst_mask */ |
| 774 |
TRUE), /* pcrel_offset */ |
| 775 |
|
| 776 |
/* A relative 26 bit relocation, right shifted by 2. */ |
| 777 |
HOWTO (R_M32R_26_PCREL_RELA, /* type */ |
| 778 |
2, /* rightshift */ |
| 779 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 780 |
26, /* bitsize */ |
| 781 |
TRUE, /* pc_relative */ |
| 782 |
0, /* bitpos */ |
| 783 |
complain_overflow_signed, /* complain_on_overflow */ |
| 784 |
bfd_elf_generic_reloc, /* special_function */ |
| 785 |
"R_M32R_26_PCREL_RELA",/* name */ |
| 786 |
FALSE, /* partial_inplace */ |
| 787 |
0xffffff, /* src_mask */ |
| 788 |
0xffffff, /* dst_mask */ |
| 789 |
TRUE), /* pcrel_offset */ |
| 790 |
|
| 791 |
/* High 16 bits of address when lower 16 is or'd in. */ |
| 792 |
HOWTO (R_M32R_HI16_ULO_RELA, /* type */ |
| 793 |
16, /* rightshift */ |
| 794 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 795 |
16, /* bitsize */ |
| 796 |
FALSE, /* pc_relative */ |
| 797 |
0, /* bitpos */ |
| 798 |
complain_overflow_dont, /* complain_on_overflow */ |
| 799 |
bfd_elf_generic_reloc, /* special_function */ |
| 800 |
"R_M32R_HI16_ULO_RELA",/* name */ |
| 801 |
FALSE, /* partial_inplace */ |
| 802 |
0x0000ffff, /* src_mask */ |
| 803 |
0x0000ffff, /* dst_mask */ |
| 804 |
FALSE), /* pcrel_offset */ |
| 805 |
|
| 806 |
/* High 16 bits of address when lower 16 is added in. */ |
| 807 |
HOWTO (R_M32R_HI16_SLO_RELA, /* type */ |
| 808 |
16, /* rightshift */ |
| 809 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 810 |
16, /* bitsize */ |
| 811 |
FALSE, /* pc_relative */ |
| 812 |
0, /* bitpos */ |
| 813 |
complain_overflow_dont, /* complain_on_overflow */ |
| 814 |
bfd_elf_generic_reloc, /* special_function */ |
| 815 |
"R_M32R_HI16_SLO_RELA",/* name */ |
| 816 |
FALSE, /* partial_inplace */ |
| 817 |
0x0000ffff, /* src_mask */ |
| 818 |
0x0000ffff, /* dst_mask */ |
| 819 |
FALSE), /* pcrel_offset */ |
| 820 |
|
| 821 |
/* Lower 16 bits of address. */ |
| 822 |
HOWTO (R_M32R_LO16_RELA, /* type */ |
| 823 |
0, /* rightshift */ |
| 824 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 825 |
16, /* bitsize */ |
| 826 |
FALSE, /* pc_relative */ |
| 827 |
0, /* bitpos */ |
| 828 |
complain_overflow_dont, /* complain_on_overflow */ |
| 829 |
bfd_elf_generic_reloc, /* special_function */ |
| 830 |
"R_M32R_LO16_RELA", /* name */ |
| 831 |
FALSE, /* partial_inplace */ |
| 832 |
0x0000ffff, /* src_mask */ |
| 833 |
0x0000ffff, /* dst_mask */ |
| 834 |
FALSE), /* pcrel_offset */ |
| 835 |
|
| 836 |
/* Small data area 16 bits offset. */ |
| 837 |
HOWTO (R_M32R_SDA16_RELA, /* type */ |
| 838 |
0, /* rightshift */ |
| 839 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 840 |
16, /* bitsize */ |
| 841 |
FALSE, /* pc_relative */ |
| 842 |
0, /* bitpos */ |
| 843 |
complain_overflow_signed, /* complain_on_overflow */ |
| 844 |
bfd_elf_generic_reloc, /* special_function */ |
| 845 |
"R_M32R_SDA16_RELA", /* name */ |
| 846 |
TRUE, /* partial_inplace */ /* FIXME: correct? */ |
| 847 |
0x0000ffff, /* src_mask */ |
| 848 |
0x0000ffff, /* dst_mask */ |
| 849 |
FALSE), /* pcrel_offset */ |
| 850 |
|
| 851 |
/* GNU extension to record C++ vtable hierarchy. */ |
| 852 |
HOWTO (R_M32R_RELA_GNU_VTINHERIT, /* type */ |
| 853 |
0, /* rightshift */ |
| 854 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 855 |
0, /* bitsize */ |
| 856 |
FALSE, /* pc_relative */ |
| 857 |
0, /* bitpos */ |
| 858 |
complain_overflow_dont, /* complain_on_overflow */ |
| 859 |
NULL, /* special_function */ |
| 860 |
"R_M32R_RELA_GNU_VTINHERIT", /* name */ |
| 861 |
FALSE, /* partial_inplace */ |
| 862 |
0, /* src_mask */ |
| 863 |
0, /* dst_mask */ |
| 864 |
FALSE), /* pcrel_offset */ |
| 865 |
|
| 866 |
/* GNU extension to record C++ vtable member usage. */ |
| 867 |
HOWTO (R_M32R_RELA_GNU_VTENTRY, /* type */ |
| 868 |
0, /* rightshift */ |
| 869 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 870 |
0, /* bitsize */ |
| 871 |
FALSE, /* pc_relative */ |
| 872 |
0, /* bitpos */ |
| 873 |
complain_overflow_dont, /* complain_on_overflow */ |
| 874 |
_bfd_elf_rel_vtable_reloc_fn, /* special_function */ |
| 875 |
"R_M32R_RELA_GNU_VTENTRY", /* name */ |
| 876 |
FALSE, /* partial_inplace */ |
| 877 |
0, /* src_mask */ |
| 878 |
0, /* dst_mask */ |
| 879 |
FALSE), /* pcrel_offset */ |
| 880 |
|
| 881 |
/* A 32 bit PC relative relocation. */ |
| 882 |
HOWTO (R_M32R_REL32, /* type */ |
| 883 |
0, /* rightshift */ |
| 884 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 885 |
32, /* bitsize */ |
| 886 |
TRUE, /* pc_relative */ |
| 887 |
0, /* bitpos */ |
| 888 |
complain_overflow_bitfield, /* complain_on_overflow */ |
| 889 |
bfd_elf_generic_reloc,/* special_function */ |
| 890 |
"R_M32R_REL32", /* name */ |
| 891 |
FALSE, /* partial_inplace */ |
| 892 |
0xffffffff, /* src_mask */ |
| 893 |
0xffffffff, /* dst_mask */ |
| 894 |
TRUE), /* pcrel_offset */ |
| 895 |
|
| 896 |
EMPTY_HOWTO (46), |
| 897 |
EMPTY_HOWTO (47), |
| 898 |
|
| 899 |
/* Like R_M32R_24, but referring to the GOT table entry for |
| 900 |
the symbol. */ |
| 901 |
HOWTO (R_M32R_GOT24, /* type */ |
| 902 |
0, /* rightshift */ |
| 903 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 904 |
24, /* bitsize */ |
| 905 |
FALSE, /* pc_relative */ |
| 906 |
0, /* bitpos */ |
| 907 |
complain_overflow_unsigned, /* complain_on_overflow */ |
| 908 |
bfd_elf_generic_reloc, /* special_function */ |
| 909 |
"R_M32R_GOT24", /* name */ |
| 910 |
FALSE, /* partial_inplace */ |
| 911 |
0xffffff, /* src_mask */ |
| 912 |
0xffffff, /* dst_mask */ |
| 913 |
FALSE), /* pcrel_offset */ |
| 914 |
|
| 915 |
/* Like R_M32R_PCREL, but referring to the procedure linkage table |
| 916 |
entry for the symbol. */ |
| 917 |
HOWTO (R_M32R_26_PLTREL, /* type */ |
| 918 |
2, /* rightshift */ |
| 919 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 920 |
24, /* bitsize */ |
| 921 |
TRUE, /* pc_relative */ |
| 922 |
0, /* bitpos */ |
| 923 |
complain_overflow_signed, /* complain_on_overflow */ |
| 924 |
bfd_elf_generic_reloc, /* special_function */ |
| 925 |
"R_M32R_26_PLTREL", /* name */ |
| 926 |
FALSE, /* partial_inplace */ |
| 927 |
0xffffff, /* src_mask */ |
| 928 |
0xffffff, /* dst_mask */ |
| 929 |
TRUE), /* pcrel_offset */ |
| 930 |
|
| 931 |
/* This is used only by the dynamic linker. The symbol should exist |
| 932 |
both in the object being run and in some shared library. The |
| 933 |
dynamic linker copies the data addressed by the symbol from the |
| 934 |
shared library into the object, because the object being |
| 935 |
run has to have the data at some particular address. */ |
| 936 |
HOWTO (R_M32R_COPY, /* type */ |
| 937 |
0, /* rightshift */ |
| 938 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 939 |
32, /* bitsize */ |
| 940 |
FALSE, /* pc_relative */ |
| 941 |
0, /* bitpos */ |
| 942 |
complain_overflow_bitfield, /* complain_on_overflow */ |
| 943 |
bfd_elf_generic_reloc, /* special_function */ |
| 944 |
"R_M32R_COPY", /* name */ |
| 945 |
FALSE, /* partial_inplace */ |
| 946 |
0xffffffff, /* src_mask */ |
| 947 |
0xffffffff, /* dst_mask */ |
| 948 |
FALSE), /* pcrel_offset */ |
| 949 |
|
| 950 |
/* Like R_M32R_24, but used when setting global offset table |
| 951 |
entries. */ |
| 952 |
HOWTO (R_M32R_GLOB_DAT, /* type */ |
| 953 |
0, /* rightshift */ |
| 954 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 955 |
32, /* bitsize */ |
| 956 |
FALSE, /* pc_relative */ |
| 957 |
0, /* bitpos */ |
| 958 |
complain_overflow_bitfield, /* complain_on_overflow */ |
| 959 |
bfd_elf_generic_reloc, /* special_function */ |
| 960 |
"R_M32R_GLOB_DAT", /* name */ |
| 961 |
FALSE, /* partial_inplace */ |
| 962 |
0xffffffff, /* src_mask */ |
| 963 |
0xffffffff, /* dst_mask */ |
| 964 |
FALSE), /* pcrel_offset */ |
| 965 |
|
| 966 |
/* Marks a procedure linkage table entry for a symbol. */ |
| 967 |
HOWTO (R_M32R_JMP_SLOT, /* type */ |
| 968 |
0, /* rightshift */ |
| 969 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 970 |
32, /* bitsize */ |
| 971 |
FALSE, /* pc_relative */ |
| 972 |
0, /* bitpos */ |
| 973 |
complain_overflow_bitfield, /* complain_on_overflow */ |
| 974 |
bfd_elf_generic_reloc, /* special_function */ |
| 975 |
"R_M32R_JMP_SLOT", /* name */ |
| 976 |
FALSE, /* partial_inplace */ |
| 977 |
0xffffffff, /* src_mask */ |
| 978 |
0xffffffff, /* dst_mask */ |
| 979 |
FALSE), /* pcrel_offset */ |
| 980 |
|
| 981 |
/* Used only by the dynamic linker. When the object is run, this |
| 982 |
longword is set to the load address of the object, plus the |
| 983 |
addend. */ |
| 984 |
HOWTO (R_M32R_RELATIVE, /* type */ |
| 985 |
0, /* rightshift */ |
| 986 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 987 |
32, /* bitsize */ |
| 988 |
FALSE, /* pc_relative */ |
| 989 |
0, /* bitpos */ |
| 990 |
complain_overflow_bitfield, /* complain_on_overflow */ |
| 991 |
bfd_elf_generic_reloc, /* special_function */ |
| 992 |
"R_M32R_RELATIVE", /* name */ |
| 993 |
FALSE, /* partial_inplace */ |
| 994 |
0xffffffff, /* src_mask */ |
| 995 |
0xffffffff, /* dst_mask */ |
| 996 |
FALSE), /* pcrel_offset */ |
| 997 |
|
| 998 |
HOWTO (R_M32R_GOTOFF, /* type */ |
| 999 |
0, /* rightshift */ |
| 1000 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1001 |
24, /* bitsize */ |
| 1002 |
FALSE, /* pc_relative */ |
| 1003 |
0, /* bitpos */ |
| 1004 |
complain_overflow_bitfield, /* complain_on_overflow */ |
| 1005 |
bfd_elf_generic_reloc, /* special_function */ |
| 1006 |
"R_M32R_GOTOFF", /* name */ |
| 1007 |
FALSE, /* partial_inplace */ |
| 1008 |
0xffffff, /* src_mask */ |
| 1009 |
0xffffff, /* dst_mask */ |
| 1010 |
FALSE), /* pcrel_offset */ |
| 1011 |
|
| 1012 |
/* An PC Relative 24-bit relocation used when setting PIC offset |
| 1013 |
table register. */ |
| 1014 |
HOWTO (R_M32R_GOTPC24, /* type */ |
| 1015 |
0, /* rightshift */ |
| 1016 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1017 |
24, /* bitsize */ |
| 1018 |
TRUE, /* pc_relative */ |
| 1019 |
0, /* bitpos */ |
| 1020 |
complain_overflow_unsigned, /* complain_on_overflow */ |
| 1021 |
bfd_elf_generic_reloc, /* special_function */ |
| 1022 |
"R_M32R_GOTPC24", /* name */ |
| 1023 |
FALSE, /* partial_inplace */ |
| 1024 |
0xffffff, /* src_mask */ |
| 1025 |
0xffffff, /* dst_mask */ |
| 1026 |
TRUE), /* pcrel_offset */ |
| 1027 |
|
| 1028 |
/* Like R_M32R_HI16_ULO, but referring to the GOT table entry for |
| 1029 |
the symbol. */ |
| 1030 |
HOWTO (R_M32R_GOT16_HI_ULO, /* type */ |
| 1031 |
16, /* rightshift */ |
| 1032 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1033 |
16, /* bitsize */ |
| 1034 |
FALSE, /* pc_relative */ |
| 1035 |
0, /* bitpos */ |
| 1036 |
complain_overflow_dont, /* complain_on_overflow */ |
| 1037 |
bfd_elf_generic_reloc, /* special_function */ |
| 1038 |
"R_M32R_GOT16_HI_ULO", /* name */ |
| 1039 |
FALSE, /* partial_inplace */ |
| 1040 |
0x0000ffff, /* src_mask */ |
| 1041 |
0x0000ffff, /* dst_mask */ |
| 1042 |
FALSE), /* pcrel_offset */ |
| 1043 |
|
| 1044 |
/* Like R_M32R_HI16_SLO, but referring to the GOT table entry for |
| 1045 |
the symbol. */ |
| 1046 |
HOWTO (R_M32R_GOT16_HI_SLO, /* type */ |
| 1047 |
16, /* rightshift */ |
| 1048 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1049 |
16, /* bitsize */ |
| 1050 |
FALSE, /* pc_relative */ |
| 1051 |
0, /* bitpos */ |
| 1052 |
complain_overflow_dont, /* complain_on_overflow */ |
| 1053 |
bfd_elf_generic_reloc, /* special_function */ |
| 1054 |
"R_M32R_GOT16_HI_SLO", /* name */ |
| 1055 |
FALSE, /* partial_inplace */ |
| 1056 |
0x0000ffff, /* src_mask */ |
| 1057 |
0x0000ffff, /* dst_mask */ |
| 1058 |
FALSE), /* pcrel_offset */ |
| 1059 |
|
| 1060 |
/* Like R_M32R_LO16, but referring to the GOT table entry for |
| 1061 |
the symbol. */ |
| 1062 |
HOWTO (R_M32R_GOT16_LO, /* type */ |
| 1063 |
0, /* rightshift */ |
| 1064 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1065 |
16, /* bitsize */ |
| 1066 |
FALSE, /* pc_relative */ |
| 1067 |
0, /* bitpos */ |
| 1068 |
complain_overflow_dont, /* complain_on_overflow */ |
| 1069 |
bfd_elf_generic_reloc, /* special_function */ |
| 1070 |
"R_M32R_GOT16_LO", /* name */ |
| 1071 |
FALSE, /* partial_inplace */ |
| 1072 |
0x0000ffff, /* src_mask */ |
| 1073 |
0x0000ffff, /* dst_mask */ |
| 1074 |
FALSE), /* pcrel_offset */ |
| 1075 |
|
| 1076 |
/* An PC Relative relocation used when setting PIC offset table register. |
| 1077 |
Like R_M32R_HI16_ULO, but referring to the GOT table entry for |
| 1078 |
the symbol. */ |
| 1079 |
HOWTO (R_M32R_GOTPC_HI_ULO, /* type */ |
| 1080 |
16, /* rightshift */ |
| 1081 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1082 |
16, /* bitsize */ |
| 1083 |
FALSE, /* pc_relative */ |
| 1084 |
0, /* bitpos */ |
| 1085 |
complain_overflow_dont, /* complain_on_overflow */ |
| 1086 |
bfd_elf_generic_reloc, /* special_function */ |
