/* Motorola 68HC11-specific support for 32-bit ELF
- Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
- Free Software Foundation, Inc.
+ Copyright (C) 1999-2020 Free Software Foundation, Inc.
Contributed by Stephane Carrez (stcarrez@nerim.fr)
(Heavily copied from the D10V port by Martin Hunt (hunt@cygnus.com))
-This file is part of BFD, the Binary File Descriptor library.
+ This file is part of BFD, the Binary File Descriptor library.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
-#include "bfd.h"
#include "sysdep.h"
+#include "bfd.h"
#include "bfdlink.h"
#include "libbfd.h"
#include "elf-bfd.h"
/* Relocation functions. */
static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
(bfd *, bfd_reloc_code_real_type);
-static void m68hc11_info_to_howto_rel
+static bfd_boolean m68hc11_info_to_howto_rel
(bfd *, arelent *, Elf_Internal_Rela *);
/* Trampoline generation. */
/* This reloc does nothing. */
HOWTO (R_M68HC11_NONE, /* type */
0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
+ 3, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
FALSE, /* partial_inplace */
0x00ff, /* src_mask */
0x00ff, /* dst_mask */
- TRUE), /* pcrel_offset */
+ TRUE), /* pcrel_offset */
/* A 16 bit absolute relocation */
HOWTO (R_M68HC11_16, /* type */
FALSE, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
- TRUE), /* pcrel_offset */
+ TRUE), /* pcrel_offset */
/* GNU extension to record C++ vtable hierarchy */
HOWTO (R_M68HC11_GNU_VTINHERIT, /* type */
FALSE), /* pcrel_offset */
/* A 24 bit relocation */
- HOWTO (R_M68HC11_24, /* type */
+ HOWTO (R_M68HC11_24, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
24, /* bitsize */
FALSE), /* pcrel_offset */
/* A 16-bit low relocation */
- HOWTO (R_M68HC11_LO16, /* type */
+ HOWTO (R_M68HC11_LO16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE), /* pcrel_offset */
/* A page relocation */
- HOWTO (R_M68HC11_PAGE, /* type */
+ HOWTO (R_M68HC11_PAGE, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
8, /* bitsize */
TRUE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
- TRUE), /* pcrel_offset */
+ TRUE), /* pcrel_offset */
/* Mark beginning of Gcc relaxation group instruction. */
HOWTO (R_M68HC11_RL_GROUP, /* type */
TRUE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
- TRUE), /* pcrel_offset */
+ TRUE), /* pcrel_offset */
};
/* Map BFD reloc types to M68HC11 ELF reloc types. */
static reloc_howto_type *
bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
- bfd_reloc_code_real_type code)
+ bfd_reloc_code_real_type code)
{
unsigned int i;
return NULL;
}
+static reloc_howto_type *
+bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ const char *r_name)
+{
+ unsigned int i;
+
+ for (i = 0;
+ i < (sizeof (elf_m68hc11_howto_table)
+ / sizeof (elf_m68hc11_howto_table[0]));
+ i++)
+ if (elf_m68hc11_howto_table[i].name != NULL
+ && strcasecmp (elf_m68hc11_howto_table[i].name, r_name) == 0)
+ return &elf_m68hc11_howto_table[i];
+
+ return NULL;
+}
+
/* Set the howto pointer for an M68HC11 ELF reloc. */
-static void
-m68hc11_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
- arelent *cache_ptr, Elf_Internal_Rela *dst)
+static bfd_boolean
+m68hc11_info_to_howto_rel (bfd *abfd,
+ arelent *cache_ptr, Elf_Internal_Rela *dst)
{
unsigned int r_type;
r_type = ELF32_R_TYPE (dst->r_info);
- BFD_ASSERT (r_type < (unsigned int) R_M68HC11_max);
+ if (r_type >= (unsigned int) R_M68HC11_max)
+ {
+ /* xgettext:c-format */
+ _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
+ abfd, r_type);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
cache_ptr->howto = &elf_m68hc11_howto_table[r_type];
+ return TRUE;
}
\f
stub_entry = (struct elf32_m68hc11_stub_hash_entry *) gen_entry;
info = (struct bfd_link_info *) in_arg;
