mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-09 04:21:49 +08:00
ae115e5114
* Makefile.in (BFD32_BACKENDS): Remove coff-arm.o. * archures.c (bfd_arch_info_type): Change mach field from long to unsigned long. (bfd_lookup_arch): Change machine parameter from long to unsigned long.
1546 lines
44 KiB
C
1546 lines
44 KiB
C
/* BFD back-end for Hitachi Super-H COFF binaries.
|
|
Copyright 1993, 1994, 1995 Free Software Foundation, Inc.
|
|
Contributed by Cygnus Support.
|
|
Written by Steve Chamberlain, <sac@cygnus.com>.
|
|
|
|
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 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
|
|
|
|
#include "bfd.h"
|
|
#include "sysdep.h"
|
|
#include "obstack.h"
|
|
#include "libbfd.h"
|
|
#include "bfdlink.h"
|
|
#include "coff/sh.h"
|
|
#include "coff/internal.h"
|
|
#include "libcoff.h"
|
|
|
|
/* Internal functions. */
|
|
static bfd_reloc_status_type sh_reloc
|
|
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
|
static long get_symbol_value PARAMS ((asymbol *));
|
|
static boolean sh_relax_section
|
|
PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));
|
|
static boolean sh_relax_delete_bytes
|
|
PARAMS ((bfd *, asection *, bfd_vma, int));
|
|
static boolean sh_relocate_section
|
|
PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
|
|
struct internal_reloc *, struct internal_syment *, asection **));
|
|
static bfd_byte *sh_coff_get_relocated_section_contents
|
|
PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
|
|
bfd_byte *, boolean, asymbol **));
|
|
|
|
/* Default section alignment to 2**2. */
|
|
#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2)
|
|
|
|
/* Generate long file names. */
|
|
#define COFF_LONG_FILENAMES
|
|
|
|
/* The supported relocations. There are a lot of relocations defined
|
|
in coff/internal.h which we do not expect to ever see. */
|
|
static reloc_howto_type sh_coff_howtos[] =
|
|
{
|
|
{ 0 },
|
|
{ 1 },
|
|
{ 2 },
|
|
{ 3 }, /* R_SH_PCREL8 */
|
|
{ 4 }, /* R_SH_PCREL16 */
|
|
{ 5 }, /* R_SH_HIGH8 */
|
|
{ 6 }, /* R_SH_IMM24 */
|
|
{ 7 }, /* R_SH_LOW16 */
|
|
{ 8 },
|
|
{ 9 }, /* R_SH_PCDISP8BY4 */
|
|
|
|
HOWTO (R_SH_PCDISP8BY2, /* type */
|
|
1, /* rightshift */
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
|
8, /* bitsize */
|
|
true, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
sh_reloc, /* special_function */
|
|
"r_pcdisp8by2", /* name */
|
|
true, /* partial_inplace */
|
|
0xff, /* src_mask */
|
|
0xff, /* dst_mask */
|
|
true), /* pcrel_offset */
|
|
|
|
{ 11 }, /* R_SH_PCDISP8 */
|
|
|
|
HOWTO (R_SH_PCDISP, /* type */
|
|
1, /* rightshift */
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
|
12, /* bitsize */
|
|
true, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
sh_reloc, /* special_function */
|
|
"r_pcdisp12by2", /* name */
|
|
true, /* partial_inplace */
|
|
0xfff, /* src_mask */
|
|
0xfff, /* dst_mask */
|
|
true), /* pcrel_offset */
|
|
|
|
{ 13 },
|
|
|
|
HOWTO (R_SH_IMM32, /* type */
|
|
0, /* rightshift */
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
|
32, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
|
sh_reloc, /* special_function */
|
|
"r_imm32", /* name */
|
|
true, /* partial_inplace */
|
|
0xffffffff, /* src_mask */
|
|
0xffffffff, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
{ 15 },
|
|
{ 16 }, /* R_SH_IMM8 */
|
|
{ 17 }, /* R_SH_IMM8BY2 */
|
|
{ 18 }, /* R_SH_IMM8BY4 */
|
|
{ 19 }, /* R_SH_IMM4 */
|
|
{ 20 }, /* R_SH_IMM4BY2 */
|
|
{ 21 }, /* R_SH_IMM4BY4 */
|
|
|
|
HOWTO (R_SH_PCRELIMM8BY2, /* type */
|
|
1, /* rightshift */
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
|
8, /* bitsize */
|
|
true, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_unsigned, /* complain_on_overflow */
|
|
sh_reloc, /* special_function */
|
|
"r_pcrelimm8by2", /* name */
|
|
true, /* partial_inplace */
|
|
0xff, /* src_mask */
|
|
0xff, /* dst_mask */
|
|
true), /* pcrel_offset */
|
|
|
|
HOWTO (R_SH_PCRELIMM8BY4, /* type */
|
|
2, /* rightshift */
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
|
8, /* bitsize */
|
|
true, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_unsigned, /* complain_on_overflow */
|
|
sh_reloc, /* special_function */
|
|
"r_pcrelimm8by4", /* name */
|
|
true, /* partial_inplace */
|
|
0xff, /* src_mask */
|
|
0xff, /* dst_mask */
|
|
true), /* pcrel_offset */
|
|
|
|
HOWTO (R_SH_IMM16, /* type */
|
|
0, /* rightshift */
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
|
16, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
|
sh_reloc, /* special_function */
|
|
"r_imm16", /* name */
|
|
true, /* partial_inplace */
|
|
0xffff, /* src_mask */
|
|
0xffff, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
HOWTO (R_SH_SWITCH16, /* type */
|
|
0, /* rightshift */
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
|
16, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
|
sh_reloc, /* special_function */
|
|
"r_switch16", /* name */
|
|
true, /* partial_inplace */
|
|
0xffff, /* src_mask */
|
|
0xffff, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
HOWTO (R_SH_SWITCH32, /* type */
|
|
0, /* rightshift */
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
|
32, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
|
sh_reloc, /* special_function */
|
|
"r_switch32", /* name */
|
|
true, /* partial_inplace */
|
|
0xffffffff, /* src_mask */
|
|
0xffffffff, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
HOWTO (R_SH_USES, /* type */
|
|
0, /* rightshift */
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
|
16, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
|
sh_reloc, /* special_function */
|
|
"r_uses", /* name */
|
|
true, /* partial_inplace */
|
|
0xffff, /* src_mask */
|
|
0xffff, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
HOWTO (R_SH_COUNT, /* type */
|
|
0, /* rightshift */
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
|
32, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
|
sh_reloc, /* special_function */
|
|
"r_count", /* name */
|
|
true, /* partial_inplace */
|
|
0xffffffff, /* src_mask */
|
|