| 1087 |
"R_M32R_GOTPC_HI_ULO", /* name */ |
| 1088 |
FALSE, /* partial_inplace */ |
| 1089 |
0x0000ffff, /* src_mask */ |
| 1090 |
0x0000ffff, /* dst_mask */ |
| 1091 |
TRUE), /* pcrel_offset */ |
| 1092 |
|
| 1093 |
/* An PC Relative relocation used when setting PIC offset table register. |
| 1094 |
Like R_M32R_HI16_SLO, but referring to the GOT table entry for |
| 1095 |
the symbol. */ |
| 1096 |
HOWTO (R_M32R_GOTPC_HI_SLO, /* type */ |
| 1097 |
16, /* rightshift */ |
| 1098 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1099 |
16, /* bitsize */ |
| 1100 |
FALSE, /* pc_relative */ |
| 1101 |
0, /* bitpos */ |
| 1102 |
complain_overflow_dont, /* complain_on_overflow */ |
| 1103 |
bfd_elf_generic_reloc, /* special_function */ |
| 1104 |
"R_M32R_GOTPC_HI_SLO", /* name */ |
| 1105 |
FALSE, /* partial_inplace */ |
| 1106 |
0x0000ffff, /* src_mask */ |
| 1107 |
0x0000ffff, /* dst_mask */ |
| 1108 |
TRUE), /* pcrel_offset */ |
| 1109 |
|
| 1110 |
/* An PC Relative relocation used when setting PIC offset table register. |
| 1111 |
Like R_M32R_LO16, but referring to the GOT table entry for |
| 1112 |
the symbol. */ |
| 1113 |
HOWTO (R_M32R_GOTPC_LO, /* type */ |
| 1114 |
0, /* rightshift */ |
| 1115 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1116 |
16, /* bitsize */ |
| 1117 |
FALSE, /* pc_relative */ |
| 1118 |
0, /* bitpos */ |
| 1119 |
complain_overflow_dont, /* complain_on_overflow */ |
| 1120 |
bfd_elf_generic_reloc, /* special_function */ |
| 1121 |
"R_M32R_GOTPC_LO", /* name */ |
| 1122 |
FALSE, /* partial_inplace */ |
| 1123 |
0x0000ffff, /* src_mask */ |
| 1124 |
0x0000ffff, /* dst_mask */ |
| 1125 |
TRUE), /* pcrel_offset */ |
| 1126 |
|
| 1127 |
HOWTO (R_M32R_GOTOFF_HI_ULO, /* type */ |
| 1128 |
16, /* rightshift */ |
| 1129 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1130 |
16, /* bitsize */ |
| 1131 |
FALSE, /* pc_relative */ |
| 1132 |
0, /* bitpos */ |
| 1133 |
complain_overflow_dont, /* complain_on_overflow */ |
| 1134 |
bfd_elf_generic_reloc, /* special_function */ |
| 1135 |
"R_M32R_GOTOFF_HI_ULO",/* name */ |
| 1136 |
FALSE, /* partial_inplace */ |
| 1137 |
0x0000ffff, /* src_mask */ |
| 1138 |
0x0000ffff, /* dst_mask */ |
| 1139 |
FALSE), /* pcrel_offset */ |
| 1140 |
|
| 1141 |
HOWTO (R_M32R_GOTOFF_HI_SLO, /* type */ |
| 1142 |
16, /* rightshift */ |
| 1143 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1144 |
16, /* bitsize */ |
| 1145 |
FALSE, /* pc_relative */ |
| 1146 |
0, /* bitpos */ |
| 1147 |
complain_overflow_dont, /* complain_on_overflow */ |
| 1148 |
bfd_elf_generic_reloc, /* special_function */ |
| 1149 |
"R_M32R_GOTOFF_HI_SLO",/* name */ |
| 1150 |
FALSE, /* partial_inplace */ |
| 1151 |
0x0000ffff, /* src_mask */ |
| 1152 |
0x0000ffff, /* dst_mask */ |
| 1153 |
FALSE), /* pcrel_offset */ |
| 1154 |
|
| 1155 |
HOWTO (R_M32R_GOTOFF_LO, /* type */ |
| 1156 |
0, /* rightshift */ |
| 1157 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1158 |
16, /* bitsize */ |
| 1159 |
FALSE, /* pc_relative */ |
| 1160 |
0, /* bitpos */ |
| 1161 |
complain_overflow_dont, /* complain_on_overflow */ |
| 1162 |
bfd_elf_generic_reloc, /* special_function */ |
| 1163 |
"R_M32R_GOTOFF_LO", /* name */ |
| 1164 |
FALSE, /* partial_inplace */ |
| 1165 |
0x0000ffff, /* src_mask */ |
| 1166 |
0x0000ffff, /* dst_mask */ |
| 1167 |
FALSE), /* pcrel_offset */ |
| 1168 |
}; |
| 1169 |
|
| 1170 |
/* Map BFD reloc types to M32R ELF reloc types. */ |
| 1171 |
|
| 1172 |
struct m32r_reloc_map |
| 1173 |
{ |
| 1174 |
bfd_reloc_code_real_type bfd_reloc_val; |
| 1175 |
unsigned char elf_reloc_val; |
| 1176 |
}; |
| 1177 |
|
| 1178 |
#ifdef USE_M32R_OLD_RELOC |
| 1179 |
static const struct m32r_reloc_map m32r_reloc_map_old[] = |
| 1180 |
{ |
| 1181 |
{ BFD_RELOC_NONE, R_M32R_NONE }, |
| 1182 |
{ BFD_RELOC_16, R_M32R_16 }, |
| 1183 |
{ BFD_RELOC_32, R_M32R_32 }, |
| 1184 |
{ BFD_RELOC_M32R_24, R_M32R_24 }, |
| 1185 |
{ BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL }, |
| 1186 |
{ BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL }, |
| 1187 |
{ BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL }, |
| 1188 |
{ BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO }, |
| 1189 |
{ BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO }, |
| 1190 |
{ BFD_RELOC_M32R_LO16, R_M32R_LO16 }, |
| 1191 |
{ BFD_RELOC_M32R_SDA16, R_M32R_SDA16 }, |
| 1192 |
{ BFD_RELOC_VTABLE_INHERIT, R_M32R_GNU_VTINHERIT }, |
| 1193 |
{ BFD_RELOC_VTABLE_ENTRY, R_M32R_GNU_VTENTRY }, |
| 1194 |
}; |
| 1195 |
#else |
| 1196 |
static const struct m32r_reloc_map m32r_reloc_map[] = |
| 1197 |
{ |
| 1198 |
{ BFD_RELOC_NONE, R_M32R_NONE }, |
| 1199 |
{ BFD_RELOC_16, R_M32R_16_RELA }, |
| 1200 |
{ BFD_RELOC_32, R_M32R_32_RELA }, |
| 1201 |
{ BFD_RELOC_M32R_24, R_M32R_24_RELA }, |
| 1202 |
{ BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL_RELA }, |
| 1203 |
{ BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL_RELA }, |
| 1204 |
{ BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL_RELA }, |
| 1205 |
{ BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO_RELA }, |
| 1206 |
{ BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO_RELA }, |
| 1207 |
{ BFD_RELOC_M32R_LO16, R_M32R_LO16_RELA }, |
| 1208 |
{ BFD_RELOC_M32R_SDA16, R_M32R_SDA16_RELA }, |
| 1209 |
{ BFD_RELOC_VTABLE_INHERIT, R_M32R_RELA_GNU_VTINHERIT }, |
| 1210 |
{ BFD_RELOC_VTABLE_ENTRY, R_M32R_RELA_GNU_VTENTRY }, |
| 1211 |
{ BFD_RELOC_32_PCREL, R_M32R_REL32 }, |
| 1212 |
|
| 1213 |
{ BFD_RELOC_M32R_GOT24, R_M32R_GOT24 }, |
| 1214 |
{ BFD_RELOC_M32R_26_PLTREL, R_M32R_26_PLTREL }, |
| 1215 |
{ BFD_RELOC_M32R_COPY, R_M32R_COPY }, |
| 1216 |
{ BFD_RELOC_M32R_GLOB_DAT, R_M32R_GLOB_DAT }, |
| 1217 |
{ BFD_RELOC_M32R_JMP_SLOT, R_M32R_JMP_SLOT }, |
| 1218 |
{ BFD_RELOC_M32R_RELATIVE, R_M32R_RELATIVE }, |
| 1219 |
{ BFD_RELOC_M32R_GOTOFF, R_M32R_GOTOFF }, |
| 1220 |
{ BFD_RELOC_M32R_GOTPC24, R_M32R_GOTPC24 }, |
| 1221 |
{ BFD_RELOC_M32R_GOT16_HI_ULO, R_M32R_GOT16_HI_ULO }, |
| 1222 |
{ BFD_RELOC_M32R_GOT16_HI_SLO, R_M32R_GOT16_HI_SLO }, |
| 1223 |
{ BFD_RELOC_M32R_GOT16_LO, R_M32R_GOT16_LO }, |
| 1224 |
{ BFD_RELOC_M32R_GOTPC_HI_ULO, R_M32R_GOTPC_HI_ULO }, |
| 1225 |
{ BFD_RELOC_M32R_GOTPC_HI_SLO, R_M32R_GOTPC_HI_SLO }, |
| 1226 |
{ BFD_RELOC_M32R_GOTPC_LO, R_M32R_GOTPC_LO }, |
| 1227 |
{ BFD_RELOC_M32R_GOTOFF_HI_ULO, R_M32R_GOTOFF_HI_ULO }, |
| 1228 |
{ BFD_RELOC_M32R_GOTOFF_HI_SLO, R_M32R_GOTOFF_HI_SLO }, |
| 1229 |
{ BFD_RELOC_M32R_GOTOFF_LO, R_M32R_GOTOFF_LO }, |
| 1230 |
}; |
| 1231 |
#endif |
| 1232 |
|
| 1233 |
static reloc_howto_type * |
| 1234 |
bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 1235 |
bfd_reloc_code_real_type code) |
| 1236 |
{ |
| 1237 |
unsigned int i; |
| 1238 |
|
| 1239 |
#ifdef USE_M32R_OLD_RELOC |
| 1240 |
for (i = 0; |
| 1241 |
i < sizeof (m32r_reloc_map_old) / sizeof (struct m32r_reloc_map); |
| 1242 |
i++) |
| 1243 |
if (m32r_reloc_map_old[i].bfd_reloc_val == code) |
| 1244 |
return &m32r_elf_howto_table[m32r_reloc_map_old[i].elf_reloc_val]; |
| 1245 |
|
| 1246 |
#else /* ! USE_M32R_OLD_RELOC */ |
| 1247 |
|
| 1248 |
for (i = 0; |
| 1249 |
i < sizeof (m32r_reloc_map) / sizeof (struct m32r_reloc_map); |
| 1250 |
i++) |
| 1251 |
if (m32r_reloc_map[i].bfd_reloc_val == code) |
| 1252 |
return &m32r_elf_howto_table[m32r_reloc_map[i].elf_reloc_val]; |
| 1253 |
#endif |
| 1254 |
|
| 1255 |
return NULL; |
| 1256 |
} |
| 1257 |
|
| 1258 |
static reloc_howto_type * |
| 1259 |
bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 1260 |
const char *r_name) |
| 1261 |
{ |
| 1262 |
unsigned int i; |
| 1263 |
|
| 1264 |
for (i = 0; |
| 1265 |
i < sizeof (m32r_elf_howto_table) / sizeof (m32r_elf_howto_table[0]); |
| 1266 |
i++) |
| 1267 |
if (m32r_elf_howto_table[i].name != NULL |
| 1268 |
&& strcasecmp (m32r_elf_howto_table[i].name, r_name) == 0) |
| 1269 |
return &m32r_elf_howto_table[i]; |
| 1270 |
|
| 1271 |
return NULL; |
| 1272 |
} |
| 1273 |
|
| 1274 |
/* Set the howto pointer for an M32R ELF reloc. */ |
| 1275 |
|
| 1276 |
static void |
| 1277 |
m32r_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, |
| 1278 |
arelent *cache_ptr, |
| 1279 |
Elf_Internal_Rela *dst) |
| 1280 |
{ |
| 1281 |
unsigned int r_type; |
| 1282 |
|
| 1283 |
r_type = ELF32_R_TYPE (dst->r_info); |
| 1284 |
BFD_ASSERT (ELF32_R_TYPE(dst->r_info) <= (unsigned int) R_M32R_GNU_VTENTRY); |
| 1285 |
cache_ptr->howto = &m32r_elf_howto_table[r_type]; |
| 1286 |
} |
| 1287 |
|
| 1288 |
static void |
| 1289 |
m32r_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
| 1290 |
arelent *cache_ptr, |
| 1291 |
Elf_Internal_Rela *dst) |
| 1292 |
{ |
| 1293 |
BFD_ASSERT ((ELF32_R_TYPE(dst->r_info) == (unsigned int) R_M32R_NONE) |
| 1294 |
|| ((ELF32_R_TYPE(dst->r_info) > (unsigned int) R_M32R_GNU_VTENTRY) |
| 1295 |
&& (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_M32R_max))); |
| 1296 |
cache_ptr->howto = &m32r_elf_howto_table[ELF32_R_TYPE(dst->r_info)]; |
| 1297 |
} |
| 1298 |
|
| 1299 |
|
| 1300 |
/* Given a BFD section, try to locate the corresponding ELF section |
| 1301 |
index. */ |
| 1302 |
|
| 1303 |
static bfd_boolean |
| 1304 |
_bfd_m32r_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, |
| 1305 |
asection *sec, |
| 1306 |
int *retval) |
| 1307 |
{ |
| 1308 |
if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) |
| 1309 |
{ |
| 1310 |
*retval = SHN_M32R_SCOMMON; |
| 1311 |
return TRUE; |
| 1312 |
} |
| 1313 |
return FALSE; |
| 1314 |
} |
| 1315 |
|
| 1316 |
/* M32R ELF uses two common sections. One is the usual one, and the other |
| 1317 |
is for small objects. All the small objects are kept together, and then |
| 1318 |
referenced via one register, which yields faster assembler code. It is |
| 1319 |
up to the compiler to emit an instruction to load the register with |
| 1320 |
_SDA_BASE. This is what we use for the small common section. This |
| 1321 |
approach is copied from elf32-mips.c. */ |
| 1322 |
static asection m32r_elf_scom_section; |
| 1323 |
static asymbol m32r_elf_scom_symbol; |
| 1324 |
static asymbol *m32r_elf_scom_symbol_ptr; |
| 1325 |
|
| 1326 |
/* Handle the special M32R section numbers that a symbol may use. */ |
| 1327 |
|
| 1328 |
static void |
| 1329 |
_bfd_m32r_elf_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym) |
| 1330 |
{ |
| 1331 |
elf_symbol_type *elfsym = (elf_symbol_type *) asym; |
| 1332 |
|
| 1333 |
switch (elfsym->internal_elf_sym.st_shndx) |
| 1334 |
{ |
| 1335 |
case SHN_M32R_SCOMMON: |
| 1336 |
if (m32r_elf_scom_section.name == NULL) |
| 1337 |
{ |
| 1338 |
/* Initialize the small common section. */ |
| 1339 |
m32r_elf_scom_section.name = ".scommon"; |
| 1340 |
m32r_elf_scom_section.flags = SEC_IS_COMMON; |
| 1341 |
m32r_elf_scom_section.output_section = &m32r_elf_scom_section; |
| 1342 |
m32r_elf_scom_section.symbol = &m32r_elf_scom_symbol; |
| 1343 |
m32r_elf_scom_section.symbol_ptr_ptr = &m32r_elf_scom_symbol_ptr; |
| 1344 |
m32r_elf_scom_symbol.name = ".scommon"; |
| 1345 |
m32r_elf_scom_symbol.flags = BSF_SECTION_SYM; |
| 1346 |
m32r_elf_scom_symbol.section = &m32r_elf_scom_section; |
| 1347 |
m32r_elf_scom_symbol_ptr = &m32r_elf_scom_symbol; |
| 1348 |
} |
| 1349 |
asym->section = &m32r_elf_scom_section; |
| 1350 |
asym->value = elfsym->internal_elf_sym.st_size; |
| 1351 |
break; |
| 1352 |
} |
| 1353 |
} |
| 1354 |
|
| 1355 |
/* Hook called by the linker routine which adds symbols from an object |
| 1356 |
file. We must handle the special M32R section numbers here. |
| 1357 |
We also keep watching for whether we need to create the sdata special |
| 1358 |
linker sections. */ |
| 1359 |
|
| 1360 |
static bfd_boolean |
| 1361 |
m32r_elf_add_symbol_hook (bfd *abfd, |
| 1362 |
struct bfd_link_info *info, |
| 1363 |
Elf_Internal_Sym *sym, |
| 1364 |
const char **namep, |
| 1365 |
flagword *flagsp ATTRIBUTE_UNUSED, |
| 1366 |
asection **secp, |
| 1367 |
bfd_vma *valp) |
| 1368 |
{ |
| 1369 |
if (! info->relocatable |
| 1370 |
&& (*namep)[0] == '_' && (*namep)[1] == 'S' |
| 1371 |
&& strcmp (*namep, "_SDA_BASE_") == 0 |
| 1372 |
&& is_elf_hash_table (info->hash)) |
| 1373 |
{ |
| 1374 |
/* This is simpler than using _bfd_elf_create_linker_section |
| 1375 |
(our needs are simpler than ppc's needs). Also |
| 1376 |
_bfd_elf_create_linker_section currently has a bug where if a .sdata |
| 1377 |
section already exists a new one is created that follows it which |
| 1378 |
screws of _SDA_BASE_ address calcs because output_offset != 0. */ |
| 1379 |
struct elf_link_hash_entry *h; |
| 1380 |
struct bfd_link_hash_entry *bh; |
| 1381 |
asection *s = bfd_get_section_by_name (abfd, ".sdata"); |
| 1382 |
|
| 1383 |
/* The following code was cobbled from elf32-ppc.c and elflink.c. */ |
| 1384 |
if (s == NULL) |
| 1385 |
{ |
| 1386 |
flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS |
| 1387 |