+ /* Fail if the target section could not be assigned to an output
+ section. The user should fix his linker script. */
+ if (stub_entry->target_section->output_section == NULL
+ && info->non_contiguous_regions)
+ info->callbacks->einfo (_("%F%P: Could not assign '%pA' to an output section. "
+ "Retry without --enable-non-contiguous-regions.\n"),
+ stub_entry->target_section);
+
htab = m68hc11_elf_hash_table (info);
+ if (htab == NULL)
+ return FALSE;
stub_sec = stub_entry->stub_sec;
*/
sym_value = (stub_entry->target_value
- + stub_entry->target_section->output_offset
- + stub_entry->target_section->output_section->vma);
+ + stub_entry->target_section->output_offset
+ + stub_entry->target_section->output_section->vma);
phys_addr = m68hc11_phys_addr (&htab->pinfo, sym_value);
phys_page = m68hc11_phys_page (&htab->pinfo, sym_value);
static bfd_boolean
m68hc11_elf_size_one_stub (struct bfd_hash_entry *gen_entry,
- void *in_arg ATTRIBUTE_UNUSED)
+ void *in_arg ATTRIBUTE_UNUSED)
{
struct elf32_m68hc11_stub_hash_entry *stub_entry;
static void
m68hc11_relax_group (bfd *abfd, asection *sec, bfd_byte *contents,
- unsigned value, unsigned long offset,
- unsigned long end_group)
+ unsigned value, unsigned long offset,
+ unsigned long end_group)
{
unsigned char code;
unsigned long start_offset;
start_offset = offset;
code = bfd_get_8 (abfd, contents + offset);
if (code == 0x18)
- {
- bset_use_y++;
- offset++;
- code = bfd_get_8 (abfd, contents + offset);
- }
+ {
+ bset_use_y++;
+ offset++;
+ code = bfd_get_8 (abfd, contents + offset);
+ }
/* Check the instruction and translate to use direct addressing mode. */
switch (code)
- {
- /* bset */
- case 0x1C:
- code = 0x14;
- isize = 3;
- break;
-
- /* brclr */
- case 0x1F:
- code = 0x13;
- isize = 4;
- break;
-
- /* brset */
- case 0x1E:
- code = 0x12;
- isize = 4;
- break;
-
- /* bclr */
- case 0x1D:
- code = 0x15;
- isize = 3;
- break;
-
- /* This instruction is not recognized and we are not
- at end of the relax group. Ignore and don't remove
- the first LDX (we don't know what it is used for...). */
- default:
- return;
- }
+ {
+ /* bset */
+ case 0x1C:
+ code = 0x14;
+ isize = 3;
+ break;
+
+ /* brclr */
+ case 0x1F:
+ code = 0x13;
+ isize = 4;
+ break;
+
+ /* brset */
+ case 0x1E:
+ code = 0x12;
+ isize = 4;
+ break;
+
+ /* bclr */
+ case 0x1D:
+ code = 0x15;
+ isize = 3;
+ break;
+
+ /* This instruction is not recognized and we are not
+ at end of the relax group. Ignore and don't remove
+ the first LDX (we don't know what it is used for...). */
+ default:
+ return;
+ }
new_value = (unsigned) bfd_get_8 (abfd, contents + offset + 1);
new_value += value;
if ((new_value & 0xff00) == 0 && bset_use_y == relax_ldy)
- {
- bfd_put_8 (abfd, code, contents + offset);
- bfd_put_8 (abfd, new_value, contents + offset + 1);
- if (start_offset != offset)
- {
- m68hc11_elf_relax_delete_bytes (abfd, sec, start_offset,
- offset - start_offset);
- end_group--;
- }
- }
+ {
+ bfd_put_8 (abfd, code, contents + offset);
+ bfd_put_8 (abfd, new_value, contents + offset + 1);
+ if (start_offset != offset)
+ {
+ m68hc11_elf_relax_delete_bytes (abfd, sec, start_offset,
+ offset - start_offset);
+ end_group--;
+ }
+ }
else
- {
- can_delete_ldx = 0;
- }
+ {
+ can_delete_ldx = 0;
+ }
offset = start_offset + isize;
}
if (can_delete_ldx)
static bfd_boolean
m68hc11_elf_relax_section (bfd *abfd, asection *sec,
- struct bfd_link_info *link_info, bfd_boolean *again)
+ struct bfd_link_info *link_info, bfd_boolean *again)
{
Elf_Internal_Shdr *symtab_hdr;
- Elf_Internal_Shdr *shndx_hdr;
Elf_Internal_Rela *internal_relocs;
Elf_Internal_Rela *free_relocs = NULL;
Elf_Internal_Rela *irel, *irelend;
/* We don't have to do anything for a relocatable link, if