0xffffffff, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
|
|
HOWTO (R_SH_ALIGN, /* type */
|
|
0, /* rightshift */
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
|
32, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
|
sh_reloc, /* special_function */
|
|
"r_align", /* name */
|
|
true, /* partial_inplace */
|
|
0xffffffff, /* src_mask */
|
|
0xffffffff, /* dst_mask */
|
|
false) /* pcrel_offset */
|
|
};
|
|
|
|
#define SH_COFF_HOWTO_COUNT (sizeof sh_coff_howtos / sizeof sh_coff_howtos[0])
|
|
|
|
/* Check for a bad magic number. */
|
|
#define BADMAG(x) SHBADMAG(x)
|
|
|
|
/* Customize coffcode.h (this is not currently used). */
|
|
#define SH 1
|
|
|
|
/* FIXME: This should not be set here. */
|
|
#define __A_MAGIC_SET__
|
|
|
|
/* Swap the r_offset field in and out. */
|
|
#define SWAP_IN_RELOC_OFFSET bfd_h_get_32
|
|
#define SWAP_OUT_RELOC_OFFSET bfd_h_put_32
|
|
|
|
/* Swap out extra information in the reloc structure. */
|
|
#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
|
|
do \
|
|
{ \
|
|
dst->r_stuff[0] = 'S'; \
|
|
dst->r_stuff[1] = 'C'; \
|
|
} \
|
|
while (0)
|
|
|
|
/* Get the value of a symbol, when performing a relocation. */
|
|
|
|
static long
|
|
get_symbol_value (symbol)
|
|
asymbol *symbol;
|
|
{
|
|
bfd_vma relocation;
|
|
|
|
if (bfd_is_com_section (symbol->section))
|
|
relocation = 0;
|
|
else
|
|
relocation = (symbol->value +
|
|
symbol->section->output_section->vma +
|
|
symbol->section->output_offset);
|
|
|
|
return relocation;
|
|
}
|
|
|
|
/* This macro is used in coffcode.h to get the howto corresponding to
|
|
an internal reloc. */
|
|
|
|
#define RTYPE2HOWTO(relent, internal) \
|
|
((relent)->howto = \
|
|
((internal)->r_type < SH_COFF_HOWTO_COUNT \
|
|
? &sh_coff_howtos[(internal)->r_type] \
|
|
: (reloc_howto_type *) NULL))
|
|
|
|
/* This is the same as the macro in coffcode.h, except that it copies
|
|
r_offset into reloc_entry->addend for some relocs. */
|
|
#define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
|
|
{ \
|
|
coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
|
|
if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
|
|
coffsym = (obj_symbols (abfd) \
|
|
+ (cache_ptr->sym_ptr_ptr - symbols)); \
|
|
else if (ptr) \
|
|
coffsym = coff_symbol_from (abfd, ptr); \
|
|
if (coffsym != (coff_symbol_type *) NULL \
|
|
&& coffsym->native->u.syment.n_scnum == 0) \
|
|
cache_ptr->addend = 0; \
|
|
else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
|
|
&& ptr->section != (asection *) NULL) \
|
|
cache_ptr->addend = - (ptr->section->vma + ptr->value); \
|
|
else \
|
|
cache_ptr->addend = 0; \
|
|
if ((reloc).r_type == R_SH_SWITCH16 \
|
|
|| (reloc).r_type == R_SH_SWITCH32 \
|
|
|| (reloc).r_type == R_SH_USES \
|
|
|| (reloc).r_type == R_SH_COUNT \
|
|
|| (reloc).r_type == R_SH_ALIGN) \
|
|
cache_ptr->addend = (reloc).r_offset; \
|
|
}
|
|
|
|
/* This is the howto function for the SH relocations. */
|
|
|
|
static bfd_reloc_status_type
|
|
sh_reloc (abfd, reloc_entry, symbol_in, data, input_section, output_bfd,
|
|
error_message)
|
|
bfd *abfd;
|
|
arelent *reloc_entry;
|
|
asymbol *symbol_in;
|
|
PTR data;
|
|
asection *input_section;
|
|
bfd *output_bfd;
|
|
char **error_message;
|
|
{
|
|
unsigned long insn;
|
|
bfd_vma sym_value;
|
|
unsigned short r_type;
|
|
bfd_vma addr = reloc_entry->address;
|
|
bfd_byte *hit_data = addr + (bfd_byte *) data;
|
|
|
|
r_type = reloc_entry->howto->type;
|
|
|
|
if (output_bfd != NULL)
|
|
{
|
|
/* Partial linking--do nothing. */
|
|
reloc_entry->address += input_section->output_offset;
|
|
return bfd_reloc_ok;
|
|
}
|
|
|
|
/* Almost all relocs have to do with relaxing. If any work must be
|
|
done for them, it has been done in sh_relax_section. */
|
|
if (r_type != R_SH_IMM32
|
|
&& (r_type != R_SH_PCDISP
|
|
|| (symbol_in->flags & BSF_LOCAL) != 0))
|
|
return bfd_reloc_ok;
|
|
|
|
if (symbol_in != NULL
|
|
&& bfd_is_und_section (symbol_in->section))
|
|
return bfd_reloc_undefined;
|
|
|
|
sym_value = get_symbol_value (symbol_in);
|
|
|
|
switch (r_type)
|
|
{
|
|
case R_SH_IMM32:
|
|
insn = bfd_get_32 (abfd, hit_data);
|
|
insn += sym_value + reloc_entry->addend;
|
|
bfd_put_32 (abfd, insn, hit_data);
|
|
break;
|
|
case R_SH_PCDISP:
|
|
insn = bfd_get_16 (abfd, hit_data);
|
|
sym_value += reloc_entry->addend;
|
|
sym_value -= (input_section->output_section->vma
|
|
+ input_section->output_offset
|
|
+ addr
|
|
+ 4);
|
|
sym_value += (insn & 0xfff) << 1;
|
|
if (insn & 0x800)
|
|
sym_value -= 0x1000;
|
|
insn = (insn & 0xf000) | (sym_value & 0xfff);
|
|
bfd_put_16 (abfd, insn, hit_data);
|
|
if (sym_value < (bfd_vma) -0x1000 || sym_value >= 0x1000)
|
|
return bfd_reloc_overflow;
|
|
break;
|
|
default:
|
|
abort ();
|
|
break;
|
|
}
|
|
|
|
return bfd_reloc_ok;
|
|
}
|
|
|
|
/* We can do relaxing. */
|
|
#define coff_bfd_relax_section sh_relax_section
|
|
|
|
/* We use the special COFF backend linker. */
|
|
#define coff_relocate_section sh_relocate_section
|
|
|
|
/* When relaxing, we need to use special code to get the relocated
|
|
section contents. */
|
|
#define coff_bfd_get_relocated_section_contents \
|
|
sh_coff_get_relocated_section_contents
|
|
|
|
#include "coffcode.h"
|
|
|
|
/* This function handles relaxing on the SH.
|
|
|
|
Function calls on the SH look like this:
|
|
|
|
movl L1,r0
|
|
...
|
|
jsr @r0
|
|
...
|
|
L1:
|
|
.long function
|
|
|
|
The compiler and assembler will cooperate to create R_SH_USES
|
|
relocs on the jsr instructions. The r_offset field of the
|
|
R_SH_USES reloc is the PC relative offset to the instruction which
|
|
loads the register (the r_offset field is computed as though it
|
|
were a jump instruction, so the offset value is actually from four
|
|
bytes past the instruction). The linker can use this reloc to
|
|
determine just which function is being called, and thus decide
|
|
whether it is possible to replace the jsr with a bsr.
|
|
|
|
If multiple function calls are all based on a single register load
|
|
(i.e., the same function is called multiple times), the compiler
|
|
guarantees that each function call will have an R_SH_USES reloc.
