mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-23 17:23:29 +08:00
c877bdf1a5
* cpu-ns32k.h: Include ns32k.h. Rename externally visible functions to start with _bfd_. * aout-ns32k.c: Include ns32k.h. Change references to renamed functions in cpu-ns32k.h. * Makefile.in: Rebuild dependencies. (HFILES): Add ns32k.h.
369 lines
12 KiB
C
369 lines
12 KiB
C
/* BFD back-end for ns32k a.out-ish binaries.
|
|
Copyright (C) 1990, 1991, 1992, 1994, 1995 Free Software Foundation, Inc.
|
|
Contributed by Ian Dall (idall@eleceng.adelaide.edu.au).
|
|
|
|
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. */
|
|
|
|
#define BYTES_IN_WORD 4
|
|
|
|
#include "bfd.h"
|
|
#include "aout/aout64.h"
|
|
#include "ns32k.h"
|
|
|
|
#define MYNS(OP) CAT(ns32kaout_,OP)
|
|
reloc_howto_type *
|
|
MYNS(bfd_reloc_type_lookup)
|
|
PARAMS((bfd *abfd AND
|
|
bfd_reloc_code_real_type code));
|
|
|
|
boolean
|
|
MYNS(write_object_contents)
|
|
PARAMS((bfd *abfd));
|
|
|
|
/* Avoid multiple definitions from aoutx if supporting standard a.out format(s)
|
|
* as well as this one
|
|
*/
|
|
#define NAME(x,y) CAT3(ns32kaout,_32_,y)
|
|
|
|
void bfd_ns32k_arch PARAMS ((void));
|
|
|
|
#include "libaout.h"
|
|
|
|
#define MY(OP) MYNS(OP)
|
|
|
|
#define MY_swap_std_reloc_in MY(swap_std_reloc_in)
|
|
#define MY_swap_std_reloc_out MY(swap_std_reloc_out)
|
|
|
|
static void
|
|
MY_swap_std_reloc_in PARAMS ((bfd *abfd, struct reloc_std_external *bytes,
|
|
arelent *cache_ptr, asymbol **symbols,
|
|
bfd_size_type symcount));
|
|
|
|
static void
|
|
MY_swap_std_reloc_out PARAMS ((bfd *abfd, arelent *g,
|
|
struct reloc_std_external *natptr));
|
|
|
|
/* The ns32k series is ah, unusual, when it comes to relocation.
|
|
* There are three storage methods for relocateable objects. There
|
|
* are displacements, immediate operands and ordinary twos complement
|
|
* data. Of these, only the last fits into the standard relocation
|
|
* scheme. Immediate operands are stored huffman encoded and
|
|
* immediate operands are stored big endian (where as the natural byte
|
|
* order is little endian for this achitecture).
|
|
|
|
* Note that the ns32k displacement storage method is orthogonal to
|
|
* whether the relocation is pc relative or not. The "displacement"
|
|
* storage scheme is used for essentially all address constants. The
|
|
* displacement can be relative to zero (absolute displacement),
|
|
* relative to the pc (pc relative), the stack pointer, the frame
|
|
* pointer, the static base register and general purpose register etc.
|
|
|
|
* For example:
|
|
*
|
|
* sym1: .long . # pc relative 2's complement
|
|
* sym1: .long foo # 2's complement not pc relative
|
|
*
|
|
* self: movd @self, r0 # pc relative displacement
|
|
* movd foo, r0 # non pc relative displacement
|
|
*
|
|
* self: movd self, r0 # pc relative immediate
|
|
* movd foo, r0 # non pc relative immediate
|
|
*
|
|
* In addition, for historical reasons the encoding of the relocation types
|
|
* in the a.out format relocation entries is such that even the relocation
|
|
* methods which are standard are not encoded the standard way.