this section does not have relocs, or if this is not a
code section. */
- if (link_info->relocatable
+ if (bfd_link_relocatable (link_info)
|| (sec->flags & SEC_RELOC) == 0
|| sec->reloc_count == 0
|| (sec->flags & SEC_CODE) == 0)
return TRUE;
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
/* Get a copy of the native relocations. */
internal_relocs = (_bfd_elf_link_read_relocs
- (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
+ (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
link_info->keep_memory));
if (internal_relocs == NULL)
goto error_return;
/* Checking for branch relaxation relies on the relocations to
be sorted on 'r_offset'. This is not guaranteed so we must sort. */
qsort (internal_relocs, sec->reloc_count, sizeof (Elf_Internal_Rela),
- compare_reloc);
+ compare_reloc);
/* Walk through them looking for relaxing opportunities. */
irelend = internal_relocs + sec->reloc_count;
/* If this isn't something that can be relaxed, then ignore
this reloc. */
if (ELF32_R_TYPE (irel->r_info) != (int) R_M68HC11_16
- && ELF32_R_TYPE (irel->r_info) != (int) R_M68HC11_RL_JUMP
- && ELF32_R_TYPE (irel->r_info) != (int) R_M68HC11_RL_GROUP)
- {
- prev_insn_branch = 0;
- prev_insn_group = 0;
- continue;
- }
+ && ELF32_R_TYPE (irel->r_info) != (int) R_M68HC11_RL_JUMP
+ && ELF32_R_TYPE (irel->r_info) != (int) R_M68HC11_RL_GROUP)
+ {
+ prev_insn_branch = 0;
+ prev_insn_group = 0;
+ continue;
+ }
/* Get the section contents if we haven't done so already. */
if (contents == NULL)
{
Elf_Internal_Rela *nrel;
unsigned char code;
- unsigned char roffset;
+ unsigned char roffset;
- prev_insn_branch = 0;
- prev_insn_group = 0;
+ prev_insn_branch = 0;
+ prev_insn_group = 0;
/* Do nothing if this reloc is the last byte in the section. */
if (irel->r_offset + 2 >= sec->size)
/* Make sure our destination immediately follows the
unconditional branch. */
- roffset = bfd_get_8 (abfd, contents + irel->r_offset + 1);
- if (roffset != 3)
- continue;
+ roffset = bfd_get_8 (abfd, contents + irel->r_offset + 1);
+ if (roffset != 3)
+ continue;
- prev_insn_branch = irel;
- prev_insn_group = 0;
- continue;
- }
+ prev_insn_branch = irel;
+ prev_insn_group = 0;
+ continue;
+ }
/* Read this BFD's symbols if we haven't done so already. */
if (isymbuf == NULL && symtab_hdr->sh_info != 0)
{
/* A local symbol. */
isym = isymbuf + ELF32_R_SYM (irel->r_info);
- is_far = isym->st_other & STO_M68HC12_FAR;
- sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
+ is_far = isym->st_other & STO_M68HC12_FAR;
+ sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
symval = (isym->st_value
+ sym_sec->output_section->vma
+ sym_sec->output_offset);
&& h->root.type != bfd_link_hash_defweak)
{
/* This appears to be a reference to an undefined
- symbol. Just ignore it--it will be caught by the
- regular reloc processing. */
- prev_insn_branch = 0;
- prev_insn_group = 0;
+ symbol. Just ignore it--it will be caught by the
+ regular reloc processing. */
+ prev_insn_branch = 0;
+ prev_insn_group = 0;
continue;
}
- is_far = h->other & STO_M68HC12_FAR;
- isym = 0;
- sym_sec = h->root.u.def.section;
+ is_far = h->other & STO_M68HC12_FAR;
+ isym = 0;
+ sym_sec = h->root.u.def.section;
symval = (h->root.u.def.value
+ sym_sec->output_section->vma
+ sym_sec->output_offset);
if (ELF32_R_TYPE (irel->r_info) == (int) R_M68HC11_RL_GROUP)
{
- prev_insn_branch = 0;
- prev_insn_group = 0;
+ prev_insn_branch = 0;
+ prev_insn_group = 0;
/* Do nothing if this reloc is the last byte in the section. */
if (irel->r_offset == sec->size)
continue;
- prev_insn_group = irel;
- insn_group_value = isym->st_value;
- continue;
- }
+ prev_insn_group = irel;
+ insn_group_value = isym->st_value;
+ continue;
+ }
/* When we relax some bytes, the size of our section changes.