|
|
Therefore, if the linker is able to convert each R_SH_USES reloc
|
|
which refers to that address, it can safely eliminate the register
|
|
load.
|
|
|
|
When the assembler creates an R_SH_USES reloc, it examines it to
|
|
determine which address is being loaded (L1 in the above example).
|
|
It then counts the number of references to that address, and
|
|
creates an R_SH_COUNT reloc at that address. The r_offset field of
|
|
the R_SH_COUNT reloc will be the number of references. If the
|
|
linker is able to eliminate a register load, it can use the
|
|
R_SH_COUNT reloc to see whether it can also eliminate the function
|
|
address. */
|
|
|
|
static boolean
|
|
sh_relax_section (abfd, sec, link_info, again)
|
|
bfd *abfd;
|
|
asection *sec;
|
|
struct bfd_link_info *link_info;
|
|
boolean *again;
|
|
{
|
|
struct internal_reloc *internal_relocs;
|
|
struct internal_reloc *free_relocs = NULL;
|
|
struct internal_reloc *irel, *irelend;
|
|
bfd_byte *contents = NULL;
|
|
bfd_byte *free_contents = NULL;
|
|
|
|
*again = false;
|
|
|
|
if (link_info->relocateable
|
|
|| (sec->flags & SEC_RELOC) == 0
|
|
|| sec->reloc_count == 0)
|
|
return true;
|
|
|
|
/* If this is the first time we have been called for this section,
|
|
initialize the cooked size. */
|
|
if (sec->_cooked_size == 0)
|
|
sec->_cooked_size = sec->_raw_size;
|
|
|
|
internal_relocs = (_bfd_coff_read_internal_relocs
|
|
(abfd, sec, link_info->keep_memory,
|
|
(bfd_byte *) NULL, false,
|
|
(struct internal_reloc *) NULL));
|
|
if (internal_relocs == NULL)
|
|
goto error_return;
|
|
if (! link_info->keep_memory)
|
|
free_relocs = internal_relocs;
|
|
|
|
irelend = internal_relocs + sec->reloc_count;
|
|
for (irel = internal_relocs; irel < irelend; irel++)
|
|
{
|
|
bfd_vma laddr, paddr, symval;
|
|
unsigned short insn;
|
|
struct internal_reloc *irelfn, *irelscan, *irelcount;
|
|
struct internal_syment sym;
|
|
bfd_signed_vma foff;
|
|
|
|
if (irel->r_type != R_SH_USES)
|
|
continue;
|
|
|
|
/* Get the section contents. */
|
|
if (contents == NULL)
|
|
{
|
|
if (coff_section_data (abfd, sec) != NULL
|
|
&& coff_section_data (abfd, sec)->contents != NULL)
|
|
contents = coff_section_data (abfd, sec)->contents;
|
|
else
|
|
{
|
|
contents = (bfd_byte *) malloc (sec->_raw_size);
|
|
if (contents == NULL)
|
|
{
|
|
bfd_set_error (bfd_error_no_memory);
|
|
goto error_return;
|
|
}
|
|
free_contents = contents;
|
|
|
|
if (! bfd_get_section_contents (abfd, sec, contents,
|
|
(file_ptr) 0, sec->_raw_size))
|
|
goto error_return;
|
|
}
|
|
}
|
|
|
|
/* The r_offset field of the R_SH_USES reloc will point us to
|
|
the register load. The 4 is because the r_offset field is
|
|
computed as though it were a jump offset, which are based
|
|
from 4 bytes after the jump instruction. */
|
|
laddr = irel->r_vaddr - sec->vma + 4 + irel->r_offset;
|
|
if (laddr >= sec->_raw_size)
|
|
{
|
|
(*_bfd_error_handler) ("%s: 0x%lx: warning: bad R_SH_USES offset",
|
|
bfd_get_filename (abfd),
|
|
(unsigned long) irel->r_vaddr);
|
|
continue;
|
|
}
|
|
insn = bfd_get_16 (abfd, contents + laddr);
|
|
|
|
/* If the instruction is not mov.l NN,rN, we don't know what to
|
|
do. */
|
|
if ((insn & 0xf000) != 0xd000)
|
|
{
|
|
((*_bfd_error_handler)
|
|
("%s: 0x%lx: warning: R_SH_USES points to unrecognized insn 0x%x",
|
|
bfd_get_filename (abfd), (unsigned long) irel->r_vaddr, insn));
|
|
continue;
|
|
}
|
|
|
|
/* Get the address from which the register is being loaded. The
|
|
displacement in the mov.l instruction is quadrupled. It is a
|
|
displacement from four bytes after the movl instruction, but,
|
|
before adding in the PC address, two least significant bits
|
|
of the PC are cleared. We assume that the section is aligned
|
|
on a four byte boundary. */
|
|
paddr = insn & 0xff;
|
|
paddr *= 4;
|
|
paddr += (laddr + 4) &~ 3;
|
|
if (paddr >= sec->_raw_size)
|
|
{
|
|
((*_bfd_error_handler)
|
|
("%s: 0x%lx: warning: bad R_SH_USES load offset",
|
|
bfd_get_filename (abfd), (unsigned long) irel->r_vaddr));
|
|
continue;
|
|
}
|
|
|
|
/* Get the reloc for the address from which the register is
|
|
being loaded. This reloc will tell us which function is
|
|
actually being called. */
|
|
paddr += sec->vma;
|
|
for (irelfn = internal_relocs; irelfn < irelend; irelfn++)
|
|
if (irelfn->r_vaddr == paddr
|
|
&& irelfn->r_type == R_SH_IMM32)
|
|
break;
|
|
if (irelfn >= irelend)
|
|
{
|
|
((*_bfd_error_handler)
|
|
("%s: 0x%lx: warning: could not find expected reloc",
|
|
bfd_get_filename (abfd), (unsigned long) paddr));
|
|
continue;
|
|
}
|
|
|
|
/* Get the value of the symbol referred to by the reloc. */
|
|
if (! _bfd_coff_get_external_symbols (abfd))
|
|
goto error_return;
|
|
bfd_coff_swap_sym_in (abfd,
|
|
((bfd_byte *) obj_coff_external_syms (abfd)
|
|
+ (irelfn->r_symndx
|
|
* bfd_coff_symesz (abfd))),
|
|
&sym);
|
|
if (sym.n_scnum != 0 && sym.n_scnum != sec->target_index)
|
|
{
|
|
((*_bfd_error_handler)
|
|
("%s: 0x%lx: warning: symbol in unexpected section",
|
|
bfd_get_filename (abfd), (unsigned long) paddr));
|
|
continue;
|
|
}
|
|
|
|
if (sym.n_sclass != C_EXT)