| SEC_IN_MEMORY | SEC_LINKER_CREATED); |
| 1388 |
|
| 1389 |
s = bfd_make_section_anyway_with_flags (abfd, ".sdata", |
| 1390 |
flags); |
| 1391 |
if (s == NULL) |
| 1392 |
return FALSE; |
| 1393 |
bfd_set_section_alignment (abfd, s, 2); |
| 1394 |
} |
| 1395 |
|
| 1396 |
bh = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", |
| 1397 |
FALSE, FALSE, FALSE); |
| 1398 |
|
| 1399 |
if ((bh == NULL || bh->type == bfd_link_hash_undefined) |
| 1400 |
&& !(_bfd_generic_link_add_one_symbol (info, |
| 1401 |
abfd, |
| 1402 |
"_SDA_BASE_", |
| 1403 |
BSF_GLOBAL, |
| 1404 |
s, |
| 1405 |
(bfd_vma) 32768, |
| 1406 |
NULL, |
| 1407 |
FALSE, |
| 1408 |
get_elf_backend_data (abfd)->collect, |
| 1409 |
&bh))) |
| 1410 |
return FALSE; |
| 1411 |
h = (struct elf_link_hash_entry *) bh; |
| 1412 |
h->type = STT_OBJECT; |
| 1413 |
} |
| 1414 |
|
| 1415 |
switch (sym->st_shndx) |
| 1416 |
{ |
| 1417 |
case SHN_M32R_SCOMMON: |
| 1418 |
*secp = bfd_make_section_old_way (abfd, ".scommon"); |
| 1419 |
(*secp)->flags |= SEC_IS_COMMON; |
| 1420 |
*valp = sym->st_size; |
| 1421 |
break; |
| 1422 |
} |
| 1423 |
|
| 1424 |
return TRUE; |
| 1425 |
} |
| 1426 |
|
| 1427 |
/* We have to figure out the SDA_BASE value, so that we can adjust the |
| 1428 |
symbol value correctly. We look up the symbol _SDA_BASE_ in the output |
| 1429 |
BFD. If we can't find it, we're stuck. We cache it in the ELF |
| 1430 |
target data. We don't need to adjust the symbol value for an |
| 1431 |
external symbol if we are producing relocatable output. */ |
| 1432 |
|
| 1433 |
static bfd_reloc_status_type |
| 1434 |
m32r_elf_final_sda_base (bfd *output_bfd, |
| 1435 |
struct bfd_link_info *info, |
| 1436 |
const char **error_message, |
| 1437 |
bfd_vma *psb) |
| 1438 |
{ |
| 1439 |
if (elf_gp (output_bfd) == 0) |
| 1440 |
{ |
| 1441 |
struct bfd_link_hash_entry *h; |
| 1442 |
|
| 1443 |
h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE); |
| 1444 |
if (h != NULL && h->type == bfd_link_hash_defined) |
| 1445 |
elf_gp (output_bfd) = (h->u.def.value |
| 1446 |
+ h->u.def.section->output_section->vma |
| 1447 |
+ h->u.def.section->output_offset); |
| 1448 |
else |
| 1449 |
{ |
| 1450 |
/* Only get the error once. */ |
| 1451 |
*psb = elf_gp (output_bfd) = 4; |
| 1452 |
*error_message = |
| 1453 |
(const char *) _("SDA relocation when _SDA_BASE_ not defined"); |
| 1454 |
return bfd_reloc_dangerous; |
| 1455 |
} |
| 1456 |
} |
| 1457 |
*psb = elf_gp (output_bfd); |
| 1458 |
return bfd_reloc_ok; |
| 1459 |
} |
| 1460 |
|
| 1461 |
/* Return size of a PLT entry. */ |
| 1462 |
#define elf_m32r_sizeof_plt(info) PLT_ENTRY_SIZE |
| 1463 |
|
| 1464 |
/* The m32r linker needs to keep track of the number of relocs that it |
| 1465 |
decides to copy in check_relocs for each symbol. This is so that |
| 1466 |
it can discard PC relative relocs if it doesn't need them when |
| 1467 |
linking with -Bsymbolic. We store the information in a field |
| 1468 |
extending the regular ELF linker hash table. */ |
| 1469 |
|
| 1470 |
/* This structure keeps track of the number of PC relative relocs we |
| 1471 |
have copied for a given symbol. */ |
| 1472 |
|
| 1473 |
struct elf_m32r_pcrel_relocs_copied |
| 1474 |
{ |
| 1475 |
/* Next section. */ |
| 1476 |
struct elf_m32r_pcrel_relocs_copied *next; |
| 1477 |
/* A section in dynobj. */ |
| 1478 |
asection *section; |
| 1479 |
/* Number of relocs copied in this section. */ |
| 1480 |
bfd_size_type count; |
| 1481 |
}; |
| 1482 |
|
| 1483 |
/* The sh linker needs to keep track of the number of relocs that it |
| 1484 |
decides to copy as dynamic relocs in check_relocs for each symbol. |
| 1485 |
This is so that it can later discard them if they are found to be |
| 1486 |
unnecessary. We store the information in a field extending the |
| 1487 |
regular ELF linker hash table. */ |
| 1488 |
|
| 1489 |
struct elf_m32r_dyn_relocs |
| 1490 |
{ |
| 1491 |
struct elf_m32r_dyn_relocs *next; |
| 1492 |
|
| 1493 |
/* The input section of the reloc. */ |
| 1494 |
asection *sec; |
| 1495 |
|
| 1496 |
/* Total number of relocs copied for the input section. */ |
| 1497 |
bfd_size_type count; |
| 1498 |
|
| 1499 |
/* Number of pc-relative relocs copied for the input section. */ |
| 1500 |
bfd_size_type pc_count; |
| 1501 |
}; |
| 1502 |
|
| 1503 |
|
| 1504 |
/* m32r ELF linker hash entry. */ |
| 1505 |
|
| 1506 |
struct elf_m32r_link_hash_entry |
| 1507 |
{ |
| 1508 |
struct elf_link_hash_entry root; |
| 1509 |
|
| 1510 |
/* Track dynamic relocs copied for this symbol. */ |
| 1511 |
struct elf_m32r_dyn_relocs *dyn_relocs; |
| 1512 |
}; |
| 1513 |
|
| 1514 |
/* m32r ELF linker hash table. */ |
| 1515 |
|
| 1516 |
struct elf_m32r_link_hash_table |
| 1517 |
{ |
| 1518 |
struct elf_link_hash_table root; |
| 1519 |
|
| 1520 |
/* Short-cuts to get to dynamic linker sections. */ |
| 1521 |
asection *sgot; |
| 1522 |
asection *sgotplt; |
| 1523 |
asection *srelgot; |
| 1524 |
asection *splt; |
| 1525 |
asection *srelplt; |
| 1526 |
asection *sdynbss; |
| 1527 |
asection *srelbss; |
| 1528 |
|
| 1529 |
/* Small local sym cache. */ |
| 1530 |
struct sym_cache sym_cache; |
| 1531 |
}; |
| 1532 |
|
| 1533 |
/* Traverse an m32r ELF linker hash table. */ |
| 1534 |
|
| 1535 |
#define m32r_elf_link_hash_traverse(table, func, info) \ |
| 1536 |
(elf_link_hash_traverse \ |
| 1537 |
(&(table)->root, \ |
| 1538 |
(bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
| 1539 |
(info))) |
| 1540 |
|
| 1541 |
/* Get the m32r ELF linker hash table from a link_info structure. */ |
| 1542 |
|
| 1543 |
|
| 1544 |
#define m32r_elf_hash_table(p) \ |
| 1545 |
((struct elf_m32r_link_hash_table *) ((p)->hash)) |
| 1546 |
|
| 1547 |
/* Create an entry in an m32r ELF linker hash table. */ |
| 1548 |
|
| 1549 |
static struct bfd_hash_entry * |
| 1550 |
m32r_elf_link_hash_newfunc (struct bfd_hash_entry *entry, |
| 1551 |
struct bfd_hash_table *table, |
| 1552 |
const char *string) |
| 1553 |
{ |
| 1554 |
struct elf_m32r_link_hash_entry *ret = |
| 1555 |
(struct elf_m32r_link_hash_entry *) entry; |
| 1556 |
|
| 1557 |
/* Allocate the structure if it has not already been allocated by a |
| 1558 |
subclass. */ |
| 1559 |
if (ret == NULL) |
| 1560 |
ret = bfd_hash_allocate (table, |
| 1561 |
sizeof (struct elf_m32r_link_hash_entry)); |
| 1562 |
if (ret == NULL) |
| 1563 |
return NULL; |
| 1564 |
|
| 1565 |
/* Call the allocation method of the superclass. */ |
| 1566 |
ret = ((struct elf_m32r_link_hash_entry *) |
| 1567 |
_bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
| 1568 |
table, string)); |
| 1569 |
if (ret != NULL) |
| 1570 |
{ |
| 1571 |
struct elf_m32r_link_hash_entry *eh; |
| 1572 |
|
| 1573 |
eh = (struct elf_m32r_link_hash_entry *) ret; |
| 1574 |
eh->dyn_relocs = NULL; |
| 1575 |
} |
| 1576 |
|
| 1577 |
return (struct bfd_hash_entry *) ret; |
| 1578 |
} |
| 1579 |
|
| 1580 |
/* Create an m32r ELF linker hash table. */ |
| 1581 |
|
| 1582 |
static struct bfd_link_hash_table * |
| 1583 |
m32r_elf_link_hash_table_create (bfd *abfd) |
| 1584 |
{ |
| 1585 |
struct elf_m32r_link_hash_table *ret; |
| 1586 |
bfd_size_type amt = sizeof (struct elf_m32r_link_hash_table); |
| 1587 |
|
| 1588 |
ret = bfd_malloc (amt); |
| 1589 |
if (ret == NULL) |
| 1590 |
return NULL; |
| 1591 |
|
| 1592 |
if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
| 1593 |
m32r_elf_link_hash_newfunc, |
| 1594 |
sizeof (struct elf_m32r_link_hash_entry))) |
| 1595 |
{ |
| 1596 |
free (ret); |
| 1597 |
return NULL; |
| 1598 |
} |
| 1599 |
|
| 1600 |
ret->sgot = NULL; |
| 1601 |
ret->sgotplt = NULL; |
| 1602 |
ret->srelgot = NULL; |
| 1603 |
ret->splt = NULL; |
| 1604 |
ret->srelplt = NULL; |
| 1605 |
ret->sdynbss = NULL; |
| 1606 |
ret->srelbss = NULL; |
| 1607 |
ret->sym_cache.abfd = NULL; |
| 1608 |
|
| 1609 |
return &ret->root.root; |
| 1610 |
} |
| 1611 |
|
| 1612 |
/* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up |
| 1613 |
shortcuts to them in our hash table. */ |
| 1614 |
|
| 1615 |
static bfd_boolean |
| 1616 |
create_got_section (bfd *dynobj, struct bfd_link_info *info) |
| 1617 |
{ |
| 1618 |
struct elf_m32r_link_hash_table *htab; |
| 1619 |
|
| 1620 |
if (! _bfd_elf_create_got_section (dynobj, info)) |
| 1621 |
return FALSE; |
| 1622 |
|
| 1623 |
htab = m32r_elf_hash_table (info); |
| 1624 |
htab->sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 1625 |
htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); |
| 1626 |
htab->srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); |
| 1627 |
if (! htab->sgot || ! htab->sgotplt || ! htab->srelgot) |
| 1628 |
abort (); |
| 1629 |
|
| 1630 |
return TRUE; |
| 1631 |
} |
| 1632 |
|
| 1633 |
/* Create dynamic sections when linking against a dynamic object. */ |
| 1634 |
|
| 1635 |
static bfd_boolean |
| 1636 |
m32r_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) |
| 1637 |
{ |
| 1638 |
struct elf_m32r_link_hash_table *htab; |
| 1639 |
flagword flags, pltflags; |
| 1640 |
asection *s; |
| 1641 |
const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
| 1642 |
int ptralign = 2; /* 32bit */ |
| 1643 |
|
| 1644 |
htab = m32r_elf_hash_table (info); |
| 1645 |
|
| 1646 |
/* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and |
| 1647 |
.rel[a].bss sections. */ |
| 1648 |
flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
| 1649 |
| SEC_LINKER_CREATED); |
| 1650 |
|
| 1651 |
pltflags = flags; |
| 1652 |
pltflags |= SEC_CODE; |
| 1653 |
if (bed->plt_not_loaded) |
| 1654 |
pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS); |
| 1655 |
if (bed->plt_readonly) |
| 1656 |
pltflags |= SEC_READONLY; |
| 1657 |
|
| 1658 |
s = bfd_make_section_with_flags (abfd, ".plt", pltflags); |
| 1659 |
htab->splt = s; |
| 1660 |
if (s == NULL |
| 1661 |
|| ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) |
| 1662 |
return FALSE; |
| 1663 |
|
| 1664 |
if (bed->want_plt_sym) |
| 1665 |
{ |
| 1666 |
/* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the |
| 1667 |
.plt section. */ |
| 1668 |
struct bfd_link_hash_entry *bh = NULL; |
| 1669 |
struct elf_link_hash_entry *h; |
| 1670 |
|
| 1671 |
if (! (_bfd_generic_link_add_one_symbol |
| 1672 |
(info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, |
| 1673 |
(bfd_vma) 0, NULL, FALSE, |
| 1674 |
get_elf_backend_data (abfd)->collect, &bh))) |
| 1675 |
return FALSE; |
| 1676 |
h = (struct elf_link_hash_entry *) bh; |
| 1677 |
h->def_regular = 1; |
| 1678 |
h->type = STT_OBJECT; |
| 1679 |
htab->root.hplt = h; |
| 1680 |
|
| 1681 |
if (info->shared |
| 1682 |
&& ! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 1683 |
return FALSE; |
| 1684 |
} |
| 1685 |
|
| 1686 |
s = bfd_make_section_with_flags (abfd, |
| 1687 |
bed->default_use_rela_p ? ".rela.plt" : ".rel.plt", |
| 1688 |
flags | SEC_READONLY); |
| 1689 |
htab->srelplt = s; |
| 1690 |
if (s == NULL |
| 1691 |
|| ! bfd_set_section_alignment (abfd, s, ptralign)) |
| 1692 |
return FALSE; |
| 1693 |
|
| 1694 |
if (htab->sgot == NULL |
| 1695 |
&& ! create_got_section (abfd, info)) |
| 1696 |
return FALSE; |
| 1697 |
|
| 1698 |
{ |
| 1699 |
const char *secname; |
| 1700 |
char *relname; |
| 1701 |
flagword secflags; |
| 1702 |
asection *sec; |
| 1703 |
|
| 1704 |
for (sec = abfd->sections; sec; sec = sec->next) |
| 1705 |
{ |
| 1706 |
secflags = bfd_get_section_flags (abfd, sec); |
| 1707 |
if ((secflags & (SEC_DATA | SEC_LINKER_CREATED)) |
| 1708 |
|| ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS)) |
| 1709 |
continue; |
| 1710 |
secname = bfd_get_section_name (abfd, sec); |
| 1711 |
relname = bfd_malloc ((bfd_size_type) strlen (secname) + 6); |
| 1712 |
strcpy (relname, ".rela"); |
| 1713 |
strcat (relname, secname); |
| 1714 |
if (bfd_get_section_by_name (abfd, secname)) |
| 1715 |
continue; |
| 1716 |
s = bfd_make_section_with_flags (abfd, relname, |
| 1717 |
flags | SEC_READONLY); |
| 1718 |
if (s == NULL |
| 1719 |
|| ! bfd_set_section_alignment (abfd, s, ptralign)) |
| 1720 |
return FALSE; |
| 1721 |
} |
| 1722 |
} |
| 1723 |
|
| 1724 |
if (bed->want_dynbss) |
| 1725 |
{ |
| 1726 |
/* The .dynbss section is a place to put symbols which are defined |
| 1727 |
by dynamic objects, are referenced by regular objects, and are |
| 1728 |
not functions. We must allocate space for them in the process |
| 1729 |
image and use a R_*_COPY reloc to tell the dynamic linker to |
| 1730 |
initialize them at run time. The linker script puts the .dynbss |
| 1731 |
section into the .bss section of the final image. */ |
| 1732 |
s = bfd_make_section_with_flags (abfd, ".dynbss", |
| 1733 |
SEC_ALLOC | SEC_LINKER_CREATED); |
| 1734 |
htab->sdynbss = s; |
| 1735 |
if (s == NULL) |
| 1736 |
return FALSE; |
| 1737 |
/* The .rel[a].bss section holds copy relocs. This section is not |
| 1738 |
normally needed. We need to create it here, though, so that the |