- This affects the layout of next input sections that go in our
- output section. When the symbol is part of another section that
- will go in the same output section as the current one, it's
- final address may now be incorrect (too far). We must let the
- linker re-compute all section offsets before processing this
- reloc. Code example:
-
- Initial Final
- .sect .text section size = 6 section size = 4
- jmp foo
- jmp bar
- .sect .text.foo_bar output_offset = 6 output_offset = 4
- foo: rts
- bar: rts
-
- If we process the reloc now, the jmp bar is replaced by a
- relative branch to the initial bar address (output_offset 6). */
+ This affects the layout of next input sections that go in our
+ output section. When the symbol is part of another section that
+ will go in the same output section as the current one, it's
+ final address may now be incorrect (too far). We must let the
+ linker re-compute all section offsets before processing this
+ reloc. Code example:
+
+ Initial Final
+ .sect .text section size = 6 section size = 4
+ jmp foo
+ jmp bar
+ .sect .text.foo_bar output_offset = 6 output_offset = 4
+ foo: rts
+ bar: rts
+
+ If we process the reloc now, the jmp bar is replaced by a
+ relative branch to the initial bar address (output_offset 6). */
if (*again && sym_sec != sec
- && sym_sec->output_section == sec->output_section)
- {
- prev_insn_group = 0;
- prev_insn_branch = 0;
- continue;
- }
+ && sym_sec->output_section == sec->output_section)
+ {
+ prev_insn_group = 0;
+ prev_insn_branch = 0;
+ continue;
+ }
value = symval;
/* Try to turn a far branch to a near branch. */
if (ELF32_R_TYPE (irel->r_info) == (int) R_M68HC11_16
- && prev_insn_branch)
- {
- bfd_vma offset;
- unsigned char code;
-
- offset = value - (prev_insn_branch->r_offset
- + sec->output_section->vma
- + sec->output_offset + 2);
-
- /* If the offset is still out of -128..+127 range,
- leave that far branch unchanged. */
- if ((offset & 0xff80) != 0 && (offset & 0xff80) != 0xff80)
- {
- prev_insn_branch = 0;
- continue;
- }
-
- /* Shrink the branch. */
- code = bfd_get_8 (abfd, contents + prev_insn_branch->r_offset);
- if (code == 0x7e)
- {
- code = 0x20;
- bfd_put_8 (abfd, code, contents + prev_insn_branch->r_offset);
- bfd_put_8 (abfd, 0xff,
- contents + prev_insn_branch->r_offset + 1);
- irel->r_offset = prev_insn_branch->r_offset + 1;
- irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
- R_M68HC11_PCREL_8);
- m68hc11_elf_relax_delete_bytes (abfd, sec,
- irel->r_offset + 1, 1);
- }
- else
- {
- code ^= 0x1;
- bfd_put_8 (abfd, code, contents + prev_insn_branch->r_offset);
- bfd_put_8 (abfd, 0xff,
- contents + prev_insn_branch->r_offset + 1);
- irel->r_offset = prev_insn_branch->r_offset + 1;
- irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
- R_M68HC11_PCREL_8);
- m68hc11_elf_relax_delete_bytes (abfd, sec,
- irel->r_offset + 1, 3);
- }
- prev_insn_branch = 0;
- *again = TRUE;
- }
+ && prev_insn_branch)
+ {
+ bfd_vma offset;
+ unsigned char code;
+
+ offset = value - (prev_insn_branch->r_offset
+ + sec->output_section->vma
+ + sec->output_offset + 2);
+
+ /* If the offset is still out of -128..+127 range,
+ leave that far branch unchanged. */
+ if ((offset & 0xff80) != 0 && (offset & 0xff80) != 0xff80)
+ {
+ prev_insn_branch = 0;
+ continue;
+ }
+
+ /* Shrink the branch. */
+ code = bfd_get_8 (abfd, contents + prev_insn_branch->r_offset);
+ if (code == 0x7e)
+ {