|
|
{
|
|
symval = (sym.n_value
|
|
- sec->vma
|
|
+ sec->output_section->vma
|
|
+ sec->output_offset);
|
|
}
|
|
else
|
|
{
|
|
struct coff_link_hash_entry *h;
|
|
|
|
h = obj_coff_sym_hashes (abfd)[irelfn->r_symndx];
|
|
BFD_ASSERT (h != NULL);
|
|
if (h->root.type != bfd_link_hash_defined
|
|
&& 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. */
|
|
continue;
|
|
}
|
|
|
|
symval = (h->root.u.def.value
|
|
+ h->root.u.def.section->output_section->vma
|
|
+ h->root.u.def.section->output_offset);
|
|
}
|
|
|
|
symval += bfd_get_32 (abfd, contents + paddr - sec->vma);
|
|
|
|
/* See if this function call can be shortened. */
|
|
foff = (symval
|
|
- (irel->r_vaddr
|
|
- sec->vma
|
|
+ sec->output_section->vma
|
|
+ sec->output_offset
|
|
+ 4));
|
|
if (foff < -0x1000 || foff >= 0x1000)
|
|
{
|
|
/* After all that work, we can't shorten this function call. */
|
|
continue;
|
|
}
|
|
|
|
/* Shorten the function call. */
|
|
|
|
/* For simplicity of coding, we are going to modify the section
|
|
contents, the section relocs, and the BFD symbol table. We
|
|
must tell the rest of the code not to free up this
|
|
information. It would be possible to instead create a table
|
|
of changes which have to be made, as is done in coff-mips.c;
|
|
that would be more work, but would require less memory when
|
|
the linker is run. */
|
|
|
|
if (coff_section_data (abfd, sec) == NULL)
|
|
{
|
|
sec->used_by_bfd =
|
|
((PTR) bfd_zalloc (abfd, sizeof (struct coff_section_tdata)));
|
|
if (sec->used_by_bfd == NULL)
|
|
{
|
|
bfd_set_error (bfd_error_no_memory);
|
|
goto error_return;
|
|
}
|
|
}
|
|
|
|
coff_section_data (abfd, sec)->relocs = internal_relocs;
|
|
coff_section_data (abfd, sec)->keep_relocs = true;
|
|
free_relocs = NULL;
|
|
|
|
coff_section_data (abfd, sec)->contents = contents;
|
|
coff_section_data (abfd, sec)->keep_contents = true;
|
|
free_contents = NULL;
|
|
|
|
obj_coff_keep_syms (abfd) = true;
|
|
|
|
/* Replace the jsr with a bsr. */
|
|
|
|
/* Change the R_SH_USES reloc into an R_SH_PCDISP reloc, and
|
|
replace the jsr with a bsr. */
|
|
irel->r_type = R_SH_PCDISP;
|
|
irel->r_symndx = irelfn->r_symndx;
|
|
if (sym.n_sclass != C_EXT)
|
|
{
|
|
/* If this needs to be changed because of future relaxing,
|
|
it will be handled here like other internal PCDISP
|
|
relocs. */
|
|
bfd_put_16 (abfd,
|
|
0xb000 | ((foff >> 1) & 0xfff),
|
|
contents + irel->r_vaddr - sec->vma);
|
|
}
|
|
else
|
|
{
|
|
/* We can't fully resolve this yet, because the external
|
|
symbol value may be changed by future relaxing. We let
|
|
the final link phase handle it. */
|
|
bfd_put_16 (abfd, 0xb000, contents + irel->r_vaddr - sec->vma);
|
|
}
|
|
|
|
/* See if there is another R_SH_USES reloc referring to the same
|
|
register load. */
|
|
for (irelscan = internal_relocs; irelscan < irelend; irelscan++)
|
|
if (irelscan->r_type == R_SH_USES
|
|
&& laddr == irelscan->r_vaddr - sec->vma + 4 + irelscan->r_offset)
|
|
break;
|
|
if (irelscan < irelend)
|
|
{
|
|
/* Some other function call depends upon this register load,
|
|
and we have not yet converted that function call.
|
|
Indeed, we may never be able to convert it. There is
|
|
nothing else we can do at this point. */
|
|
continue;
|
|
}
|
|
|
|
/* Look for a R_SH_COUNT reloc on the location where the
|
|
function address is stored. Do this before deleting any
|
|
bytes, to avoid confusion about the address. */
|
|
for (irelcount = internal_relocs; irelcount < irelend; irelcount++)
|
|
if (irelcount->r_vaddr == paddr
|
|
&& irelcount->r_type == R_SH_COUNT)
|
|
break;
|
|
|
|
/* Delete the register load. */
|
|
if (! sh_relax_delete_bytes (abfd, sec, laddr, 2))
|
|
goto error_return;
|
|
|
|
/* That will change things, so, just in case it permits some
|
|
other function call to come within range, we should relax
|
|
again. Note that this is not required, and it may be slow. */
|
|
*again = true;
|
|
|
|
/* Now check whether we got a COUNT reloc. */
|
|
if (irelcount >= irelend)
|
|
{
|
|
((*_bfd_error_handler)
|
|
("%s: 0x%lx: warning: could not find expected COUNT reloc",
|
|
bfd_get_filename (abfd), (unsigned long) paddr));
|
|
continue;
|
|
}
|
|
|
|
/* The number of uses is stored in the r_offset field. We've
|
|
just deleted one. */
|
|
if (irelcount->r_offset == 0)
|
|
{
|
|
((*_bfd_error_handler) ("%s: 0x%lx: warning: bad count",
|
|
bfd_get_filename (abfd),
|
|
(unsigned long) paddr));
|
|
continue;
|
|
}
|
|
|
|
--irelcount->r_offset;
|
|
|
|
/* If there are no more uses, we can delete the address. Reload
|
|
the address from irelfn, in case it was changed by the
|
|
previous call to sh_relax_delete_bytes. */
|
|
if (irelcount->r_offset == 0)
|
|
{
|
|
if (! sh_relax_delete_bytes (abfd, sec,
|
|
irelfn->r_vaddr - sec->vma, 4))
|
|
goto error_return;
|
|
}
|
|
|
|
/* We've done all we can with that function call. */
|
|
}
|
|
|
|
if (free_relocs != NULL)
|
|
{
|
|
free (free_relocs);
|
|
free_relocs = NULL;
|
|
}
|
|
|
|
if (free_contents != NULL)
|
|
{
|
|
if (! link_info->keep_memory)
|
|
free (free_contents);
|
|
else
|
|
{
|
|