| 1739 |
linker will map it to an output section. We can't just create it |
| 1740 |
only if we need it, because we will not know whether we need it |
| 1741 |
until we have seen all the input files, and the first time the |
| 1742 |
main linker code calls BFD after examining all the input files |
| 1743 |
(size_dynamic_sections) the input sections have already been |
| 1744 |
mapped to the output sections. If the section turns out not to |
| 1745 |
be needed, we can discard it later. We will never need this |
| 1746 |
section when generating a shared object, since they do not use |
| 1747 |
copy relocs. */ |
| 1748 |
if (! info->shared) |
| 1749 |
{ |
| 1750 |
s = bfd_make_section_with_flags (abfd, |
| 1751 |
(bed->default_use_rela_p |
| 1752 |
? ".rela.bss" : ".rel.bss"), |
| 1753 |
flags | SEC_READONLY); |
| 1754 |
htab->srelbss = s; |
| 1755 |
if (s == NULL |
| 1756 |
|| ! bfd_set_section_alignment (abfd, s, ptralign)) |
| 1757 |
return FALSE; |
| 1758 |
} |
| 1759 |
} |
| 1760 |
|
| 1761 |
return TRUE; |
| 1762 |
} |
| 1763 |
|
| 1764 |
/* Copy the extra info we tack onto an elf_link_hash_entry. */ |
| 1765 |
|
| 1766 |
static void |
| 1767 |
m32r_elf_copy_indirect_symbol (struct bfd_link_info *info, |
| 1768 |
struct elf_link_hash_entry *dir, |
| 1769 |
struct elf_link_hash_entry *ind) |
| 1770 |
{ |
| 1771 |
struct elf_m32r_link_hash_entry * edir; |
| 1772 |
struct elf_m32r_link_hash_entry * eind; |
| 1773 |
|
| 1774 |
edir = (struct elf_m32r_link_hash_entry *) dir; |
| 1775 |
eind = (struct elf_m32r_link_hash_entry *) ind; |
| 1776 |
|
| 1777 |
if (eind->dyn_relocs != NULL) |
| 1778 |
{ |
| 1779 |
if (edir->dyn_relocs != NULL) |
| 1780 |
{ |
| 1781 |
struct elf_m32r_dyn_relocs **pp; |
| 1782 |
struct elf_m32r_dyn_relocs *p; |
| 1783 |
|
| 1784 |
/* Add reloc counts against the indirect sym to the direct sym |
| 1785 |
list. Merge any entries against the same section. */ |
| 1786 |
for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) |
| 1787 |
{ |
| 1788 |
struct elf_m32r_dyn_relocs *q; |
| 1789 |
|
| 1790 |
for (q = edir->dyn_relocs; q != NULL; q = q->next) |
| 1791 |
if (q->sec == p->sec) |
| 1792 |
{ |
| 1793 |
q->pc_count += p->pc_count; |
| 1794 |
q->count += p->count; |
| 1795 |
*pp = p->next; |
| 1796 |
break; |
| 1797 |
} |
| 1798 |
if (q == NULL) |
| 1799 |
pp = &p->next; |
| 1800 |
} |
| 1801 |
*pp = edir->dyn_relocs; |
| 1802 |
} |
| 1803 |
|
| 1804 |
edir->dyn_relocs = eind->dyn_relocs; |
| 1805 |
eind->dyn_relocs = NULL; |
| 1806 |
} |
| 1807 |
|
| 1808 |
_bfd_elf_link_hash_copy_indirect (info, dir, ind); |
| 1809 |
} |
| 1810 |
|
| 1811 |
|
| 1812 |
/* Adjust a symbol defined by a dynamic object and referenced by a |
| 1813 |
regular object. The current definition is in some section of the |
| 1814 |
dynamic object, but we're not including those sections. We have to |
| 1815 |
change the definition to something the rest of the link can |
| 1816 |
understand. */ |
| 1817 |
|
| 1818 |
static bfd_boolean |
| 1819 |
m32r_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
| 1820 |
struct elf_link_hash_entry *h) |
| 1821 |
{ |
| 1822 |
struct elf_m32r_link_hash_table *htab; |
| 1823 |
struct elf_m32r_link_hash_entry *eh; |
| 1824 |
struct elf_m32r_dyn_relocs *p; |
| 1825 |
bfd *dynobj; |
| 1826 |
asection *s; |
| 1827 |
|
| 1828 |
#ifdef DEBUG_PIC |
| 1829 |
printf ("m32r_elf_adjust_dynamic_symbol()\n"); |
| 1830 |
#endif |
| 1831 |
|
| 1832 |
dynobj = elf_hash_table (info)->dynobj; |
| 1833 |
|
| 1834 |
/* Make sure we know what is going on here. */ |
| 1835 |
BFD_ASSERT (dynobj != NULL |
| 1836 |
&& (h->needs_plt |
| 1837 |
|| h->u.weakdef != NULL |
| 1838 |
|| (h->def_dynamic |
| 1839 |
&& h->ref_regular |
| 1840 |
&& !h->def_regular))); |
| 1841 |
|
| 1842 |
/* If this is a function, put it in the procedure linkage table. We |
| 1843 |
will fill in the contents of the procedure linkage table later, |
| 1844 |
when we know the address of the .got section. */ |
| 1845 |
if (h->type == STT_FUNC |
| 1846 |
|| h->needs_plt) |
| 1847 |
{ |
| 1848 |
if (! info->shared |
| 1849 |
&& !h->def_dynamic |
| 1850 |
&& !h->ref_dynamic |
| 1851 |
&& h->root.type != bfd_link_hash_undefweak |
| 1852 |
&& h->root.type != bfd_link_hash_undefined) |
| 1853 |
{ |
| 1854 |
/* This case can occur if we saw a PLT reloc in an input |
| 1855 |
file, but the symbol was never referred to by a dynamic |
| 1856 |
object. In such a case, we don't actually need to build |
| 1857 |
a procedure linkage table, and we can just do a PCREL |
| 1858 |
reloc instead. */ |
| 1859 |
h->plt.offset = (bfd_vma) -1; |
| 1860 |
h->needs_plt = 0; |
| 1861 |
} |
| 1862 |
|
| 1863 |
return TRUE; |
| 1864 |
} |
| 1865 |
else |
| 1866 |
h->plt.offset = (bfd_vma) -1; |
| 1867 |
|
| 1868 |
/* If this is a weak symbol, and there is a real definition, the |
| 1869 |
processor independent code will have arranged for us to see the |
| 1870 |
real definition first, and we can just use the same value. */ |
| 1871 |
if (h->u.weakdef != NULL) |
| 1872 |
{ |
| 1873 |
BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
| 1874 |
|| h->u.weakdef->root.type == bfd_link_hash_defweak); |
| 1875 |
h->root.u.def.section = h->u.weakdef->root.u.def.section; |
| 1876 |
h->root.u.def.value = h->u.weakdef->root.u.def.value; |
| 1877 |
return TRUE; |
| 1878 |
} |
| 1879 |
|
| 1880 |
/* This is a reference to a symbol defined by a dynamic object which |
| 1881 |
is not a function. */ |
| 1882 |
|
| 1883 |
/* If we are creating a shared library, we must presume that the |
| 1884 |
only references to the symbol are via the global offset table. |
| 1885 |
For such cases we need not do anything here; the relocations will |
| 1886 |
be handled correctly by relocate_section. */ |
| 1887 |
if (info->shared) |
| 1888 |
return TRUE; |
| 1889 |
|
| 1890 |
/* If there are no references to this symbol that do not use the |
| 1891 |
GOT, we don't need to generate a copy reloc. */ |
| 1892 |
if (!h->non_got_ref) |
| 1893 |
return TRUE; |
| 1894 |
|
| 1895 |
/* If -z nocopyreloc was given, we won't generate them either. */ |
| 1896 |
if (info->nocopyreloc) |
| 1897 |
{ |
| 1898 |
h->non_got_ref = 0; |
| 1899 |
return TRUE; |
| 1900 |
} |
| 1901 |
|
| 1902 |
eh = (struct elf_m32r_link_hash_entry *) h; |
| 1903 |
for (p = eh->dyn_relocs; p != NULL; p = p->next) |
| 1904 |
{ |
| 1905 |
s = p->sec->output_section; |
| 1906 |
if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0) |
| 1907 |
break; |
| 1908 |
} |
| 1909 |
|
| 1910 |
/* If we didn't find any dynamic relocs in sections which needs the |
| 1911 |
copy reloc, then we'll be keeping the dynamic relocs and avoiding |
| 1912 |
the copy reloc. */ |
| 1913 |
if (p == NULL) |
| 1914 |
{ |
| 1915 |
h->non_got_ref = 0; |
| 1916 |
return TRUE; |
| 1917 |
} |
| 1918 |
|
| 1919 |
if (h->size == 0) |
| 1920 |
{ |
| 1921 |
(*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), |
| 1922 |
h->root.root.string); |
| 1923 |
return TRUE; |
| 1924 |
} |
| 1925 |
|
| 1926 |
/* We must allocate the symbol in our .dynbss section, which will |
| 1927 |
become part of the .bss section of the executable. There will be |
| 1928 |
an entry for this symbol in the .dynsym section. The dynamic |
| 1929 |
object will contain position independent code, so all references |
| 1930 |
from the dynamic object to this symbol will go through the global |
| 1931 |
offset table. The dynamic linker will use the .dynsym entry to |
| 1932 |
determine the address it must put in the global offset table, so |
| 1933 |
both the dynamic object and the regular object will refer to the |
| 1934 |
same memory location for the variable. */ |
| 1935 |
|
| 1936 |
htab = m32r_elf_hash_table (info); |
| 1937 |
s = htab->sdynbss; |
| 1938 |
BFD_ASSERT (s != NULL); |
| 1939 |
|
| 1940 |
/* We must generate a R_M32R_COPY reloc to tell the dynamic linker |
| 1941 |
to copy the initial value out of the dynamic object and into the |
| 1942 |
runtime process image. We need to remember the offset into the |
| 1943 |
.rela.bss section we are going to use. */ |
| 1944 |
if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
| 1945 |
{ |
| 1946 |
asection *srel; |
| 1947 |
|
| 1948 |
srel = htab->srelbss; |
| 1949 |
BFD_ASSERT (srel != NULL); |
| 1950 |
srel->size += sizeof (Elf32_External_Rela); |
| 1951 |
h->needs_copy = 1; |
| 1952 |
} |
| 1953 |
|
| 1954 |
return _bfd_elf_adjust_dynamic_copy (h, s); |
| 1955 |
} |
| 1956 |
|
| 1957 |
/* Allocate space in .plt, .got and associated reloc sections for |
| 1958 |
dynamic relocs. */ |
| 1959 |
|
| 1960 |
static bfd_boolean |
| 1961 |
allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
| 1962 |
{ |
| 1963 |
struct bfd_link_info *info; |
| 1964 |
struct elf_m32r_link_hash_table *htab; |
| 1965 |
struct elf_m32r_link_hash_entry *eh; |
| 1966 |
struct elf_m32r_dyn_relocs *p; |
| 1967 |
|
| 1968 |
if (h->root.type == bfd_link_hash_indirect) |
| 1969 |
return TRUE; |
| 1970 |
|
| 1971 |
if (h->root.type == bfd_link_hash_warning) |
| 1972 |
/* When warning symbols are created, they **replace** the "real" |
| 1973 |
entry in the hash table, thus we never get to see the real |
| 1974 |
symbol in a hash traversal. So look at it now. */ |
| 1975 |
h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 1976 |
|
| 1977 |
info = (struct bfd_link_info *) inf; |
| 1978 |
htab = m32r_elf_hash_table (info); |
| 1979 |
|
| 1980 |
eh = (struct elf_m32r_link_hash_entry *) h; |
| 1981 |
|
| 1982 |
if (htab->root.dynamic_sections_created |
| 1983 |
&& h->plt.refcount > 0) |
| 1984 |
{ |
| 1985 |
/* Make sure this symbol is output as a dynamic symbol. |
| 1986 |
Undefined weak syms won't yet be marked as dynamic. */ |
| 1987 |
if (h->dynindx == -1 |
| 1988 |
&& !h->forced_local) |
| 1989 |
{ |
| 1990 |
if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 1991 |
return FALSE; |
| 1992 |
} |
| 1993 |
|
| 1994 |
if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) |
| 1995 |
{ |
| 1996 |
asection *s = htab->splt; |
| 1997 |
|
| 1998 |
/* If this is the first .plt entry, make room for the special |
| 1999 |
first entry. */ |
| 2000 |
if (s->size == 0) |
| 2001 |
s->size += PLT_ENTRY_SIZE; |
| 2002 |
|
| 2003 |
h->plt.offset = s->size; |
| 2004 |
|
| 2005 |
/* If this symbol is not defined in a regular file, and we are |
| 2006 |
not generating a shared library, then set the symbol to this |
| 2007 |
location in the .plt. This is required to make function |
| 2008 |
pointers compare as equal between the normal executable and |
| 2009 |
the shared library. */ |
| 2010 |
if (! info->shared |
| 2011 |
&& !h->def_regular) |
| 2012 |
{ |
| 2013 |
h->root.u.def.section = s; |
| 2014 |
h->root.u.def.value = h->plt.offset; |
| 2015 |
} |
| 2016 |
|
| 2017 |
/* Make room for this entry. */ |
| 2018 |
s->size += PLT_ENTRY_SIZE; |
| 2019 |
|
| 2020 |
/* We also need to make an entry in the .got.plt section, which |
| 2021 |
will be placed in the .got section by the linker script. */ |
| 2022 |
htab->sgotplt->size += 4; |
| 2023 |
|
| 2024 |
/* We also need to make an entry in the .rel.plt section. */ |
| 2025 |
htab->srelplt->size += sizeof (Elf32_External_Rela); |
| 2026 |
} |
| 2027 |
else |
| 2028 |
{ |
| 2029 |
h->plt.offset = (bfd_vma) -1; |
| 2030 |
h->needs_plt = 0; |
| 2031 |
} |
| 2032 |
} |
| 2033 |
else |
| 2034 |
{ |
| 2035 |
h->plt.offset = (bfd_vma) -1; |
| 2036 |
h->needs_plt = 0; |
| 2037 |
} |
| 2038 |
|
| 2039 |
if (h->got.refcount > 0) |
| 2040 |
{ |
| 2041 |
asection *s; |
| 2042 |
bfd_boolean dyn; |
| 2043 |
|
| 2044 |
/* Make sure this symbol is output as a dynamic symbol. |
| 2045 |
Undefined weak syms won't yet be marked as dynamic. */ |
| 2046 |
if (h->dynindx == -1 |
| 2047 |
&& !h->forced_local) |
| 2048 |
{ |
| 2049 |
if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 2050 |
return FALSE; |
| 2051 |
} |
| 2052 |
|
| 2053 |
s = htab->sgot; |
| 2054 |
|
| 2055 |
h->got.offset = s->size; |
| 2056 |
s->size += 4; |
| 2057 |
dyn = htab->root.dynamic_sections_created; |
| 2058 |
if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)) |
| 2059 |
htab->srelgot->size += sizeof (Elf32_External_Rela); |
| 2060 |
} |
| 2061 |
else |
| 2062 |
h->got.offset = (bfd_vma) -1; |
| 2063 |
|
| 2064 |
if (eh->dyn_relocs == NULL) |
| 2065 |
return TRUE; |
| 2066 |
|
| 2067 |
/* In the shared -Bsymbolic case, discard space allocated for |
| 2068 |
dynamic pc-relative relocs against symbols which turn out to be |
| 2069 |
defined in regular objects. For the normal shared case, discard |
| 2070 |
space for pc-relative relocs that have become local due to symbol |
| 2071 |
visibility changes. */ |
| 2072 |
|
| 2073 |
if (info->shared) |
| 2074 |
{ |
| 2075 |
if (h->def_regular |
| 2076 |
&& (h->forced_local |
| 2077 |
|| info->symbolic)) |
| 2078 |
{ |