+ code = 0x20;
+ bfd_put_8 (abfd, code, contents + prev_insn_branch->r_offset);
+ bfd_put_8 (abfd, 0xff,
+ contents + prev_insn_branch->r_offset + 1);
+ irel->r_offset = prev_insn_branch->r_offset + 1;
+ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ R_M68HC11_PCREL_8);
+ m68hc11_elf_relax_delete_bytes (abfd, sec,
+ irel->r_offset + 1, 1);
+ }
+ else
+ {
+ code ^= 0x1;
+ bfd_put_8 (abfd, code, contents + prev_insn_branch->r_offset);
+ bfd_put_8 (abfd, 0xff,
+ contents + prev_insn_branch->r_offset + 1);
+ irel->r_offset = prev_insn_branch->r_offset + 1;
+ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ R_M68HC11_PCREL_8);
+ m68hc11_elf_relax_delete_bytes (abfd, sec,
+ irel->r_offset + 1, 3);
+ }
+ prev_insn_branch = 0;
+ *again = TRUE;
+ }
/* Try to turn a 16 bit address into a 8 bit page0 address. */
else if (ELF32_R_TYPE (irel->r_info) == (int) R_M68HC11_16
- && (value & 0xff00) == 0)
+ && (value & 0xff00) == 0)
{
- unsigned char code;
- unsigned short offset;
- struct m68hc11_direct_relax *rinfo;
-
- prev_insn_branch = 0;
- offset = bfd_get_16 (abfd, contents + irel->r_offset);
- offset += value;
- if ((offset & 0xff00) != 0)
- {
- prev_insn_group = 0;
- continue;
- }
-
- if (prev_insn_group)
- {
- unsigned long old_sec_size = sec->size;
-
- /* Note that we've changed the relocation contents, etc. */
- elf_section_data (sec)->relocs = internal_relocs;
- free_relocs = NULL;
-
- elf_section_data (sec)->this_hdr.contents = contents;
- free_contents = NULL;
-
- symtab_hdr->contents = (bfd_byte *) isymbuf;
- free_extsyms = NULL;
-
- m68hc11_relax_group (abfd, sec, contents, offset,
- prev_insn_group->r_offset,
- insn_group_value);
- irel = prev_insn_group;
- prev_insn_group = 0;
- irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
- R_M68HC11_NONE);
- if (sec->size != old_sec_size)
- *again = TRUE;
- continue;
- }
-
- /* Get the opcode. */
- code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
- rinfo = find_relaxable_insn (code);
- if (rinfo == 0)
- {
- prev_insn_group = 0;
- continue;
- }
-
- /* Note that we've changed the relocation contents, etc. */
- elf_section_data (sec)->relocs = internal_relocs;
- free_relocs = NULL;
-
- elf_section_data (sec)->this_hdr.contents = contents;
- free_contents = NULL;
-
- symtab_hdr->contents = (bfd_byte *) isymbuf;
- free_extsyms = NULL;
-
- /* Fix the opcode. */
- /* printf ("A relaxable case : 0x%02x (%s)\n",
- code, rinfo->name); */
- bfd_put_8 (abfd, rinfo->direct_code,
- contents + irel->r_offset - 1);
-
- /* Delete one byte of data (upper byte of address). */
- m68hc11_elf_relax_delete_bytes (abfd, sec, irel->r_offset, 1);
-
- /* Fix the relocation's type. */
- irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
- R_M68HC11_8);
-
- /* That will change things, so, we should relax again. */
- *again = TRUE;
- }
+ unsigned char code;
+ unsigned short offset;
+ struct m68hc11_direct_relax *rinfo;
+
+ prev_insn_branch = 0;
+ offset = bfd_get_16 (abfd, contents + irel->r_offset);
+ offset += value;
+ if ((offset & 0xff00) != 0)
+ {
+ prev_insn_group = 0;
+ continue;
+ }
+
+ if (prev_insn_group)
+ {
+ unsigned long old_sec_size = sec->size;
+
+ /* Note that we've changed the relocation contents, etc. */
+ elf_section_data (sec)->relocs = internal_relocs;
+ free_relocs = NULL;
+
+ elf_section_data (sec)->this_hdr.contents = contents;
+ free_contents = NULL;
+
+ symtab_hdr->contents = (bfd_byte *) isymbuf;