/* Cache the section contents for coff_link_input_bfd. */
|
|
if (coff_section_data (abfd, sec) == NULL)
|
|
{
|
|
sec->used_by_bfd =
|
|
((PTR) bfd_zalloc (abfd, sizeof (struct coff_section_tdata)));
|
|
if (sec->used_by_bfd == NULL)
|
|
{
|
|
bfd_set_error (bfd_error_no_memory);
|
|
goto error_return;
|
|
}
|
|
coff_section_data (abfd, sec)->relocs = NULL;
|
|
}
|
|
coff_section_data (abfd, sec)->contents = contents;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
|
|
error_return:
|
|
if (free_relocs != NULL)
|
|
free (free_relocs);
|
|
if (free_contents != NULL)
|
|
free (free_contents);
|
|
return false;
|
|
}
|
|
|
|
/* Delete some bytes from a section while relaxing. */
|
|
|
|
static boolean
|
|
sh_relax_delete_bytes (abfd, sec, addr, count)
|
|
bfd *abfd;
|
|
asection *sec;
|
|
bfd_vma addr;
|
|
int count;
|
|
{
|
|
bfd_byte *contents;
|
|
struct internal_reloc *irel, *irelend;
|
|
struct internal_reloc *irelalign;
|
|
bfd_vma toaddr;
|
|
bfd_byte *esym, *esymend;
|
|
bfd_size_type symesz;
|
|
struct coff_link_hash_entry **sym_hash;
|
|
asection *o;
|
|
|
|
contents = coff_section_data (abfd, sec)->contents;
|
|
|
|
/* The deletion must stop at the next ALIGN reloc for an aligment
|
|
power larger than the number of bytes we are deleting. */
|
|
|
|
irelalign = NULL;
|
|
toaddr = sec->_cooked_size;
|
|
|
|
irel = coff_section_data (abfd, sec)->relocs;
|
|
irelend = irel + sec->reloc_count;
|
|
for (; irel < irelend; irel++)
|
|
{
|
|
if (irel->r_type == R_SH_ALIGN
|
|
&& irel->r_vaddr - sec->vma > addr
|
|
&& count < (1 << irel->r_offset))
|
|
{
|
|
irelalign = irel;
|
|
toaddr = irel->r_vaddr - sec->vma;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Actually delete the bytes. */
|
|
memmove (contents + addr, contents + addr + count, toaddr - addr - count);
|
|
if (irelalign == NULL)
|
|
sec->_cooked_size -= count;
|
|
else
|
|
memset (contents + toaddr - count, 0, count);
|
|
|
|
/* Adjust all the relocs. */
|
|
for (irel = coff_section_data (abfd, sec)->relocs; irel < irelend; irel++)
|
|
{
|
|
bfd_vma nraddr, start, stop;
|
|
int insn = 0;
|
|
struct internal_syment sym;
|
|
int off, adjust, oinsn;
|
|
bfd_signed_vma voff;
|
|
boolean overflow;
|
|
|
|
/* Get the new reloc address. */
|
|
nraddr = irel->r_vaddr - sec->vma;
|
|
if ((irel->r_vaddr - sec->vma > addr
|
|
&& irel->r_vaddr - sec->vma < toaddr)
|
|
|| (irel->r_type == R_SH_ALIGN
|
|
&& irel->r_vaddr - sec->vma == toaddr))
|
|
nraddr -= count;
|
|
|
|
/* See if this reloc was for the bytes we have deleted, in which
|
|
case we no longer care about it. */
|
|
if (irel->r_vaddr - sec->vma >= addr
|
|
&& irel->r_vaddr - sec->vma < addr + count
|
|
&& irel->r_type != R_SH_ALIGN)
|
|
irel->r_type = R_SH_UNUSED;
|
|
|
|
/* If this is a PC relative reloc, see if the range it covers
|
|
includes the bytes we have deleted. */
|
|
switch (irel->r_type)
|
|
{
|
|
default:
|
|
break;
|
|
|
|
case R_SH_PCDISP8BY2:
|
|
case R_SH_PCDISP:
|
|
case R_SH_PCRELIMM8BY2:
|
|
case R_SH_PCRELIMM8BY4:
|
|
start = irel->r_vaddr - sec->vma;
|
|
insn = bfd_get_16 (abfd, contents + nraddr);
|
|
break;
|
|
}
|
|
|
|
switch (irel->r_type)
|
|
{
|
|
default:
|
|
start = stop = addr;
|
|
break;
|
|
|
|
case R_SH_IMM32:
|
|
/* If this reloc is against a symbol defined in this
|
|
section, and the symbol will not be adjusted below, we
|
|
must check the addend to see it will put the value in
|
|
range to be adjusted, and hence must be changed. */
|
|
bfd_coff_swap_sym_in (abfd,
|
|
((bfd_byte *) obj_coff_external_syms (abfd)
|
|
+ (irel->r_symndx
|
|
* bfd_coff_symesz (abfd))),
|
|
&sym);
|
|
if (sym.n_sclass != C_EXT
|
|
&& sym.n_scnum == sec->target_index
|
|
&& ((bfd_vma) sym.n_value <= addr
|
|
|| (bfd_vma) sym.n_value >= toaddr))
|
|
{
|
|
bfd_vma val;
|
|
|
|
val = bfd_get_32 (abfd, contents + nraddr);
|
|
val += sym.n_value;
|
|
if (val >= addr && val < toaddr)
|
|
bfd_put_32 (abfd, val - count, contents + nraddr);
|
|
}
|
|
start = stop = addr;
|
|
break;
|
|
|
|
case R_SH_PCDISP8BY2:
|
|
off = insn & 0xff;
|
|
if (off & 0x80)
|
|
off -= 0x100;
|
|
stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2);
|
|
break;
|
|
|
|
case R_SH_PCDISP:
|
|
bfd_coff_swap_sym_in (abfd,
|
|
((bfd_byte *) obj_coff_external_syms (abfd)
|
|
+ (irel->r_symndx
|
|
* bfd_coff_symesz (abfd))),
|
|
&sym);
|
|
if (sym.n_sclass == C_EXT)
|
|
start = stop = addr;
|
|
else
|
|
{
|
|
off = insn & 0xfff;
|
|
if (off & 0x800)
|
|
off -= 0x1000;
|
|
stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2);
|
|
}
|
|
break;
|
|
|
|
case R_SH_PCRELIMM8BY2:
|
|
off = insn & 0xff;
|
|
stop = start + 4 + off * 2;
|
|
break;
|
|
|
|
case R_SH_PCRELIMM8BY4:
|
|
off = insn & 0xff;
|
|
stop = (start &~ (bfd_vma) 3) + 4 + off * 4;
|
|
break;
|
|
|
|
case R_SH_SWITCH16:
|
|
case R_SH_SWITCH32:
|
|
/* These relocs types represent
|
|
.word L2-L1
|
|
The r_offset field holds the difference between the reloc
|
|
address and L1. That is the start of the reloc, and
|
|
adding in the contents gives us the top. We must adjust
|
|
both the r_offset field and the section contents. */
|
|
|
|