| 2079 |
struct elf_m32r_dyn_relocs **pp; |
| 2080 |
|
| 2081 |
for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) |
| 2082 |
{ |
| 2083 |
p->count -= p->pc_count; |
| 2084 |
p->pc_count = 0; |
| 2085 |
if (p->count == 0) |
| 2086 |
*pp = p->next; |
| 2087 |
else |
| 2088 |
pp = &p->next; |
| 2089 |
} |
| 2090 |
} |
| 2091 |
|
| 2092 |
/* Also discard relocs on undefined weak syms with non-default |
| 2093 |
visibility. */ |
| 2094 |
if (eh->dyn_relocs != NULL |
| 2095 |
&& h->root.type == bfd_link_hash_undefweak) |
| 2096 |
{ |
| 2097 |
if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
| 2098 |
eh->dyn_relocs = NULL; |
| 2099 |
|
| 2100 |
/* Make sure undefined weak symbols are output as a dynamic |
| 2101 |
symbol in PIEs. */ |
| 2102 |
else if (h->dynindx == -1 |
| 2103 |
&& !h->forced_local) |
| 2104 |
{ |
| 2105 |
if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 2106 |
return FALSE; |
| 2107 |
} |
| 2108 |
} |
| 2109 |
} |
| 2110 |
else |
| 2111 |
{ |
| 2112 |
/* For the non-shared case, discard space for relocs against |
| 2113 |
symbols which turn out to need copy relocs or are not |
| 2114 |
dynamic. */ |
| 2115 |
|
| 2116 |
if (!h->non_got_ref |
| 2117 |
&& ((h->def_dynamic |
| 2118 |
&& !h->def_regular) |
| 2119 |
|| (htab->root.dynamic_sections_created |
| 2120 |
&& (h->root.type == bfd_link_hash_undefweak |
| 2121 |
|| h->root.type == bfd_link_hash_undefined)))) |
| 2122 |
{ |
| 2123 |
/* Make sure this symbol is output as a dynamic symbol. |
| 2124 |
Undefined weak syms won't yet be marked as dynamic. */ |
| 2125 |
if (h->dynindx == -1 |
| 2126 |
&& !h->forced_local) |
| 2127 |
{ |
| 2128 |
if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 2129 |
return FALSE; |
| 2130 |
} |
| 2131 |
|
| 2132 |
/* If that succeeded, we know we'll be keeping all the |
| 2133 |
relocs. */ |
| 2134 |
if (h->dynindx != -1) |
| 2135 |
goto keep; |
| 2136 |
} |
| 2137 |
|
| 2138 |
eh->dyn_relocs = NULL; |
| 2139 |
|
| 2140 |
keep: ; |
| 2141 |
} |
| 2142 |
|
| 2143 |
/* Finally, allocate space. */ |
| 2144 |
for (p = eh->dyn_relocs; p != NULL; p = p->next) |
| 2145 |
{ |
| 2146 |
asection *sreloc = elf_section_data (p->sec)->sreloc; |
| 2147 |
sreloc->size += p->count * sizeof (Elf32_External_Rela); |
| 2148 |
} |
| 2149 |
|
| 2150 |
return TRUE; |
| 2151 |
} |
| 2152 |
|
| 2153 |
/* Find any dynamic relocs that apply to read-only sections. */ |
| 2154 |
|
| 2155 |
static bfd_boolean |
| 2156 |
readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
| 2157 |
{ |
| 2158 |
struct elf_m32r_link_hash_entry *eh; |
| 2159 |
struct elf_m32r_dyn_relocs *p; |
| 2160 |
|
| 2161 |
if (h->root.type == bfd_link_hash_warning) |
| 2162 |
h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 2163 |
|
| 2164 |
eh = (struct elf_m32r_link_hash_entry *) h; |
| 2165 |
for (p = eh->dyn_relocs; p != NULL; p = p->next) |
| 2166 |
{ |
| 2167 |
asection *s = p->sec->output_section; |
| 2168 |
|
| 2169 |
if (s != NULL && (s->flags & SEC_READONLY) != 0) |
| 2170 |
{ |
| 2171 |
struct bfd_link_info *info = (struct bfd_link_info *) inf; |
| 2172 |
|
| 2173 |
info->flags |= DF_TEXTREL; |
| 2174 |
|
| 2175 |
/* Not an error, just cut short the traversal. */ |
| 2176 |
return FALSE; |
| 2177 |
} |
| 2178 |
} |
| 2179 |
return TRUE; |
| 2180 |
} |
| 2181 |
|
| 2182 |
/* Set the sizes of the dynamic sections. */ |
| 2183 |
|
| 2184 |
static bfd_boolean |
| 2185 |
m32r_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
| 2186 |
struct bfd_link_info *info) |
| 2187 |
{ |
| 2188 |
struct elf_m32r_link_hash_table *htab; |
| 2189 |
bfd *dynobj; |
| 2190 |
asection *s; |
| 2191 |
bfd_boolean relocs; |
| 2192 |
bfd *ibfd; |
| 2193 |
|
| 2194 |
#ifdef DEBUG_PIC |
| 2195 |
printf ("m32r_elf_size_dynamic_sections()\n"); |
| 2196 |
#endif |
| 2197 |
|
| 2198 |
htab = m32r_elf_hash_table (info); |
| 2199 |
dynobj = htab->root.dynobj; |
| 2200 |
BFD_ASSERT (dynobj != NULL); |
| 2201 |
|
| 2202 |
if (htab->root.dynamic_sections_created) |
| 2203 |
{ |
| 2204 |
/* Set the contents of the .interp section to the interpreter. */ |
| 2205 |
if (info->executable) |
| 2206 |
{ |
| 2207 |
s = bfd_get_section_by_name (dynobj, ".interp"); |
| 2208 |
BFD_ASSERT (s != NULL); |
| 2209 |
s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
| 2210 |
s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
| 2211 |
} |
| 2212 |
} |
| 2213 |
|
| 2214 |
/* Set up .got offsets for local syms, and space for local dynamic |
| 2215 |
relocs. */ |
| 2216 |
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
| 2217 |
{ |
| 2218 |
bfd_signed_vma *local_got; |
| 2219 |
bfd_signed_vma *end_local_got; |
| 2220 |
bfd_size_type locsymcount; |
| 2221 |
Elf_Internal_Shdr *symtab_hdr; |
| 2222 |
asection *srel; |
| 2223 |
|
| 2224 |
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) |
| 2225 |
continue; |
| 2226 |
|
| 2227 |
for (s = ibfd->sections; s != NULL; s = s->next) |
| 2228 |
{ |
| 2229 |
struct elf_m32r_dyn_relocs *p; |
| 2230 |
|
| 2231 |
for (p = ((struct elf_m32r_dyn_relocs *) |
| 2232 |
elf_section_data (s)->local_dynrel); |
| 2233 |
p != NULL; |
| 2234 |
p = p->next) |
| 2235 |
{ |
| 2236 |
if (! bfd_is_abs_section (p->sec) |
| 2237 |
&& bfd_is_abs_section (p->sec->output_section)) |
| 2238 |
{ |
| 2239 |
/* Input section has been discarded, either because |
| 2240 |
it is a copy of a linkonce section or due to |
| 2241 |
linker script /DISCARD/, so we'll be discarding |
| 2242 |
the relocs too. */ |
| 2243 |
} |
| 2244 |
else if (p->count != 0) |
| 2245 |
{ |
| 2246 |
srel = elf_section_data (p->sec)->sreloc; |
| 2247 |
srel->size += p->count * sizeof (Elf32_External_Rela); |
| 2248 |
if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
| 2249 |
info->flags |= DF_TEXTREL; |
| 2250 |
} |
| 2251 |
} |
| 2252 |
} |
| 2253 |
|
| 2254 |
local_got = elf_local_got_refcounts (ibfd); |
| 2255 |
if (!local_got) |
| 2256 |
continue; |
| 2257 |
|
| 2258 |
symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
| 2259 |
locsymcount = symtab_hdr->sh_info; |
| 2260 |
end_local_got = local_got + locsymcount; |
| 2261 |
s = htab->sgot; |
| 2262 |
srel = htab->srelgot; |
| 2263 |
for (; local_got < end_local_got; ++local_got) |
| 2264 |
{ |
| 2265 |
if (*local_got > 0) |
| 2266 |
{ |
| 2267 |
*local_got = s->size; |
| 2268 |
s->size += 4; |
| 2269 |
if (info->shared) |
| 2270 |
srel->size += sizeof (Elf32_External_Rela); |
| 2271 |
} |
| 2272 |
else |
| 2273 |
*local_got = (bfd_vma) -1; |
| 2274 |
} |
| 2275 |
} |
| 2276 |
|
| 2277 |
/* Allocate global sym .plt and .got entries, and space for global |
| 2278 |
sym dynamic relocs. */ |
| 2279 |
elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info); |
| 2280 |
|
| 2281 |
/* We now have determined the sizes of the various dynamic sections. |
| 2282 |
Allocate memory for them. */ |
| 2283 |
relocs = FALSE; |
| 2284 |
for (s = dynobj->sections; s != NULL; s = s->next) |
| 2285 |
{ |
| 2286 |
if ((s->flags & SEC_LINKER_CREATED) == 0) |
| 2287 |
continue; |
| 2288 |
|
| 2289 |
if (s == htab->splt |
| 2290 |
|| s == htab->sgot |
| 2291 |
|| s == htab->sgotplt |
| 2292 |
|| s == htab->sdynbss) |
| 2293 |
{ |
| 2294 |
/* Strip this section if we don't need it; see the |
| 2295 |
comment below. */ |
| 2296 |
} |
| 2297 |
else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
| 2298 |
{ |
| 2299 |
if (s->size != 0 && s != htab->srelplt) |
| 2300 |
relocs = TRUE; |
| 2301 |
|
| 2302 |
/* We use the reloc_count field as a counter if we need |
| 2303 |
to copy relocs into the output file. */ |
| 2304 |
s->reloc_count = 0; |
| 2305 |
} |
| 2306 |
else |
| 2307 |
/* It's not one of our sections, so don't allocate space. */ |
| 2308 |
continue; |
| 2309 |
|
| 2310 |
if (s->size == 0) |
| 2311 |
{ |
| 2312 |
/* If we don't need this section, strip it from the |
| 2313 |
output file. This is mostly to handle .rela.bss and |
| 2314 |
.rela.plt. We must create both sections in |
| 2315 |
create_dynamic_sections, because they must be created |
| 2316 |
before the linker maps input sections to output |
| 2317 |
sections. The linker does that before |
| 2318 |
adjust_dynamic_symbol is called, and it is that |
| 2319 |
function which decides whether anything needs to go |
| 2320 |
into these sections. */ |
| 2321 |
s->flags |= SEC_EXCLUDE; |
| 2322 |
continue; |
| 2323 |
} |
| 2324 |
|
| 2325 |
if ((s->flags & SEC_HAS_CONTENTS) == 0) |
| 2326 |
continue; |
| 2327 |
|
| 2328 |
/* Allocate memory for the section contents. We use bfd_zalloc |
| 2329 |
here in case unused entries are not reclaimed before the |
| 2330 |
section's contents are written out. This should not happen, |
| 2331 |
but this way if it does, we get a R_M32R_NONE reloc instead |
| 2332 |
of garbage. */ |
| 2333 |
s->contents = bfd_zalloc (dynobj, s->size); |
| 2334 |
if (s->contents == NULL) |
| 2335 |
return FALSE; |
| 2336 |
} |
| 2337 |
|
| 2338 |
if (htab->root.dynamic_sections_created) |
| 2339 |
{ |
| 2340 |
/* Add some entries to the .dynamic section. We fill in the |
| 2341 |
values later, in m32r_elf_finish_dynamic_sections, but we |
| 2342 |
must add the entries now so that we get the correct size for |
| 2343 |
the .dynamic section. The DT_DEBUG entry is filled in by the |
| 2344 |
dynamic linker and used by the debugger. */ |
| 2345 |
#define add_dynamic_entry(TAG, VAL) \ |
| 2346 |
_bfd_elf_add_dynamic_entry (info, TAG, VAL) |
| 2347 |
|
| 2348 |
if (info->executable) |
| 2349 |
{ |
| 2350 |
if (! add_dynamic_entry (DT_DEBUG, 0)) |
| 2351 |
return FALSE; |
| 2352 |
} |
| 2353 |
|
| 2354 |
if (htab->splt->size != 0) |
| 2355 |
{ |
| 2356 |
if (! add_dynamic_entry (DT_PLTGOT, 0) |
| 2357 |
|| ! add_dynamic_entry (DT_PLTRELSZ, 0) |
| 2358 |
|| ! add_dynamic_entry (DT_PLTREL, DT_RELA) |
| 2359 |
|| ! add_dynamic_entry (DT_JMPREL, 0)) |
| 2360 |
return FALSE; |
| 2361 |
} |
| 2362 |
|
| 2363 |
if (relocs) |
| 2364 |
{ |
| 2365 |
if (! add_dynamic_entry (DT_RELA, 0) |
| 2366 |
|| ! add_dynamic_entry (DT_RELASZ, 0) |
| 2367 |
|| ! add_dynamic_entry (DT_RELAENT, |
| 2368 |
sizeof (Elf32_External_Rela))) |
| 2369 |
return FALSE; |
| 2370 |
|
| 2371 |
/* If any dynamic relocs apply to a read-only section, |
| 2372 |
then we need a DT_TEXTREL entry. */ |
| 2373 |
if ((info->flags & DF_TEXTREL) == 0) |
| 2374 |
elf_link_hash_traverse (&htab->root, readonly_dynrelocs, |
| 2375 |
info); |
| 2376 |
|
| 2377 |
if ((info->flags & DF_TEXTREL) != 0) |
| 2378 |
{ |
| 2379 |
if (! add_dynamic_entry (DT_TEXTREL, 0)) |
| 2380 |
return FALSE; |
| 2381 |
} |
| 2382 |
} |
| 2383 |
} |
| 2384 |
#undef add_dynamic_entry |
| 2385 |
|
| 2386 |
return TRUE; |
| 2387 |
} |
| 2388 |
|
| 2389 |
/* Relocate an M32R/D ELF section. |
| 2390 |
There is some attempt to make this function usable for many architectures, |
| 2391 |
both for RELA and REL type relocs, if only to serve as a learning tool. |
| 2392 |
|
| 2393 |
The RELOCATE_SECTION function is called by the new ELF backend linker |
| 2394 |
to handle the relocations for a section. |
| 2395 |
|
| 2396 |
The relocs are always passed as Rela structures; if the section |
| 2397 |
actually uses Rel structures, the r_addend field will always be |
| 2398 |
zero. |
| 2399 |
|
| 2400 |
This function is responsible for adjust the section contents as |
| 2401 |
necessary, and (if using Rela relocs and generating a |
| 2402 |
relocatable output file) adjusting the reloc addend as |
| 2403 |
necessary. |
| 2404 |
|
| 2405 |
This function does not have to worry about setting the reloc |
| 2406 |
address or the reloc symbol index. |
| 2407 |
|
| 2408 |
LOCAL_SYMS is a pointer to the swapped in local symbols. |
| 2409 |
|
| 2410 |
LOCAL_SECTIONS is an array giving the section in the input file |
| 2411 |
corresponding to the st_shndx field of each local symbol. |
| 2412 |
|
| 2413 |
The global hash table entry for the global symbols can be found |
| 2414 |
via elf_sym_hashes (input_bfd). |
| 2415 |
|
| 2416 |
When generating relocatable output, this function must handle |
| 2417 |
STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
| 2418 |
going to be the section symbol corresponding to the output |
| 2419 |
section, which means that the addend must be adjusted |
| 2420 |
accordingly. */ |
| 2421 |
|
| 2422 |
static bfd_boolean |
| 2423 |
m32r_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED, |
| 2424 |
struct bfd_link_info *info, |
| 2425 |
bfd *input_bfd, |
| 2426 |
asection *input_section, |
| 2427 |
bfd_byte *contents, |
| 2428 |
Elf_Internal_Rela *relocs, |
| 2429 |
Elf_Internal_Sym *local_syms, |
| 2430 |
asection **local_sections) |
| 2431 |
{ |
| 2432 |
Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| 2433 |
struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); |
| 2434 |
Elf_Internal_Rela *rel, *relend; |
| 2435 |
/* Assume success. */ |