+ free_extsyms = NULL;
+
+ m68hc11_relax_group (abfd, sec, contents, offset,
+ prev_insn_group->r_offset,
+ insn_group_value);
+ irel = prev_insn_group;
+ prev_insn_group = 0;
+ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ R_M68HC11_NONE);
+ if (sec->size != old_sec_size)
+ *again = TRUE;
+ continue;
+ }
+
+ /* Get the opcode. */
+ code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
+ rinfo = find_relaxable_insn (code);
+ if (rinfo == 0)
+ {
+ prev_insn_group = 0;
+ continue;
+ }
+
+ /* Note that we've changed the relocation contents, etc. */
+ elf_section_data (sec)->relocs = internal_relocs;
+ free_relocs = NULL;
+
+ elf_section_data (sec)->this_hdr.contents = contents;
+ free_contents = NULL;
+
+ symtab_hdr->contents = (bfd_byte *) isymbuf;
+ free_extsyms = NULL;
+
+ /* Fix the opcode. */
+ /* printf ("A relaxable case : 0x%02x (%s)\n",
+ code, rinfo->name); */
+ bfd_put_8 (abfd, rinfo->direct_code,
+ contents + irel->r_offset - 1);
+
+ /* Delete one byte of data (upper byte of address). */
+ m68hc11_elf_relax_delete_bytes (abfd, sec, irel->r_offset, 1);
+
+ /* Fix the relocation's type. */
+ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ R_M68HC11_8);
+
+ /* That will change things, so, we should relax again. */
+ *again = TRUE;
+ }
else if (ELF32_R_TYPE (irel->r_info) == R_M68HC11_16 && !is_far)
- {
- unsigned char code;
- bfd_vma offset;
-
- prev_insn_branch = 0;
- code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
- if (code == 0x7e || code == 0xbd)
- {
- offset = value - (irel->r_offset
- + sec->output_section->vma
- + sec->output_offset + 1);
- offset += bfd_get_16 (abfd, contents + irel->r_offset);
-
- /* If the offset is still out of -128..+127 range,
- leave that far branch unchanged. */
- if ((offset & 0xff80) == 0 || (offset & 0xff80) == 0xff80)
- {
-
- /* Note that we've changed the relocation contents, etc. */
- elf_section_data (sec)->relocs = internal_relocs;
- free_relocs = NULL;
-
- elf_section_data (sec)->this_hdr.contents = contents;
- free_contents = NULL;
-
- symtab_hdr->contents = (bfd_byte *) isymbuf;
- free_extsyms = NULL;
-
- /* Shrink the branch. */
- code = (code == 0x7e) ? 0x20 : 0x8d;
- bfd_put_8 (abfd, code,
- contents + irel->r_offset - 1);
- bfd_put_8 (abfd, 0xff,
- contents + irel->r_offset);
- irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
- R_M68HC11_PCREL_8);
- m68hc11_elf_relax_delete_bytes (abfd, sec,
- irel->r_offset + 1, 1);
- /* That will change things, so, we should relax again. */
- *again = TRUE;
- }
- }
- }
+ {
+ unsigned char code;
+ bfd_vma offset;
+
+ prev_insn_branch = 0;
+ code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
+ if (code == 0x7e || code == 0xbd)
+ {
+ offset = value - (irel->r_offset
+ + sec->output_section->vma
+ + sec->output_offset + 1);
+ offset += bfd_get_16 (abfd, contents + irel->r_offset);
+
+ /* If the offset is still out of -128..+127 range,
+ leave that far branch unchanged. */
+ if ((offset & 0xff80) == 0 || (offset & 0xff80) == 0xff80)
+ {
+
+ /* Note that we've changed the relocation contents, etc. */
+ elf_section_data (sec)->relocs = internal_relocs;
+ free_relocs = NULL;
+
+ elf_section_data (sec)->this_hdr.contents = contents;
+ free_contents = NULL;
+
+ symtab_hdr->contents = (bfd_byte *) isymbuf;
+ free_extsyms = NULL;
+
+ /* Shrink the branch. */
+ code = (code == 0x7e) ? 0x20 : 0x8d;
+ bfd_put_8 (abfd, code,
+ contents + irel->r_offset - 1);