start = irel->r_vaddr - sec->vma;
|
|
stop = (bfd_vma) ((bfd_signed_vma) start - (long) irel->r_offset);
|
|
|
|
if (start > addr
|
|
&& start < toaddr
|
|
&& (stop <= addr || stop >= toaddr))
|
|
irel->r_offset += count;
|
|
else if (stop > addr
|
|
&& stop < toaddr
|
|
&& (start <= addr || start >= toaddr))
|
|
irel->r_offset -= count;
|
|
|
|
start = stop;
|
|
|
|
if (irel->r_type == R_SH_SWITCH16)
|
|
voff = bfd_get_signed_16 (abfd, contents + nraddr);
|
|
else
|
|
voff = bfd_get_signed_32 (abfd, contents + nraddr);
|
|
stop = (bfd_vma) ((bfd_signed_vma) start + voff);
|
|
|
|
break;
|
|
|
|
case R_SH_USES:
|
|
start = irel->r_vaddr - sec->vma;
|
|
stop = (bfd_vma) ((bfd_signed_vma) start + (long) irel->r_offset);
|
|
break;
|
|
}
|
|
|
|
if (start > addr
|
|
&& start < toaddr
|
|
&& (stop <= addr || stop >= toaddr))
|
|
adjust = count;
|
|
else if (stop > addr
|
|
&& stop < toaddr
|
|
&& (start <= addr || start >= toaddr))
|
|
adjust = - count;
|
|
else
|
|
adjust = 0;
|
|
|
|
if (adjust != 0)
|
|
{
|
|
oinsn = insn;
|
|
overflow = false;
|
|
switch (irel->r_type)
|
|
{
|
|
default:
|
|
abort ();
|
|
break;
|
|
|
|
case R_SH_PCDISP8BY2:
|
|
case R_SH_PCRELIMM8BY2:
|
|
insn += adjust / 2;
|
|
if ((oinsn & 0xff00) != (insn & 0xff00))
|
|
overflow = true;
|
|
bfd_put_16 (abfd, insn, contents + nraddr);
|
|
break;
|
|
|
|
case R_SH_PCDISP:
|
|
insn += adjust / 2;
|
|
if ((oinsn & 0xf000) != (insn & 0xf000))
|
|
overflow = true;
|
|
bfd_put_16 (abfd, insn, contents + nraddr);
|
|
break;
|
|
|
|
case R_SH_PCRELIMM8BY4:
|
|
BFD_ASSERT (adjust == count || count >= 4);
|
|
if (count >= 4)
|
|
insn += adjust / 4;
|
|
else
|
|
{
|
|
if ((irel->r_vaddr & 3) == 0)
|
|
++insn;
|
|
}
|
|
if ((oinsn & 0xff00) != (insn & 0xff00))
|
|
overflow = true;
|
|
bfd_put_16 (abfd, insn, contents + nraddr);
|
|
break;
|
|
|
|
case R_SH_SWITCH16:
|
|
voff += adjust;
|
|
if (voff < - 0x8000 || voff >= 0x8000)
|
|
overflow = true;
|
|
bfd_put_signed_16 (abfd, voff, contents + nraddr);
|
|
break;
|
|
|
|
case R_SH_SWITCH32:
|
|
voff += adjust;
|
|
bfd_put_signed_32 (abfd, voff, contents + nraddr);
|
|
break;
|
|
|
|
case R_SH_USES:
|
|
irel->r_offset += adjust;
|
|
break;
|
|
}
|
|
|
|
if (overflow)
|
|
{
|
|
((*_bfd_error_handler)
|
|
("%s: 0x%lx: fatal: reloc overflow while relaxing",
|
|
bfd_get_filename (abfd), (unsigned long) irel->r_vaddr));
|
|
bfd_set_error (bfd_error_bad_value);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
irel->r_vaddr = nraddr + sec->vma;
|
|
}
|
|
|
|
/* Look through all the other sections. If there contain any IMM32
|
|
relocs against internal symbols which we are not going to adjust
|
|
below, we may need to adjust the addends. */
|
|
for (o = abfd->sections; o != NULL; o = o->next)
|
|
{
|
|
struct internal_reloc *internal_relocs;
|
|
struct internal_reloc *irelscan, *irelscanend;
|
|
bfd_byte *ocontents;
|
|
|
|
if (o == sec
|
|
|| (o->flags & SEC_RELOC) == 0
|
|
|| o->reloc_count == 0)
|
|
continue;
|
|
|
|
/* We always cache the relocs. Perhaps, if info->keep_memory is
|
|
false, we should free them, if we are permitted to, when we
|
|
leave sh_coff_relax_section. */
|
|
internal_relocs = (_bfd_coff_read_internal_relocs
|
|
(abfd, o, true, (bfd_byte *) NULL, false,
|
|
(struct internal_reloc *) NULL));
|
|
if (internal_relocs == NULL)
|
|
return false;
|
|
|
|
ocontents = NULL;
|
|
irelscanend = internal_relocs + o->reloc_count;
|
|
for (irelscan = internal_relocs; irelscan < irelscanend; irelscan++)
|
|
{
|
|
struct internal_syment sym;
|
|
|
|
if (irelscan->r_type != R_SH_IMM32)
|
|
continue;
|
|
|
|
bfd_coff_swap_sym_in (abfd,
|
|
((bfd_byte *) obj_coff_external_syms (abfd)
|
|
+ (irelscan->r_symndx
|
|
* bfd_coff_symesz (abfd))),
|
|
&sym);
|
|
if (sym.n_sclass != C_EXT
|
|
&& sym.n_scnum == sec->target_index
|
|
&& ((bfd_vma) sym.n_value <= addr
|
|
|| (bfd_vma) sym.n_value >= toaddr))
|
|
{
|
|
bfd_vma val;
|
|
|
|
if (ocontents == NULL)
|
|
{
|
|
if (coff_section_data (abfd, o)->contents != NULL)
|
|
ocontents = coff_section_data (abfd, o)->contents;
|
|
else
|
|
{
|
|
/* We always cache the section contents.
|
|
Perhaps, if info->keep_memory is false, we
|
|
should free them, if we are permitted to,
|
|
when we leave sh_coff_relax_section. */
|
|
ocontents = (bfd_byte *) malloc (o->_raw_size);
|
|
if (ocontents == NULL)
|
|
{
|
|
bfd_set_error (bfd_error_no_memory);
|
|
return false;
|
|
}
|
|
if (! bfd_get_section_contents (abfd, o, ocontents,
|
|
(file_ptr) 0,
|
|
o->_raw_size))
|
|
return false;
|
|
coff_section_data (abfd, o)->contents = ocontents;
|
|
}
|
|
}
|
|
|
|
val = bfd_get_32 (abfd, ocontents + irelscan->r_vaddr - o->vma);
|
|
val += sym.n_value;
|
|
if (val >= addr && val < toaddr)
|
|
bfd_put_32 (abfd, val - count,
|
|
ocontents + irelscan->r_vaddr - o->vma);
|
|
|
|
coff_section_data (abfd, o)->keep_contents = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Adjusting the internal symbols will not work if something has
|
|
already retrieved the generic symbols. It would be possible to
|
|
make this work by adjusting the generic symbols at the same time.