| 2436 |
bfd_boolean ret = TRUE; |
| 2437 |
|
| 2438 |
struct elf_m32r_link_hash_table *htab = m32r_elf_hash_table (info); |
| 2439 |
bfd *dynobj; |
| 2440 |
bfd_vma *local_got_offsets; |
| 2441 |
asection *sgot, *splt, *sreloc; |
| 2442 |
bfd_vma high_address = bfd_get_section_limit (input_bfd, input_section); |
| 2443 |
|
| 2444 |
dynobj = htab->root.dynobj; |
| 2445 |
local_got_offsets = elf_local_got_offsets (input_bfd); |
| 2446 |
|
| 2447 |
sgot = htab->sgot; |
| 2448 |
splt = htab->splt; |
| 2449 |
sreloc = NULL; |
| 2450 |
|
| 2451 |
rel = relocs; |
| 2452 |
relend = relocs + input_section->reloc_count; |
| 2453 |
for (; rel < relend; rel++) |
| 2454 |
{ |
| 2455 |
int r_type; |
| 2456 |
reloc_howto_type *howto; |
| 2457 |
unsigned long r_symndx; |
| 2458 |
struct elf_link_hash_entry *h; |
| 2459 |
/* We can't modify r_addend here as elf_link_input_bfd has an assert to |
| 2460 |
ensure it's zero (we use REL relocs, not RELA). Therefore this |
| 2461 |
should be assigning zero to `addend', but for clarity we use |
| 2462 |
`r_addend'. */ |
| 2463 |
bfd_vma addend = rel->r_addend; |
| 2464 |
bfd_vma offset = rel->r_offset; |
| 2465 |
bfd_vma relocation; |
| 2466 |
Elf_Internal_Sym *sym; |
| 2467 |
asection *sec; |
| 2468 |
const char *sym_name; |
| 2469 |
bfd_reloc_status_type r; |
| 2470 |
const char *errmsg = NULL; |
| 2471 |
bfd_boolean use_rel = FALSE; |
| 2472 |
|
| 2473 |
h = NULL; |
| 2474 |
r_type = ELF32_R_TYPE (rel->r_info); |
| 2475 |
if (r_type < 0 || r_type >= (int) R_M32R_max) |
| 2476 |
{ |
| 2477 |
(*_bfd_error_handler) (_("%B: unknown relocation type %d"), |
| 2478 |
input_bfd, |
| 2479 |
(int) r_type); |
| 2480 |
bfd_set_error (bfd_error_bad_value); |
| 2481 |
ret = FALSE; |
| 2482 |
continue; |
| 2483 |
} |
| 2484 |
|
| 2485 |
if ( r_type == R_M32R_GNU_VTENTRY |
| 2486 |
|| r_type == R_M32R_GNU_VTINHERIT |
| 2487 |
|| r_type == R_M32R_NONE |
| 2488 |
|| r_type == R_M32R_RELA_GNU_VTENTRY |
| 2489 |
|| r_type == R_M32R_RELA_GNU_VTINHERIT) |
| 2490 |
continue; |
| 2491 |
|
| 2492 |
if (r_type <= R_M32R_GNU_VTENTRY) |
| 2493 |
use_rel = TRUE; |
| 2494 |
|
| 2495 |
howto = m32r_elf_howto_table + r_type; |
| 2496 |
r_symndx = ELF32_R_SYM (rel->r_info); |
| 2497 |
|
| 2498 |
sym = NULL; |
| 2499 |
sec = NULL; |
| 2500 |
h = NULL; |
| 2501 |
|
| 2502 |
if (r_symndx < symtab_hdr->sh_info) |
| 2503 |
{ |
| 2504 |
/* Local symbol. */ |
| 2505 |
sym = local_syms + r_symndx; |
| 2506 |
sec = local_sections[r_symndx]; |
| 2507 |
sym_name = "<local symbol>"; |
| 2508 |
|
| 2509 |
if (!use_rel) |
| 2510 |
{ |
| 2511 |
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
| 2512 |
addend = rel->r_addend; |
| 2513 |
} |
| 2514 |
else |
| 2515 |
{ |
| 2516 |
relocation = (sec->output_section->vma |
| 2517 |
+ sec->output_offset |
| 2518 |
+ sym->st_value); |
| 2519 |
} |
| 2520 |
} |
| 2521 |
else |
| 2522 |
{ |
| 2523 |
/* External symbol. */ |
| 2524 |
relocation = 0; |
| 2525 |
|
| 2526 |
h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 2527 |
while (h->root.type == bfd_link_hash_indirect |
| 2528 |
|| h->root.type == bfd_link_hash_warning) |
| 2529 |
h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 2530 |
sym_name = h->root.root.string; |
| 2531 |
|
| 2532 |
if (h->root.type == bfd_link_hash_defined |
| 2533 |
|| h->root.type == bfd_link_hash_defweak) |
| 2534 |
{ |
| 2535 |
bfd_boolean dyn; |
| 2536 |
sec = h->root.u.def.section; |
| 2537 |
|
| 2538 |
dyn = htab->root.dynamic_sections_created; |
| 2539 |
sec = h->root.u.def.section; |
| 2540 |
if (r_type == R_M32R_GOTPC24 |
| 2541 |
|| (r_type == R_M32R_GOTPC_HI_ULO |
| 2542 |
|| r_type == R_M32R_GOTPC_HI_SLO |
| 2543 |
|| r_type == R_M32R_GOTPC_LO) |
| 2544 |
|| (r_type == R_M32R_26_PLTREL |
| 2545 |
&& h->plt.offset != (bfd_vma) -1) |
| 2546 |
|| ((r_type == R_M32R_GOT24 |
| 2547 |
|| r_type == R_M32R_GOT16_HI_ULO |
| 2548 |
|| r_type == R_M32R_GOT16_HI_SLO |
| 2549 |
|| r_type == R_M32R_GOT16_LO) |
| 2550 |
&& WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
| 2551 |
info->shared, h) |
| 2552 |
&& (! info->shared |
| 2553 |
|| (! info->symbolic && h->dynindx != -1) |
| 2554 |
|| !h->def_regular)) |
| 2555 |
|| (info->shared |
| 2556 |
&& ((! info->symbolic && h->dynindx != -1) |
| 2557 |
|| !h->def_regular) |
| 2558 |
&& (((r_type == R_M32R_16_RELA |
| 2559 |
|| r_type == R_M32R_32_RELA |
| 2560 |
|| r_type == R_M32R_24_RELA |
| 2561 |
|| r_type == R_M32R_HI16_ULO_RELA |
| 2562 |
|| r_type == R_M32R_HI16_SLO_RELA |
| 2563 |
|| r_type == R_M32R_LO16_RELA) |
| 2564 |
&& !h->forced_local) |
| 2565 |
|| r_type == R_M32R_REL32 |
| 2566 |
|| r_type == R_M32R_10_PCREL_RELA |
| 2567 |
|| r_type == R_M32R_18_PCREL_RELA |
| 2568 |
|| r_type == R_M32R_26_PCREL_RELA) |
| 2569 |
&& ((input_section->flags & SEC_ALLOC) != 0 |
| 2570 |
/* DWARF will emit R_M32R_16(24,32) relocations |
| 2571 |
in its sections against symbols defined |
| 2572 |
externally in shared libraries. We can't do |
| 2573 |
anything with them here. */ |
| 2574 |
|| ((input_section->flags & SEC_DEBUGGING) != 0 |
| 2575 |
&& h->def_dynamic)))) |
| 2576 |
{ |
| 2577 |
/* In these cases, we don't need the relocation |
| 2578 |
value. We check specially because in some |
| 2579 |
obscure cases sec->output_section will be NULL. */ |
| 2580 |
} |
| 2581 |
else if (sec->output_section != NULL) |
| 2582 |
relocation = (h->root.u.def.value |
| 2583 |
+ sec->output_section->vma |
| 2584 |
+ sec->output_offset); |
| 2585 |
else if (!info->relocatable) |
| 2586 |
{ |
| 2587 |
(*_bfd_error_handler) |
| 2588 |
(_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
| 2589 |
input_bfd, |
| 2590 |
input_section, |
| 2591 |
(long) rel->r_offset, |
| 2592 |
howto->name, |
| 2593 |
h->root.root.string); |
| 2594 |
} |
| 2595 |
} |
| 2596 |
else if (h->root.type == bfd_link_hash_undefweak) |
| 2597 |
; |
| 2598 |
else if (info->unresolved_syms_in_objects == RM_IGNORE |
| 2599 |
&& ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) |
| 2600 |
; |
| 2601 |
else if (!info->relocatable) |
| 2602 |
{ |
| 2603 |
if (! ((*info->callbacks->undefined_symbol) |
| 2604 |
(info, h->root.root.string, input_bfd, |
| 2605 |
input_section, offset, |
| 2606 |
(info->unresolved_syms_in_objects == RM_GENERATE_ERROR |
| 2607 |
|| ELF_ST_VISIBILITY (h->other))))) |
| 2608 |
return FALSE; |
| 2609 |
} |
| 2610 |
} |
| 2611 |
|
| 2612 |
if (sec != NULL && elf_discarded_section (sec)) |
| 2613 |
{ |
| 2614 |
/* For relocs against symbols from removed linkonce sections, |
| 2615 |
or sections discarded by a linker script, we just want the |
| 2616 |
section contents zeroed. Avoid any special processing. */ |
| 2617 |
_bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); |
| 2618 |
rel->r_info = 0; |
| 2619 |
rel->r_addend = 0; |
| 2620 |
continue; |
| 2621 |
} |
| 2622 |
|
| 2623 |
if (info->relocatable && !use_rel) |
| 2624 |
{ |
| 2625 |
/* This is a relocatable link. We don't have to change |
| 2626 |
anything, unless the reloc is against a section symbol, |
| 2627 |
in which case we have to adjust according to where the |
| 2628 |
section symbol winds up in the output section. */ |
| 2629 |
if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) |
| 2630 |
rel->r_addend += sec->output_offset; |
| 2631 |
continue; |
| 2632 |
} |
| 2633 |
|
| 2634 |
if (info->relocatable && use_rel) |
| 2635 |
{ |
| 2636 |
/* This is a relocatable link. We don't have to change |
| 2637 |
anything, unless the reloc is against a section symbol, |
| 2638 |
in which case we have to adjust according to where the |
| 2639 |
section symbol winds up in the output section. */ |
| 2640 |
if (sym == NULL || ELF_ST_TYPE (sym->st_info) != STT_SECTION) |
| 2641 |
continue; |
| 2642 |
|
| 2643 |
addend += sec->output_offset; |
| 2644 |
|
| 2645 |
/* If partial_inplace, we need to store any additional addend |
| 2646 |
back in the section. */ |
| 2647 |
if (! howto->partial_inplace) |
| 2648 |
continue; |
| 2649 |
/* ??? Here is a nice place to call a special_function |
| 2650 |
like handler. */ |
| 2651 |
if (r_type != R_M32R_HI16_SLO && r_type != R_M32R_HI16_ULO) |
| 2652 |
r = _bfd_relocate_contents (howto, input_bfd, |
| 2653 |
addend, contents + offset); |
| 2654 |
else |
| 2655 |
{ |
| 2656 |
Elf_Internal_Rela *lorel; |
| 2657 |
|
| 2658 |
/* We allow an arbitrary number of HI16 relocs before the |
| 2659 |
LO16 reloc. This permits gcc to emit the HI and LO relocs |
| 2660 |
itself. */ |
| 2661 |
for (lorel = rel + 1; |
| 2662 |
(lorel < relend |
| 2663 |
&& (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO |
| 2664 |
|| ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO)); |
| 2665 |
lorel++) |
| 2666 |
continue; |
| 2667 |
if (lorel < relend |
| 2668 |
&& ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16) |
| 2669 |
{ |
| 2670 |
m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel, |
| 2671 |
contents, addend); |
| 2672 |
r = bfd_reloc_ok; |
| 2673 |
} |
| 2674 |
else |
| 2675 |
r = _bfd_relocate_contents (howto, input_bfd, |
| 2676 |
addend, contents + offset); |
| 2677 |
} |
| 2678 |
} |
| 2679 |
else |
| 2680 |
{ |
| 2681 |
/* Sanity check the address. */ |
| 2682 |
if (offset > high_address) |
| 2683 |
{ |
| 2684 |
r = bfd_reloc_outofrange; |
| 2685 |
goto check_reloc; |
| 2686 |
} |
| 2687 |
|
| 2688 |
switch ((int) r_type) |
| 2689 |
{ |
| 2690 |
case R_M32R_GOTOFF: |
| 2691 |
/* Relocation is relative to the start of the global offset |
| 2692 |
table (for ld24 rx, #uimm24). eg access at label+addend |
| 2693 |
|
| 2694 |
ld24 rx. #label@GOTOFF + addend |
| 2695 |
sub rx, r12. */ |
| 2696 |
|
| 2697 |
BFD_ASSERT (sgot != NULL); |
| 2698 |
|
| 2699 |
relocation = -(relocation - sgot->output_section->vma); |
| 2700 |
rel->r_addend = -rel->r_addend; |
| 2701 |
break; |
| 2702 |
|
| 2703 |
case R_M32R_GOTOFF_HI_ULO: |
| 2704 |
case R_M32R_GOTOFF_HI_SLO: |
| 2705 |
case R_M32R_GOTOFF_LO: |
| 2706 |
BFD_ASSERT (sgot != NULL); |
| 2707 |
|
| 2708 |
relocation -= sgot->output_section->vma; |
| 2709 |
|
| 2710 |
if ((r_type == R_M32R_GOTOFF_HI_SLO) |
| 2711 |
&& ((relocation + rel->r_addend) & 0x8000)) |
| 2712 |
rel->r_addend += 0x10000; |
| 2713 |
break; |
| 2714 |
|
| 2715 |
case R_M32R_GOTPC24: |
| 2716 |
/* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation |
| 2717 |
ld24 rx,#_GLOBAL_OFFSET_TABLE_ |
| 2718 |
*/ |
| 2719 |
relocation = sgot->output_section->vma; |
| 2720 |
break; |
| 2721 |
|
| 2722 |
case R_M32R_GOTPC_HI_ULO: |
| 2723 |
case R_M32R_GOTPC_HI_SLO: |
| 2724 |
case R_M32R_GOTPC_LO: |
| 2725 |
{ |
| 2726 |
/* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation |
| 2727 |
bl .+4 |
| 2728 |
seth rx,#high(_GLOBAL_OFFSET_TABLE_) |
| 2729 |
or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4) |
| 2730 |
or |
| 2731 |
bl .+4 |
| 2732 |
seth rx,#shigh(_GLOBAL_OFFSET_TABLE_) |
| 2733 |
add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4) |
| 2734 |
*/ |
| 2735 |
relocation = sgot->output_section->vma; |
| 2736 |
relocation -= (input_section->output_section->vma |
| 2737 |
+ input_section->output_offset |
| 2738 |
+ rel->r_offset); |
| 2739 |
if ((r_type == R_M32R_GOTPC_HI_SLO) |
| 2740 |
&& ((relocation + rel->r_addend) & 0x8000)) |
| 2741 |
rel->r_addend += 0x10000; |
| 2742 |
|
| 2743 |
break; |
| 2744 |
} |
| 2745 |
case R_M32R_GOT16_HI_ULO: |
| 2746 |
case R_M32R_GOT16_HI_SLO: |
| 2747 |
case R_M32R_GOT16_LO: |
| 2748 |
/* Fall through. */ |
| 2749 |
case R_M32R_GOT24: |
| 2750 |
/* Relocation is to the entry for this symbol in the global |
| 2751 |
offset table. */ |
| 2752 |
BFD_ASSERT (sgot != NULL); |
| 2753 |
|
| 2754 |
if (h != NULL) |
| 2755 |
{ |
| 2756 |
bfd_boolean dyn; |
| 2757 |
bfd_vma off; |
| 2758 |
|
| 2759 |
off = h->got.offset; |
| 2760 |
BFD_ASSERT (off != (bfd_vma) -1); |
| 2761 |
|
| 2762 |
dyn = htab->root.dynamic_sections_created; |
| 2763 |
if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
| 2764 |
|| (info->shared |
| 2765 |
&& (info->symbolic |
| 2766 |
|| h->dynindx == -1 |
| 2767 |
|| h->forced_local) |
| 2768 |
&& h->def_regular)) |
| 2769 |
{ |
| 2770 |
/* This is actually a static link, or it is a |
| 2771 |
-Bsymbolic link and the symbol is defined |
| 2772 |
locally, or the symbol was forced to be local |
| 2773 |
because of a version file. We must initialize |
| 2774 |
this entry in the global offset table. Since the |
| 2775 |
offset must always be a multiple of 4, we use the |
| 2776 |
least significant bit to record whether we have |
| 2777 |
initialized it already. |
| 2778 |
|
| 2779 |
When doing a dynamic link, we create a .rela.got |
| 2780 |
relocation entry to initialize the value. This |
| 2781 |
is done in the finish_dynamic_symbol routine. */ |
| 2782 |
if ((off & 1) != 0) |
| 2783 |
off &= ~1; |
| 2784 |
else |
| 2785 |
{ |
| 2786 |