+ bfd_put_8 (abfd, 0xff,
+ contents + irel->r_offset);
+ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ R_M68HC11_PCREL_8);
+ m68hc11_elf_relax_delete_bytes (abfd, sec,
+ irel->r_offset + 1, 1);
+ /* That will change things, so, we should relax again. */
+ *again = TRUE;
+ }
+ }
+ }
prev_insn_branch = 0;
prev_insn_group = 0;
}
- if (free_relocs != NULL)
- {
- free (free_relocs);
- free_relocs = NULL;
- }
+ free (free_relocs);
+ free_relocs = NULL;
if (free_contents != NULL)
{
return TRUE;
error_return:
- if (free_relocs != NULL)
- free (free_relocs);
- if (free_contents != NULL)
- free (free_contents);
- if (free_extsyms != NULL)
- free (free_extsyms);
+ free (free_relocs);
+ free (free_contents);
+ free (free_extsyms);
return FALSE;
}
static void
m68hc11_elf_relax_delete_bytes (bfd *abfd, asection *sec,
- bfd_vma addr, int count)
+ bfd_vma addr, int count)
{
Elf_Internal_Shdr *symtab_hdr;
unsigned int sec_shndx;
case we no longer care about it. Don't delete relocs which
represent addresses, though. */
if (ELF32_R_TYPE (irel->r_info) != R_M68HC11_RL_JUMP
- && irel->r_offset >= addr && irel->r_offset < addr + count)
- irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
- R_M68HC11_NONE);
+ && irel->r_offset >= addr && irel->r_offset < addr + count)
+ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ R_M68HC11_NONE);
if (ELF32_R_TYPE (irel->r_info) == R_M68HC11_NONE)
- continue;
+ continue;
/* Get the new reloc address. */
if ((irel->r_offset > addr
irel->r_offset -= count;
/* If this is a PC relative reloc, see if the range it covers
- includes the bytes we have deleted. */
+ includes the bytes we have deleted. */
switch (ELF32_R_TYPE (irel->r_info))
{
default:
break;
case R_M68HC11_RL_JUMP:
- code = bfd_get_8 (abfd, contents + irel->r_offset);
- switch (code)
- {
- /* jsr and jmp instruction are also marked with RL_JUMP
- relocs but no adjustment must be made. */
- case 0x7e:
- case 0x9d:
- case 0xbd:
- continue;
-
- case 0x12:
- case 0x13:
- branch_pos = 3;
- raddr = 4;
-
-
/* Special case when we translate a brclr N,y into brclr *<addr>
- In this case, the 0x18 page2 prefix is removed.
- The reloc offset is not modified but the instruction
- size is reduced by 1. */
- if (old_offset == addr)
- raddr++;
- break;
-
- case 0x1e:
- case 0x1f:
- branch_pos = 3;
- raddr = 4;
- break;
-
- case 0x18:
- branch_pos = 4;
- raddr = 5;
- break;
-
- default:
- branch_pos = 1;
- raddr = 2;
- break;
- }
- offset = bfd_get_8 (abfd, contents + irel->r_offset + branch_pos);
- raddr += old_offset;
- raddr += ((unsigned short) offset | ((offset & 0x80) ? 0xff00 : 0));
- if (irel->r_offset < addr && raddr > addr)
- {
- offset -= count;
- bfd_put_8 (abfd, offset, contents + irel->r_offset + branch_pos);
- }
- else if (irel->r_offset >= addr && raddr <= addr)
- {
- offset += count;
- bfd_put_8 (abfd, offset, contents + irel->r_offset + branch_pos);
- }
- else
- {
- /*printf ("Not adjusted 0x%04x [0x%4x 0x%4x]\n", raddr,
- irel->r_offset, addr);*/
- }
-
- break;
+ code = bfd_get_8 (abfd, contents + irel->r_offset);
+ switch (code)
+ {
+ /* jsr and jmp instruction are also marked with RL_JUMP
+ relocs but no adjustment must be made. */
+ case 0x7e:
+ case 0x9d:
+ case 0xbd:
+ continue;
+
+ case 0x12:
+ case 0x13:
+ branch_pos = 3;
+ raddr = 4;
+
+ /* Special case when we translate a brclr N,y into brclr *<addr>
+ In this case, the 0x18 page2 prefix is removed.