|
|
However, this case should not arise in normal usage. */
|
|
if (obj_symbols (abfd) != NULL
|
|
|| obj_raw_syments (abfd) != NULL)
|
|
{
|
|
((*_bfd_error_handler)
|
|
("%s: fatal: generic symbols retrieved before relaxing",
|
|
bfd_get_filename (abfd)));
|
|
bfd_set_error (bfd_error_invalid_operation);
|
|
return false;
|
|
}
|
|
|
|
/* Adjust all the symbols. */
|
|
sym_hash = obj_coff_sym_hashes (abfd);
|
|
symesz = bfd_coff_symesz (abfd);
|
|
esym = (bfd_byte *) obj_coff_external_syms (abfd);
|
|
esymend = esym + obj_raw_syment_count (abfd) * symesz;
|
|
while (esym < esymend)
|
|
{
|
|
struct internal_syment isym;
|
|
|
|
bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &isym);
|
|
|
|
if (isym.n_scnum == sec->target_index
|
|
&& (bfd_vma) isym.n_value > addr
|
|
&& (bfd_vma) isym.n_value < toaddr)
|
|
{
|
|
isym.n_value -= count;
|
|
|
|
bfd_coff_swap_sym_out (abfd, (PTR) &isym, (PTR) esym);
|
|
|
|
if (*sym_hash != NULL)
|
|
{
|
|
BFD_ASSERT ((*sym_hash)->root.type == bfd_link_hash_defined
|
|
|| (*sym_hash)->root.type == bfd_link_hash_defweak);
|
|
BFD_ASSERT ((*sym_hash)->root.u.def.value >= addr
|
|
&& (*sym_hash)->root.u.def.value < toaddr);
|
|
(*sym_hash)->root.u.def.value -= count;
|
|
}
|
|
}
|
|
|
|
esym += (isym.n_numaux + 1) * symesz;
|
|
sym_hash += isym.n_numaux + 1;
|
|
}
|
|
|
|
/* See if we can move the ALIGN reloc forward. We have adjusted
|
|
r_vaddr for it already. */
|
|
if (irelalign != NULL)
|
|
{
|
|
bfd_vma alignaddr;
|
|
|
|
alignaddr = BFD_ALIGN (irelalign->r_vaddr - sec->vma,
|
|
1 << irelalign->r_offset);
|
|
if (alignaddr != toaddr)
|
|
{
|
|
/* Tail recursion. */
|
|
return sh_relax_delete_bytes (abfd, sec,
|
|
irelalign->r_vaddr - sec->vma,
|
|
1 << irelalign->r_offset);
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/* This is a modification of _bfd_coff_generic_relocate_section, which
|
|
will handle SH relaxing. */
|
|
|
|
static boolean
|
|
sh_relocate_section (output_bfd, info, input_bfd, input_section, contents,
|
|
relocs, syms, sections)
|
|
bfd *output_bfd;
|
|
struct bfd_link_info *info;
|
|
bfd *input_bfd;
|
|
asection *input_section;
|
|
bfd_byte *contents;
|
|
struct internal_reloc *relocs;
|
|
struct internal_syment *syms;
|
|
asection **sections;
|
|
{
|
|
struct internal_reloc *rel;
|
|
struct internal_reloc *relend;
|
|
|
|
rel = relocs;
|
|
relend = rel + input_section->reloc_count;
|
|
for (; rel < relend; rel++)
|
|
{
|
|
long symndx;
|
|
struct coff_link_hash_entry *h;
|
|
struct internal_syment *sym;
|
|
bfd_vma addend;
|
|
bfd_vma val;
|
|
reloc_howto_type *howto;
|
|
bfd_reloc_status_type rstat;
|
|
|
|
/* Almost all relocs have to do with relaxing. If any work must
|
|
be done for them, it has been done in sh_relax_section. */
|
|
if (rel->r_type != R_SH_IMM32
|
|
&& rel->r_type != R_SH_PCDISP)
|
|
continue;
|
|
|
|
symndx = rel->r_symndx;
|
|
|
|
if (symndx == -1)
|
|
{
|
|
h = NULL;
|
|
sym = NULL;
|
|
}
|
|
else
|
|
{
|
|
h = obj_coff_sym_hashes (input_bfd)[symndx];
|
|
sym = syms + symndx;
|
|
}
|
|
|
|
if (sym != NULL && sym->n_scnum != 0)
|
|
addend = - sym->n_value;
|
|
else
|
|
addend = 0;
|
|
|
|
if (rel->r_type == R_SH_PCDISP)
|
|
addend -= 4;
|
|
|
|
if (rel->r_type >= SH_COFF_HOWTO_COUNT)
|
|
howto = NULL;
|
|
else
|
|
howto = &sh_coff_howtos[rel->r_type];
|
|
|
|
if (howto == NULL)
|
|
{
|
|
bfd_set_error (bfd_error_bad_value);
|
|
return false;
|
|
}
|
|
|
|
val = 0;
|
|
|
|
if (h == NULL)
|
|
{
|
|
asection *sec;
|
|
|
|
/* There is nothing to do for an internal PCDISP reloc. */
|
|
if (rel->r_type == R_SH_PCDISP)
|
|
continue;
|
|
|
|
if (symndx == -1)
|
|
{
|
|
sec = bfd_abs_section_ptr;
|
|
val = 0;
|
|
}
|
|
else
|
|
{
|
|
sec = sections[symndx];
|
|
val = (sec->output_section->vma
|
|
+ sec->output_offset
|
|
+ sym->n_value
|
|
- sec->vma);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (h->root.type == bfd_link_hash_defined
|
|
|| h->root.type == bfd_link_hash_defweak)
|
|
{
|
|
asection *sec;
|
|
|
|
sec = h->root.u.def.section;
|
|
val = (h->root.u.def.value
|
|
+ sec->output_section->vma
|
|
+ sec->output_offset);
|
|
}
|
|
else if (! info->relocateable)
|
|
{
|
|
if (! ((*info->callbacks->undefined_symbol)
|
|
(info, h->root.root.string, input_bfd, input_section,
|
|
rel->r_vaddr - input_section->vma)))
|
|
return false;
|
|
}
|
|
}
|
|
|
|
rstat = _bfd_final_link_relocate (howto, input_bfd, input_section,
|
|
contents,
|
|
rel->r_vaddr - input_section->vma,
|
|
val, addend);
|
|
|
|
switch (rstat)
|
|
{
|
|
default:
|
|
abort ();
|
|
case bfd_reloc_ok:
|
|
break;
|
|
case bfd_reloc_overflow:
|
|
{
|
|
const char *name;
|
|
char buf[SYMNMLEN + 1];
|
|
|
|
if (symndx == -1)
|
|
name = "*ABS*";
|
|
else if (h != NULL)
|
|
name = h->root.root.string;
|
|
else if (sym->_n._n_n._n_zeroes == 0
|
|
&& sym->_n._n_n._n_offset != 0)
|
|
name = obj_coff_strings (input_bfd) + sym->_n._n_n._n_offset;
|
|
else
|
|
{
|
|
strncpy (buf, sym->_n._n_name, SYMNMLEN);
|
|
buf[SYMNMLEN] = '\0';
|
|
name = buf;
|
|
}
|
|
|
|
if (! ((*info->callbacks->reloc_overflow)
|
|
(info, name, howto->name, (bfd_vma) 0, input_bfd,
|
|
input_section, rel->r_vaddr - input_section->vma)))
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/* This is a version of bfd_generic_get_relocated_section_contents
|
|
which uses sh_relocate_section. */
|
|
|
|
static bfd_byte *
|
|
sh_coff_get_relocated_section_contents (output_bfd, link_info, link_order,
|
|
data, relocateable, symbols)
|
|
bfd *output_bfd;
|
|
struct bfd_link_info *link_info;
|
|
struct bfd_link_order *link_order;
|
|
bfd_byte *data;
|
|
boolean relocateable;
|
|
asymbol **symbols;
|
|
{
|
|
asection *input_section = link_order->u.indirect.section;
|
|
bfd *input_bfd = input_section->owner;
|
|
asection **sections = NULL;
|
|
struct internal_reloc *internal_relocs = NULL;
|
|
struct internal_syment *internal_syms = NULL;
|
|
|
|
/* We only need to handle the case of relaxing, or of having a