bfd_put_32 (output_bfd, relocation, |
| 2787 |
sgot->contents + off); |
| 2788 |
h->got.offset |= 1; |
| 2789 |
} |
| 2790 |
} |
| 2791 |
|
| 2792 |
relocation = sgot->output_offset + off; |
| 2793 |
} |
| 2794 |
else |
| 2795 |
{ |
| 2796 |
bfd_vma off; |
| 2797 |
bfd_byte *loc; |
| 2798 |
|
| 2799 |
BFD_ASSERT (local_got_offsets != NULL |
| 2800 |
&& local_got_offsets[r_symndx] != (bfd_vma) -1); |
| 2801 |
|
| 2802 |
off = local_got_offsets[r_symndx]; |
| 2803 |
|
| 2804 |
/* The offset must always be a multiple of 4. We use |
| 2805 |
the least significant bit to record whether we have |
| 2806 |
already processed this entry. */ |
| 2807 |
if ((off & 1) != 0) |
| 2808 |
off &= ~1; |
| 2809 |
else |
| 2810 |
{ |
| 2811 |
bfd_put_32 (output_bfd, relocation, sgot->contents + off); |
| 2812 |
|
| 2813 |
if (info->shared) |
| 2814 |
{ |
| 2815 |
asection *srelgot; |
| 2816 |
Elf_Internal_Rela outrel; |
| 2817 |
|
| 2818 |
/* We need to generate a R_M32R_RELATIVE reloc |
| 2819 |
for the dynamic linker. */ |
| 2820 |
srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); |
| 2821 |
BFD_ASSERT (srelgot != NULL); |
| 2822 |
|
| 2823 |
outrel.r_offset = (sgot->output_section->vma |
| 2824 |
+ sgot->output_offset |
| 2825 |
+ off); |
| 2826 |
outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); |
| 2827 |
outrel.r_addend = relocation; |
| 2828 |
loc = srelgot->contents; |
| 2829 |
loc += srelgot->reloc_count * sizeof (Elf32_External_Rela); |
| 2830 |
bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc); |
| 2831 |
++srelgot->reloc_count; |
| 2832 |
} |
| 2833 |
|
| 2834 |
local_got_offsets[r_symndx] |= 1; |
| 2835 |
} |
| 2836 |
|
| 2837 |
relocation = sgot->output_offset + off; |
| 2838 |
} |
| 2839 |
if ((r_type == R_M32R_GOT16_HI_SLO) |
| 2840 |
&& ((relocation + rel->r_addend) & 0x8000)) |
| 2841 |
rel->r_addend += 0x10000; |
| 2842 |
|
| 2843 |
break; |
| 2844 |
|
| 2845 |
case R_M32R_26_PLTREL: |
| 2846 |
/* Relocation is to the entry for this symbol in the |
| 2847 |
procedure linkage table. */ |
| 2848 |
|
| 2849 |
/* The native assembler will generate a 26_PLTREL reloc |
| 2850 |
for a local symbol if you assemble a call from one |
| 2851 |
section to another when using -K pic. */ |
| 2852 |
if (h == NULL) |
| 2853 |
break; |
| 2854 |
|
| 2855 |
if (h->forced_local) |
| 2856 |
break; |
| 2857 |
|
| 2858 |
if (h->plt.offset == (bfd_vma) -1) |
| 2859 |
/* We didn't make a PLT entry for this symbol. This |
| 2860 |
happens when statically linking PIC code, or when |
| 2861 |
using -Bsymbolic. */ |
| 2862 |
break; |
| 2863 |
|
| 2864 |
relocation = (splt->output_section->vma |
| 2865 |
+ splt->output_offset |
| 2866 |
+ h->plt.offset); |
| 2867 |
break; |
| 2868 |
|
| 2869 |
case R_M32R_HI16_SLO_RELA: |
| 2870 |
if ((relocation + rel->r_addend) & 0x8000) |
| 2871 |
rel->r_addend += 0x10000; |
| 2872 |
/* Fall through. */ |
| 2873 |
|
| 2874 |
case R_M32R_16_RELA: |
| 2875 |
case R_M32R_24_RELA: |
| 2876 |
case R_M32R_32_RELA: |
| 2877 |
case R_M32R_REL32: |
| 2878 |
case R_M32R_10_PCREL_RELA: |
| 2879 |
case R_M32R_18_PCREL_RELA: |
| 2880 |
case R_M32R_26_PCREL_RELA: |
| 2881 |
case R_M32R_HI16_ULO_RELA: |
| 2882 |
case R_M32R_LO16_RELA: |
| 2883 |
if (info->shared |
| 2884 |
&& r_symndx != 0 |
| 2885 |
&& (input_section->flags & SEC_ALLOC) != 0 |
| 2886 |
&& (( r_type != R_M32R_10_PCREL_RELA |
| 2887 |
&& r_type != R_M32R_18_PCREL_RELA |
| 2888 |
&& r_type != R_M32R_26_PCREL_RELA |
| 2889 |
&& r_type != R_M32R_REL32) |
| 2890 |
|| (h != NULL |
| 2891 |
&& h->dynindx != -1 |
| 2892 |
&& (! info->symbolic |
| 2893 |
|| !h->def_regular)))) |
| 2894 |
{ |
| 2895 |
Elf_Internal_Rela outrel; |
| 2896 |
bfd_boolean skip, relocate; |
| 2897 |
bfd_byte *loc; |
| 2898 |
|
| 2899 |
/* When generating a shared object, these relocations |
| 2900 |
are copied into the output file to be resolved at run |
| 2901 |
time. */ |
| 2902 |
if (sreloc == NULL) |
| 2903 |
{ |
| 2904 |
sreloc = _bfd_elf_get_dynamic_reloc_section |
| 2905 |
(input_bfd, input_section, /*rela?*/ TRUE); |
| 2906 |
if (sreloc == NULL) |
| 2907 |
return FALSE; |
| 2908 |
} |
| 2909 |
|
| 2910 |
skip = FALSE; |
| 2911 |
relocate = FALSE; |
| 2912 |
|
| 2913 |
outrel.r_offset = _bfd_elf_section_offset (output_bfd, |
| 2914 |
info, |
| 2915 |
input_section, |
| 2916 |
rel->r_offset); |
| 2917 |
if (outrel.r_offset == (bfd_vma) -1) |
| 2918 |
skip = TRUE; |
| 2919 |
else if (outrel.r_offset == (bfd_vma) -2) |
| 2920 |
skip = relocate = TRUE; |
| 2921 |
outrel.r_offset += (input_section->output_section->vma |
| 2922 |
+ input_section->output_offset); |
| 2923 |
|
| 2924 |
if (skip) |
| 2925 |
memset (&outrel, 0, sizeof outrel); |
| 2926 |
else if ( r_type == R_M32R_10_PCREL_RELA |
| 2927 |
|| r_type == R_M32R_18_PCREL_RELA |
| 2928 |
|| r_type == R_M32R_26_PCREL_RELA |
| 2929 |
|| r_type == R_M32R_REL32) |
| 2930 |
{ |
| 2931 |
BFD_ASSERT (h != NULL && h->dynindx != -1); |
| 2932 |
outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
| 2933 |
outrel.r_addend = rel->r_addend; |
| 2934 |
} |
| 2935 |
else |
| 2936 |
{ |
| 2937 |
/* h->dynindx may be -1 if this symbol was marked to |
| 2938 |
become local. */ |
| 2939 |
if (h == NULL |
| 2940 |
|| ((info->symbolic || h->dynindx == -1) |
| 2941 |
&& h->def_regular)) |
| 2942 |
{ |
| 2943 |
relocate = TRUE; |
| 2944 |
outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); |
| 2945 |
outrel.r_addend = relocation + rel->r_addend; |
| 2946 |
} |
| 2947 |
else |
| 2948 |
{ |
| 2949 |
BFD_ASSERT (h->dynindx != -1); |
| 2950 |
outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
| 2951 |
outrel.r_addend = relocation + rel->r_addend; |
| 2952 |
} |
| 2953 |
} |
| 2954 |
|
| 2955 |
loc = sreloc->contents; |
| 2956 |
loc += sreloc->reloc_count * sizeof (Elf32_External_Rela); |
| 2957 |
bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc); |
| 2958 |
++sreloc->reloc_count; |
| 2959 |
|
| 2960 |
/* If this reloc is against an external symbol, we do |
| 2961 |
not want to fiddle with the addend. Otherwise, we |
| 2962 |
need to include the symbol value so that it becomes |
| 2963 |
an addend for the dynamic reloc. */ |
| 2964 |
if (! relocate) |
| 2965 |
continue; |
| 2966 |
break; |
| 2967 |
} |
| 2968 |
else if (r_type != R_M32R_10_PCREL_RELA) |
| 2969 |
break; |
| 2970 |
/* Fall through. */ |
| 2971 |
|
| 2972 |
case (int) R_M32R_10_PCREL : |
| 2973 |
r = m32r_elf_do_10_pcrel_reloc (input_bfd, howto, input_section, |
| 2974 |
contents, offset, |
| 2975 |
sec, relocation, addend); |
| 2976 |
goto check_reloc; |
| 2977 |
|
| 2978 |
case (int) R_M32R_HI16_SLO : |
| 2979 |
case (int) R_M32R_HI16_ULO : |
| 2980 |
{ |
| 2981 |
Elf_Internal_Rela *lorel; |
| 2982 |
|
| 2983 |
/* We allow an arbitrary number of HI16 relocs before the |
| 2984 |
LO16 reloc. This permits gcc to emit the HI and LO relocs |
| 2985 |
itself. */ |
| 2986 |
for (lorel = rel + 1; |
| 2987 |
(lorel < relend |
| 2988 |
&& (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO |
| 2989 |
|| ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO)); |
| 2990 |
lorel++) |
| 2991 |
continue; |
| 2992 |
if (lorel < relend |
| 2993 |
&& ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16) |
| 2994 |
{ |
| 2995 |
m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel, |
| 2996 |
contents, relocation + addend); |
| 2997 |
r = bfd_reloc_ok; |
| 2998 |
} |
| 2999 |
else |
| 3000 |
r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 3001 |
contents, offset, |
| 3002 |
relocation, addend); |
| 3003 |
} |
| 3004 |
|
| 3005 |
goto check_reloc; |
| 3006 |
|
| 3007 |
case (int) R_M32R_SDA16_RELA: |
| 3008 |
case (int) R_M32R_SDA16 : |
| 3009 |
{ |
| 3010 |
const char *name; |
| 3011 |
|
| 3012 |
BFD_ASSERT (sec != NULL); |
| 3013 |
name = bfd_get_section_name (abfd, sec); |
| 3014 |
|
| 3015 |
if ( strcmp (name, ".sdata") == 0 |
| 3016 |
|| strcmp (name, ".sbss") == 0 |
| 3017 |
|| strcmp (name, ".scommon") == 0) |
| 3018 |
{ |
| 3019 |
bfd_vma sda_base; |
| 3020 |
bfd *out_bfd = sec->output_section->owner; |
| 3021 |
|
| 3022 |
r = m32r_elf_final_sda_base (out_bfd, info, |
| 3023 |
&errmsg, |
| 3024 |
&sda_base); |
| 3025 |
if (r != bfd_reloc_ok) |
| 3026 |
{ |
| 3027 |
ret = FALSE; |
| 3028 |
goto check_reloc; |
| 3029 |
} |
| 3030 |
|
| 3031 |
/* At this point `relocation' contains the object's |
| 3032 |
address. */ |
| 3033 |
relocation -= sda_base; |
| 3034 |
/* Now it contains the offset from _SDA_BASE_. */ |
| 3035 |
} |
| 3036 |
else |
| 3037 |
{ |
| 3038 |
(*_bfd_error_handler) |
| 3039 |
(_("%B: The target (%s) of an %s relocation is in the wrong section (%A)"), |
| 3040 |
input_bfd, |
| 3041 |
sec, |
| 3042 |
sym_name, |
| 3043 |
m32r_elf_howto_table[(int) r_type].name); |
| 3044 |
/*bfd_set_error (bfd_error_bad_value); ??? why? */ |
| 3045 |
ret = FALSE; |
| 3046 |
continue; |
| 3047 |
} |
| 3048 |
} |
| 3049 |
/* Fall through. */ |
| 3050 |
|
| 3051 |
default : /* OLD_M32R_RELOC */ |
| 3052 |
|
| 3053 |
r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 3054 |
contents, offset, |
| 3055 |
relocation, addend); |
| 3056 |
goto check_reloc; |
| 3057 |
} |
| 3058 |
|
| 3059 |
r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 3060 |
contents, rel->r_offset, |
| 3061 |
relocation, rel->r_addend); |
| 3062 |
|
| 3063 |
} |
| 3064 |
|
| 3065 |
check_reloc: |
| 3066 |
|
| 3067 |
if (r != bfd_reloc_ok) |
| 3068 |
{ |
| 3069 |
/* FIXME: This should be generic enough to go in a utility. */ |
| 3070 |
const char *name; |
| 3071 |
|
| 3072 |
if (h != NULL) |
| 3073 |
name = h->root.root.string; |
| 3074 |
else |
| 3075 |
{ |
| 3076 |
name = (bfd_elf_string_from_elf_section |
| 3077 |
(input_bfd, symtab_hdr->sh_link, sym->st_name)); |
| 3078 |
if (name == NULL || *name == '\0') |
| 3079 |
name = bfd_section_name (input_bfd, sec); |
| 3080 |
} |
| 3081 |
|
| 3082 |
if (errmsg != NULL) |
| 3083 |
goto common_error; |
| 3084 |
|
| 3085 |
switch (r) |
| 3086 |
{ |
| 3087 |
case bfd_reloc_overflow: |
| 3088 |
if (! ((*info->callbacks->reloc_overflow) |
| 3089 |
(info, (h ? &h->root : NULL), name, howto->name, |
| 3090 |
(bfd_vma) 0, input_bfd, input_section, offset))) |
| 3091 |
return FALSE; |
| 3092 |
break; |
| 3093 |
|
| 3094 |
case bfd_reloc_undefined: |
| 3095 |
if (! ((*info->callbacks->undefined_symbol) |
| 3096 |
(info, name, input_bfd, input_section, |
| 3097 |
offset, TRUE))) |
| 3098 |
return FALSE; |
| 3099 |
break; |
| 3100 |
|
| 3101 |
case bfd_reloc_outofrange: |
| 3102 |
errmsg = _("internal error: out of range error"); |
| 3103 |
goto common_error; |
| 3104 |
|
| 3105 |
case bfd_reloc_notsupported: |
| 3106 |
errmsg = _("internal error: unsupported relocation error"); |
| 3107 |
goto common_error; |
| 3108 |
|
| 3109 |
case bfd_reloc_dangerous: |
| 3110 |
errmsg = _("internal error: dangerous error"); |
| 3111 |
goto common_error; |
| 3112 |
|
| 3113 |
default: |
| 3114 |
errmsg = _("internal error: unknown error"); |
| 3115 |
/* fall through */ |
| 3116 |
|
| 3117 |
common_error: |
| 3118 |
if (!((*info->callbacks->warning) |
| 3119 |
(info, errmsg, name, input_bfd, input_section, |
| 3120 |
offset))) |
| 3121 |
return FALSE; |
| 3122 |
break; |
| 3123 |
} |
| 3124 |
} |
| 3125 |
} |
| 3126 |
|
| 3127 |
return ret; |
| 3128 |
} |
| 3129 |
|
| 3130 |
/* Finish up dynamic symbol handling. We set the contents of various |
| 3131 |
dynamic sections here. */ |
| 3132 |
|
| 3133 |
static bfd_boolean |
| 3134 |
m32r_elf_finish_dynamic_symbol (bfd *output_bfd, |
| 3135 |
struct bfd_link_info *info, |
| 3136 |
struct elf_link_hash_entry *h, |
| 3137 |
Elf_Internal_Sym *sym) |
| 3138 |
{ |
| 3139 |
struct elf_m32r_link_hash_table *htab; |
| 3140 |
bfd *dynobj; |
| 3141 |
bfd_byte *loc; |
| 3142 |
|
| 3143 |
#ifdef DEBUG_PIC |
| 3144 |
printf ("m32r_elf_finish_dynamic_symbol()\n"); |
| 3145 |
#endif |
| 3146 |
|
| 3147 |
htab = m32r_elf_hash_table (info); |
| 3148 |
dynobj = htab->root.dynobj; |
| 3149 |
|
| 3150 |
if (h->plt.offset != (bfd_vma) -1) |
| 3151 |
{ |
| 3152 |
asection *splt; |
| 3153 |
asection *sgot; |
| 3154 |
asection *srela; |
| 3155 |
|
| 3156 |
bfd_vma plt_index; |
| 3157 |
bfd_vma got_offset; |
| 3158 |
Elf_Internal_Rela rela; |
| 3159 |
|
| 3160 |
/* This symbol has an entry in the procedure linkage table. Set |
| 3161 |
it up. */ |
| 3162 |
|
| 3163 |
BFD_ASSERT (h->dynindx != -1); |
| 3164 |
|
| 3165 |
splt = htab->splt; |
| 3166 |
sgot = htab->sgotplt; |
| 3167 |
srela = htab->srelplt; |
| 3168 |
BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); |
| 3169 |
|
| 3170 |
/* Get the index in the procedure linkage table which |
| 3171 |
corresponds to this symbol. This is the index of this symbol |
| 3172 |
in all the symbols for which we are making plt entries. The |
| 3173 |
first entry in the procedure linkage table is reserved. */ |