+ The reloc offset is not modified but the instruction
+ size is reduced by 1. */
+ if (old_offset == addr)
+ raddr++;
+ break;
+
+ case 0x1e:
+ case 0x1f:
+ branch_pos = 3;
+ raddr = 4;
+ break;
+
+ case 0x18:
+ branch_pos = 4;
+ raddr = 5;
+ break;
+
+ default:
+ branch_pos = 1;
+ raddr = 2;
+ break;
+ }
+ offset = bfd_get_8 (abfd, contents + irel->r_offset + branch_pos);
+ raddr += old_offset;
+ raddr += ((unsigned short) offset | ((offset & 0x80) ? 0xff00 : 0));
+ if (irel->r_offset < addr && raddr > addr)
+ {
+ offset -= count;
+ bfd_put_8 (abfd, offset, contents + irel->r_offset + branch_pos);
+ }
+ else if (irel->r_offset >= addr && raddr <= addr)
+ {
+ offset += count;
+ bfd_put_8 (abfd, offset, contents + irel->r_offset + branch_pos);
+ }
+ else
+ {
+ /*printf ("Not adjusted 0x%04x [0x%4x 0x%4x]\n", raddr,
+ irel->r_offset, addr);*/
+ }
+
+ break;
}
}
{ STRING_COMMA_LEN (".page0"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
{ STRING_COMMA_LEN (".softregs"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
{ STRING_COMMA_LEN (".vectors"), 0, SHT_PROGBITS, SHF_ALLOC },
- { NULL, 0, 0, 0, 0 }
+ { NULL, 0, 0, 0, 0 }
};
\f
#define ELF_ARCH bfd_arch_m68hc11
+#define ELF_TARGET_ID M68HC11_ELF_DATA
#define ELF_MACHINE_CODE EM_68HC11
#define ELF_MAXPAGESIZE 0x1000
-#define TARGET_BIG_SYM bfd_elf32_m68hc11_vec
+#define TARGET_BIG_SYM m68hc11_elf32_vec
#define TARGET_BIG_NAME "elf32-m68hc11"
-#define elf_info_to_howto 0
+#define elf_info_to_howto NULL
#define elf_info_to_howto_rel m68hc11_info_to_howto_rel
#define bfd_elf32_bfd_relax_section m68hc11_elf_relax_section
#define elf_backend_check_relocs elf32_m68hc11_check_relocs
#define elf_backend_relocate_section elf32_m68hc11_relocate_section
#define elf_backend_add_symbol_hook elf32_m68hc11_add_symbol_hook
#define elf_backend_object_p 0
-#define elf_backend_final_write_processing 0
#define elf_backend_can_gc_sections 1
#define elf_backend_special_sections elf32_m68hc11_special_sections
+#define elf_backend_merge_symbol_attribute elf32_m68hc11_merge_symbol_attribute
#define bfd_elf32_bfd_link_hash_table_create \
- m68hc11_elf_bfd_link_hash_table_create
-#define bfd_elf32_bfd_link_hash_table_free \
- m68hc11_elf_bfd_link_hash_table_free
+ m68hc11_elf_bfd_link_hash_table_create
#define bfd_elf32_bfd_merge_private_bfd_data \
_bfd_m68hc11_elf_merge_private_bfd_data
#define bfd_elf32_bfd_set_private_flags _bfd_m68hc11_elf_set_private_flags
projects / deliverable / binutils-gdb.git / blobdiff