|
|
particular set of section contents, specially. */
|
|
if (relocateable
|
|
|| coff_section_data (input_bfd, input_section) == NULL
|
|
|| coff_section_data (input_bfd, input_section)->contents == NULL)
|
|
return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
|
|
link_order, data,
|
|
relocateable,
|
|
symbols);
|
|
|
|
memcpy (data, coff_section_data (input_bfd, input_section)->contents,
|
|
input_section->_raw_size);
|
|
|
|
if ((input_section->flags & SEC_RELOC) != 0
|
|
&& input_section->reloc_count > 0)
|
|
{
|
|
bfd_size_type symesz = bfd_coff_symesz (input_bfd);
|
|
bfd_byte *esym, *esymend;
|
|
struct internal_syment *isymp;
|
|
asection **secpp;
|
|
|
|
if (! _bfd_coff_get_external_symbols (input_bfd))
|
|
goto error_return;
|
|
|
|
internal_relocs = (_bfd_coff_read_internal_relocs
|
|
(input_bfd, input_section, false, (bfd_byte *) NULL,
|
|
false, (struct internal_reloc *) NULL));
|
|
if (internal_relocs == NULL)
|
|
goto error_return;
|
|
|
|
internal_syms = ((struct internal_syment *)
|
|
malloc (obj_raw_syment_count (input_bfd)
|
|
* sizeof (struct internal_syment)));
|
|
if (internal_syms == NULL)
|
|
{
|
|
bfd_set_error (bfd_error_no_memory);
|
|
goto error_return;
|
|
}
|
|
|
|
sections = (asection **) malloc (obj_raw_syment_count (input_bfd)
|
|
* sizeof (asection *));
|
|
if (sections == NULL)
|
|
{
|
|
bfd_set_error (bfd_error_no_memory);
|
|
goto error_return;
|
|
}
|
|
|
|
isymp = internal_syms;
|
|
secpp = sections;
|
|
esym = (bfd_byte *) obj_coff_external_syms (input_bfd);
|
|
esymend = esym + obj_raw_syment_count (input_bfd) * symesz;
|
|
while (esym < esymend)
|
|
{
|
|
bfd_coff_swap_sym_in (input_bfd, (PTR) esym, (PTR) isymp);
|
|
|
|
if (isymp->n_scnum != 0)
|
|
*secpp = coff_section_from_bfd_index (input_bfd, isymp->n_scnum);
|
|
else
|
|
{
|
|
if (isymp->n_value == 0)
|
|
*secpp = bfd_und_section_ptr;
|
|
else
|
|
*secpp = bfd_com_section_ptr;
|
|
}
|
|
|
|
esym += (isymp->n_numaux + 1) * symesz;
|
|
secpp += isymp->n_numaux + 1;
|
|
isymp += isymp->n_numaux + 1;
|
|
}
|
|
|
|
if (! sh_relocate_section (output_bfd, link_info, input_bfd,
|
|
input_section, data, internal_relocs,
|
|
internal_syms, sections))
|
|
goto error_return;
|
|
|
|
free (sections);
|
|
sections = NULL;
|
|
free (internal_syms);
|
|
internal_syms = NULL;
|
|
free (internal_relocs);
|
|
internal_relocs = NULL;
|
|
}
|
|
|
|
return data;
|
|
|
|
error_return:
|
|
if (internal_relocs != NULL)
|
|
free (internal_relocs);
|
|
if (internal_syms != NULL)
|
|
free (internal_syms);
|
|
if (sections != NULL)
|
|
free (sections);
|
|
return NULL;
|
|
}
|
|
|
|
/* The target vectors. */
|
|
|
|
const bfd_target shcoff_vec =
|
|
{
|
|
"coff-sh", /* name */
|
|
bfd_target_coff_flavour,
|
|
true, /* data byte order is big */
|
|
true, /* header byte order is big */
|
|
|
|
(HAS_RELOC | EXEC_P | /* object flags */
|
|
HAS_LINENO | HAS_DEBUG |
|
|
HAS_SYMS | HAS_LOCALS | WP_TEXT | BFD_IS_RELAXABLE),
|
|
|
|
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC),
|
|
'_', /* leading symbol underscore */
|
|
'/', /* ar_pad_char */
|
|
15, /* ar_max_namelen */
|
|
2, /* minimum section alignment */
|
|
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
|
|
bfd_getb32, bfd_getb_signed_32, bfd_putb32,
|
|
bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
|
|
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
|
|
bfd_getb32, bfd_getb_signed_32, bfd_putb32,
|
|
bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
|
|
|
|
{_bfd_dummy_target, coff_object_p, /* bfd_check_format */
|
|
bfd_generic_archive_p, _bfd_dummy_target},
|
|
{bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
|
|
bfd_false},
|
|
{bfd_false, coff_write_object_contents, /* bfd_write_contents */
|
|
_bfd_write_archive_contents, bfd_false},
|
|
|
|
BFD_JUMP_TABLE_GENERIC (coff),
|
|
BFD_JUMP_TABLE_COPY (coff),
|
|
BFD_JUMP_TABLE_CORE (_bfd_nocore),
|
|
BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
|
|
BFD_JUMP_TABLE_SYMBOLS (coff),
|
|
BFD_JUMP_TABLE_RELOCS (coff),
|
|
BFD_JUMP_TABLE_WRITE (coff),
|
|
BFD_JUMP_TABLE_LINK (coff),
|
|
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
|
|
|
|
COFF_SWAP_TABLE,
|
|
};
|
|
|
|
const bfd_target shlcoff_vec =
|
|
{
|
|
"coff-shl", /* name */
|
|
bfd_target_coff_flavour,
|
|
false, /* data byte order is little */
|
|
false, /* header byte order is little endian too*/
|
|
|
|
(HAS_RELOC | EXEC_P | /* object flags */
|
|
HAS_LINENO | HAS_DEBUG |
|
|
HAS_SYMS | HAS_LOCALS | WP_TEXT | BFD_IS_RELAXABLE),
|
|
|
|
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC),
|
|
'_', /* leading symbol underscore */
|
|
'/', /* ar_pad_char */
|
|
15, /* ar_max_namelen */
|
|
2, /* minimum section alignment */
|
|
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
|
|
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
|
|
bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
|
|
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
|
|
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
|
|
bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
|
|
|
|
/* Note that we use a special archive recognizer.
|
|
This is so that we only use one archive format for both
|
|
object file types */
|
|
{_bfd_dummy_target, coff_object_p, /* bfd_check_format */
|
|
_bfd_dummy_target, _bfd_dummy_target},
|
|
{bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
|
|
bfd_false},
|
|
{bfd_false, coff_write_object_contents, /* bfd_write_contents */
|
|
_bfd_write_archive_contents, bfd_false},
|
|
|
|
BFD_JUMP_TABLE_GENERIC (coff),
|
|
BFD_JUMP_TABLE_COPY (coff),
|
|
BFD_JUMP_TABLE_CORE (_bfd_nocore),
|
|
BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
|
|
BFD_JUMP_TABLE_SYMBOLS (coff),
|
|
BFD_JUMP_TABLE_RELOCS (coff),
|
|
BFD_JUMP_TABLE_WRITE (coff),
|
|
BFD_JUMP_TABLE_LINK (coff),
|
|
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
|
|
|
|
COFF_SWAP_TABLE,
|
|
};
|