| 3174 |
plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; |
| 3175 |
|
| 3176 |
/* Get the offset into the .got table of the entry that |
| 3177 |
corresponds to this function. Each .got entry is 4 bytes. |
| 3178 |
The first three are reserved. */ |
| 3179 |
got_offset = (plt_index + 3) * 4; |
| 3180 |
|
| 3181 |
/* Fill in the entry in the procedure linkage table. */ |
| 3182 |
if (! info->shared) |
| 3183 |
{ |
| 3184 |
bfd_put_32 (output_bfd, |
| 3185 |
(PLT_ENTRY_WORD0b |
| 3186 |
+ (((sgot->output_section->vma |
| 3187 |
+ sgot->output_offset |
| 3188 |
+ got_offset) >> 16) & 0xffff)), |
| 3189 |
splt->contents + h->plt.offset); |
| 3190 |
bfd_put_32 (output_bfd, |
| 3191 |
(PLT_ENTRY_WORD1b |
| 3192 |
+ ((sgot->output_section->vma |
| 3193 |
+ sgot->output_offset |
| 3194 |
+ got_offset) & 0xffff)), |
| 3195 |
splt->contents + h->plt.offset + 4); |
| 3196 |
bfd_put_32 (output_bfd, PLT_ENTRY_WORD2, |
| 3197 |
splt->contents + h->plt.offset + 8); |
| 3198 |
bfd_put_32 (output_bfd, |
| 3199 |
(PLT_ENTRY_WORD3 |
| 3200 |
+ plt_index * sizeof (Elf32_External_Rela)), |
| 3201 |
splt->contents + h->plt.offset + 12); |
| 3202 |
bfd_put_32 (output_bfd, |
| 3203 |
(PLT_ENTRY_WORD4 |
| 3204 |
+ (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)), |
| 3205 |
splt->contents + h->plt.offset + 16); |
| 3206 |
} |
| 3207 |
else |
| 3208 |
{ |
| 3209 |
bfd_put_32 (output_bfd, |
| 3210 |
PLT_ENTRY_WORD0 + got_offset, |
| 3211 |
splt->contents + h->plt.offset); |
| 3212 |
bfd_put_32 (output_bfd, PLT_ENTRY_WORD1, |
| 3213 |
splt->contents + h->plt.offset + 4); |
| 3214 |
bfd_put_32 (output_bfd, PLT_ENTRY_WORD2, |
| 3215 |
splt->contents + h->plt.offset + 8); |
| 3216 |
bfd_put_32 (output_bfd, |
| 3217 |
(PLT_ENTRY_WORD3 |
| 3218 |
+ plt_index * sizeof (Elf32_External_Rela)), |
| 3219 |
splt->contents + h->plt.offset + 12); |
| 3220 |
bfd_put_32 (output_bfd, |
| 3221 |
(PLT_ENTRY_WORD4 |
| 3222 |
+ (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)), |
| 3223 |
splt->contents + h->plt.offset + 16); |
| 3224 |
} |
| 3225 |
|
| 3226 |
/* Fill in the entry in the global offset table. */ |
| 3227 |
bfd_put_32 (output_bfd, |
| 3228 |
(splt->output_section->vma |
| 3229 |
+ splt->output_offset |
| 3230 |
+ h->plt.offset |
| 3231 |
+ 12), /* same offset */ |
| 3232 |
sgot->contents + got_offset); |
| 3233 |
|
| 3234 |
/* Fill in the entry in the .rela.plt section. */ |
| 3235 |
rela.r_offset = (sgot->output_section->vma |
| 3236 |
+ sgot->output_offset |
| 3237 |
+ got_offset); |
| 3238 |
rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_JMP_SLOT); |
| 3239 |
rela.r_addend = 0; |
| 3240 |
loc = srela->contents; |
| 3241 |
loc += plt_index * sizeof (Elf32_External_Rela); |
| 3242 |
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
| 3243 |
|
| 3244 |
if (!h->def_regular) |
| 3245 |
{ |
| 3246 |
/* Mark the symbol as undefined, rather than as defined in |
| 3247 |
the .plt section. Leave the value alone. */ |
| 3248 |
sym->st_shndx = SHN_UNDEF; |
| 3249 |
} |
| 3250 |
} |
| 3251 |
|
| 3252 |
if (h->got.offset != (bfd_vma) -1) |
| 3253 |
{ |
| 3254 |
asection *sgot; |
| 3255 |
asection *srela; |
| 3256 |
Elf_Internal_Rela rela; |
| 3257 |
|
| 3258 |
/* This symbol has an entry in the global offset table. Set it |
| 3259 |
up. */ |
| 3260 |
|
| 3261 |
sgot = htab->sgot; |
| 3262 |
srela = htab->srelgot; |
| 3263 |
BFD_ASSERT (sgot != NULL && srela != NULL); |
| 3264 |
|
| 3265 |
rela.r_offset = (sgot->output_section->vma |
| 3266 |
+ sgot->output_offset |
| 3267 |
+ (h->got.offset &~ 1)); |
| 3268 |
|
| 3269 |
/* If this is a -Bsymbolic link, and the symbol is defined |
| 3270 |
locally, we just want to emit a RELATIVE reloc. Likewise if |
| 3271 |
the symbol was forced to be local because of a version file. |
| 3272 |
The entry in the global offset table will already have been |
| 3273 |
initialized in the relocate_section function. */ |
| 3274 |
if (info->shared |
| 3275 |
&& (info->symbolic |
| 3276 |
|| h->dynindx == -1 |
| 3277 |
|| h->forced_local) |
| 3278 |
&& h->def_regular) |
| 3279 |
{ |
| 3280 |
rela.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); |
| 3281 |
rela.r_addend = (h->root.u.def.value |
| 3282 |
+ h->root.u.def.section->output_section->vma |
| 3283 |
+ h->root.u.def.section->output_offset); |
| 3284 |
} |
| 3285 |
else |
| 3286 |
{ |
| 3287 |
BFD_ASSERT ((h->got.offset & 1) == 0); |
| 3288 |
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); |
| 3289 |
rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_GLOB_DAT); |
| 3290 |
rela.r_addend = 0; |
| 3291 |
} |
| 3292 |
|
| 3293 |
loc = srela->contents; |
| 3294 |
loc += srela->reloc_count * sizeof (Elf32_External_Rela); |
| 3295 |
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
| 3296 |
++srela->reloc_count; |
| 3297 |
} |
| 3298 |
|
| 3299 |
if (h->needs_copy) |
| 3300 |
{ |
| 3301 |
asection *s; |
| 3302 |
Elf_Internal_Rela rela; |
| 3303 |
|
| 3304 |
/* This symbols needs a copy reloc. Set it up. */ |
| 3305 |
|
| 3306 |
BFD_ASSERT (h->dynindx != -1 |
| 3307 |
&& (h->root.type == bfd_link_hash_defined |
| 3308 |
|| h->root.type == bfd_link_hash_defweak)); |
| 3309 |
|
| 3310 |
s = bfd_get_section_by_name (h->root.u.def.section->owner, |
| 3311 |
".rela.bss"); |
| 3312 |
BFD_ASSERT (s != NULL); |
| 3313 |
|
| 3314 |
rela.r_offset = (h->root.u.def.value |
| 3315 |
+ h->root.u.def.section->output_section->vma |
| 3316 |
+ h->root.u.def.section->output_offset); |
| 3317 |
rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_COPY); |
| 3318 |
rela.r_addend = 0; |
| 3319 |
loc = s->contents; |
| 3320 |
loc += s->reloc_count * sizeof (Elf32_External_Rela); |
| 3321 |
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
| 3322 |
++s->reloc_count; |
| 3323 |
} |
| 3324 |
|
| 3325 |
/* Mark some specially defined symbols as absolute. */ |
| 3326 |
if (strcmp (h->root.root.string, "_DYNAMIC") == 0 |
| 3327 |
|| h == htab->root.hgot) |
| 3328 |
sym->st_shndx = SHN_ABS; |
| 3329 |
|
| 3330 |
return TRUE; |
| 3331 |
} |
| 3332 |
|
| 3333 |
|
| 3334 |
/* Finish up the dynamic sections. */ |
| 3335 |
|
| 3336 |
static bfd_boolean |
| 3337 |
m32r_elf_finish_dynamic_sections (bfd *output_bfd, |
| 3338 |
struct bfd_link_info *info) |
| 3339 |
{ |
| 3340 |
struct elf_m32r_link_hash_table *htab; |
| 3341 |
bfd *dynobj; |
| 3342 |
asection *sdyn; |
| 3343 |
asection *sgot; |
| 3344 |
|
| 3345 |
#ifdef DEBUG_PIC |
| 3346 |
printf ("m32r_elf_finish_dynamic_sections()\n"); |
| 3347 |
#endif |
| 3348 |
|
| 3349 |
htab = m32r_elf_hash_table (info); |
| 3350 |
dynobj = htab->root.dynobj; |
| 3351 |
|
| 3352 |
sgot = htab->sgotplt; |
| 3353 |
sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
| 3354 |
|
| 3355 |
if (htab->root.dynamic_sections_created) |
| 3356 |
{ |
| 3357 |
asection *splt; |
| 3358 |
Elf32_External_Dyn *dyncon, *dynconend; |
| 3359 |
|
| 3360 |
BFD_ASSERT (sgot != NULL && sdyn != NULL); |
| 3361 |
|
| 3362 |
dyncon = (Elf32_External_Dyn *) sdyn->contents; |
| 3363 |
dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
| 3364 |
|
| 3365 |
for (; dyncon < dynconend; dyncon++) |
| 3366 |
{ |
| 3367 |
Elf_Internal_Dyn dyn; |
| 3368 |
const char *name; |
| 3369 |
asection *s; |
| 3370 |
|
| 3371 |
bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
| 3372 |
|
| 3373 |
switch (dyn.d_tag) |
| 3374 |
{ |
| 3375 |
default: |
| 3376 |
break; |
| 3377 |
|
| 3378 |
case DT_PLTGOT: |
| 3379 |
name = ".got"; |
| 3380 |
s = htab->sgot->output_section; |
| 3381 |
goto get_vma; |
| 3382 |
case DT_JMPREL: |
| 3383 |
name = ".rela.plt"; |
| 3384 |
s = htab->srelplt->output_section; |
| 3385 |
get_vma: |
| 3386 |
BFD_ASSERT (s != NULL); |
| 3387 |
dyn.d_un.d_ptr = s->vma; |
| 3388 |
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 3389 |
break; |
| 3390 |
|
| 3391 |
case DT_PLTRELSZ: |
| 3392 |
s = htab->srelplt->output_section; |
| 3393 |
BFD_ASSERT (s != NULL); |
| 3394 |
dyn.d_un.d_val = s->size; |
| 3395 |
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 3396 |
break; |
| 3397 |
|
| 3398 |
case DT_RELASZ: |
| 3399 |
/* My reading of the SVR4 ABI indicates that the |
| 3400 |
procedure linkage table relocs (DT_JMPREL) should be |
| 3401 |
included in the overall relocs (DT_RELA). This is |
| 3402 |
what Solaris does. However, UnixWare can not handle |
| 3403 |
that case. Therefore, we override the DT_RELASZ entry |
| 3404 |
here to make it not include the JMPREL relocs. Since |
| 3405 |
the linker script arranges for .rela.plt to follow all |
| 3406 |
other relocation sections, we don't have to worry |
| 3407 |
about changing the DT_RELA entry. */ |
| 3408 |
if (htab->srelplt != NULL) |
| 3409 |
{ |
| 3410 |
s = htab->srelplt->output_section; |
| 3411 |
dyn.d_un.d_val -= s->size; |
| 3412 |
} |
| 3413 |
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 3414 |
break; |
| 3415 |
} |
| 3416 |
} |
| 3417 |
|
| 3418 |
/* Fill in the first entry in the procedure linkage table. */ |
| 3419 |
splt = htab->splt; |
| 3420 |
if (splt && splt->size > 0) |
| 3421 |
{ |
| 3422 |
if (info->shared) |
| 3423 |
{ |
| 3424 |
bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents); |
| 3425 |
bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4); |
| 3426 |
bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8); |
| 3427 |
bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12); |
| 3428 |
bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16); |
| 3429 |
} |
| 3430 |
else |
| 3431 |
{ |
| 3432 |
unsigned long addr; |
| 3433 |
/* addr = .got + 4 */ |
| 3434 |
addr = sgot->output_section->vma + sgot->output_offset + 4; |
| 3435 |
bfd_put_32 (output_bfd, |
| 3436 |
PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff), |
| 3437 |
splt->contents); |
| 3438 |
bfd_put_32 (output_bfd, |
| 3439 |
PLT0_ENTRY_WORD1 | (addr & 0xffff), |
| 3440 |
splt->contents + 4); |
| 3441 |
bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8); |
| 3442 |
bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12); |
| 3443 |
bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16); |
| 3444 |
} |
| 3445 |
|
| 3446 |
elf_section_data (splt->output_section)->this_hdr.sh_entsize = |
| 3447 |
PLT_ENTRY_SIZE; |
| 3448 |
} |
| 3449 |
} |
| 3450 |
|
| 3451 |
/* Fill in the first three entries in the global offset table. */ |
| 3452 |
if (sgot && sgot->size > 0) |
| 3453 |
{ |
| 3454 |
if (sdyn == NULL) |
| 3455 |
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); |
| 3456 |
else |
| 3457 |
bfd_put_32 (output_bfd, |
| 3458 |
sdyn->output_section->vma + sdyn->output_offset, |
| 3459 |
sgot->contents); |
| 3460 |
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); |
| 3461 |
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); |
| 3462 |
|
| 3463 |
elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; |
| 3464 |
} |
| 3465 |
|
| 3466 |
return TRUE; |
| 3467 |
} |
| 3468 |
|
| 3469 |
|
| 3470 |
/* Set the right machine number. */ |
| 3471 |
|
| 3472 |
static bfd_boolean |
| 3473 |
m32r_elf_object_p (bfd *abfd) |
| 3474 |
{ |
| 3475 |
switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH) |
| 3476 |
{ |
| 3477 |
default: |
| 3478 |
case E_M32R_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r); break; |
| 3479 |
case E_M32RX_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32rx); break; |
| 3480 |
case E_M32R2_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r2); break; |
| 3481 |
} |
| 3482 |
return TRUE; |
| 3483 |
} |
| 3484 |
|
| 3485 |
/* Store the machine number in the flags field. */ |
| 3486 |
|
| 3487 |
static void |
| 3488 |
m32r_elf_final_write_processing (bfd *abfd, |
| 3489 |
bfd_boolean linker ATTRIBUTE_UNUSED) |
| 3490 |
{ |
| 3491 |
unsigned long val; |
| 3492 |
|
| 3493 |
switch (bfd_get_mach (abfd)) |
| 3494 |
{ |
| 3495 |
default: |
| 3496 |
case bfd_mach_m32r: val = E_M32R_ARCH; break; |
| 3497 |
case bfd_mach_m32rx: val = E_M32RX_ARCH; break; |
| 3498 |
case bfd_mach_m32r2: val = E_M32R2_ARCH; break; |
| 3499 |
} |
| 3500 |
|
| 3501 |
elf_elfheader (abfd)->e_flags &=~ EF_M32R_ARCH; |
| 3502 |
elf_elfheader (abfd)->e_flags |= val; |
| 3503 |
} |
| 3504 |
|
| 3505 |
/* Function to keep M32R specific file flags. */ |
| 3506 |
|
| 3507 |
static bfd_boolean |
| 3508 |
m32r_elf_set_private_flags (bfd *abfd, flagword flags) |
| 3509 |
{ |
| 3510 |
BFD_ASSERT (!elf_flags_init (abfd) |
| 3511 |
|| elf_elfheader (abfd)->e_flags == flags); |
| 3512 |
|
| 3513 |
elf_elfheader (abfd)->e_flags = flags; |
| 3514 |
elf_flags_init (abfd) = TRUE; |
| 3515 |
return TRUE; |
| 3516 |
} |
| 3517 |
|
| 3518 |
/* Merge backend specific data from an object file to the output |
| 3519 |
object file when linking. */ |
| 3520 |
|
| 3521 |
static bfd_boolean |
| 3522 |
m32r_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
| 3523 |
{ |