|
|
*
|
|
*/
|
|
|
|
reloc_howto_type MY(howto_table)[] =
|
|
{
|
|
/* ns32k immediate operands */
|
|
HOWTO (BFD_RELOC_NS32K_IMM_8, 0, 0, 8, false, 0, true,
|
|
_bfd_ns32k_reloc_imm, "NS32K_IMM_8",
|
|
true, 0x000000ff,0x000000ff, false),
|
|
HOWTO (BFD_RELOC_NS32K_IMM_16, 0, 1, 16, false, 0, true,
|
|
_bfd_ns32k_reloc_imm, "NS32K_IMM_16",
|
|
true, 0x0000ffff,0x0000ffff, false),
|
|
HOWTO (BFD_RELOC_NS32K_IMM_32, 0, 2, 32, false, 0, true,
|
|
_bfd_ns32k_reloc_imm, "NS32K_IMM_32",
|
|
true, 0xffffffff,0xffffffff, false),
|
|
HOWTO (BFD_RELOC_NS32K_IMM_8_PCREL, 0, 0, 8, true, 0, false,
|
|
_bfd_ns32k_reloc_imm, "PCREL_NS32K_IMM_8",
|
|
true, 0x000000ff, 0x000000ff, false),
|
|
HOWTO (BFD_RELOC_NS32K_IMM_16_PCREL, 0, 1, 16, true, 0, false,
|
|
_bfd_ns32k_reloc_imm, "PCREL_NS32K_IMM_16",
|
|
true, 0x0000ffff,0x0000ffff, false),
|
|
HOWTO (BFD_RELOC_NS32K_IMM_32_PCREL, 0, 2, 32, true, 0, false,
|
|
_bfd_ns32k_reloc_imm, "PCREL_NS32K_IMM_32",
|
|
true, 0xffffffff,0xffffffff, false),
|
|
|
|
/* ns32k displacements */
|
|
HOWTO (BFD_RELOC_NS32K_DISP_8, 0, 0, 8, false, 0, true,
|
|
_bfd_ns32k_reloc_disp, "NS32K_DISP_8",
|
|
true, 0x000000ff,0x000000ff, false),
|
|
HOWTO (BFD_RELOC_NS32K_DISP_16, 0, 1, 16, false, 0, true,
|
|
_bfd_ns32k_reloc_disp, "NS32K_DISP_16",
|
|
true, 0x0000ffff, 0x0000ffff, false),
|
|
HOWTO (BFD_RELOC_NS32K_DISP_32, 0, 2, 32, false, 0, true,
|
|
_bfd_ns32k_reloc_disp, "NS32K_DISP_32",
|
|
true, 0xffffffff, 0xffffffff, false),
|
|
HOWTO (BFD_RELOC_NS32K_DISP_8_PCREL, 0, 0, 8, true, 0, false,
|
|
_bfd_ns32k_reloc_disp, "PCREL_NS32K_DISP_8",
|
|
true, 0x000000ff,0x000000ff, false),
|
|
HOWTO (BFD_RELOC_NS32K_DISP_16_PCREL, 0, 1, 16, true, 0, false,
|
|
_bfd_ns32k_reloc_disp, "PCREL_NS32K_DISP_16",
|
|
true, 0x0000ffff,0x0000ffff, false),
|
|
HOWTO (BFD_RELOC_NS32K_DISP_32_PCREL, 0, 2, 32, true, 0, false,
|
|
_bfd_ns32k_reloc_disp, "PCREL_NS32K_DISP_32",
|
|
true, 0xffffffff,0xffffffff, false),
|
|
|
|
/* Normal 2's complement */
|
|
HOWTO (BFD_RELOC_8, 0, 0, 8, false, 0, complain_overflow_bitfield,0,
|
|
"8", true, 0x000000ff,0x000000ff, false),
|
|
HOWTO (BFD_RELOC_16, 0, 1, 16, false, 0, complain_overflow_bitfield,0,
|
|
"16", true, 0x0000ffff,0x0000ffff, false),
|
|
HOWTO (BFD_RELOC_32, 0, 2, 32, false, 0, complain_overflow_bitfield,0,
|
|
"32", true, 0xffffffff,0xffffffff, false),
|
|
HOWTO (BFD_RELOC_8_PCREL, 0, 0, 8, true, 0, complain_overflow_signed, 0,
|
|
"PCREL_8", true, 0x000000ff,0x000000ff, false),
|
|
HOWTO (BFD_RELOC_16_PCREL, 0, 1, 16, true, 0, complain_overflow_signed, 0,
|
|
"PCREL_16", true, 0x0000ffff,0x0000ffff, false),
|
|
HOWTO (BFD_RELOC_32_PCREL, 0, 2, 32, true, 0, complain_overflow_signed, 0,
|
|
"PCREL_32", true, 0xffffffff,0xffffffff, false),
|
|
};
|
|
|
|
|
|
#define CTOR_TABLE_RELOC_HOWTO(BFD) (MY(howto_table) + 14)
|
|
|
|
#define RELOC_STD_BITS_NS32K_TYPE_BIG 0x06
|
|
#define RELOC_STD_BITS_NS32K_TYPE_LITTLE 0x60
|
|
#define RELOC_STD_BITS_NS32K_TYPE_SH_BIG 1
|
|
#define RELOC_STD_BITS_NS32K_TYPE_SH_LITTLE 5
|
|
|
|
reloc_howto_type *
|
|
MY(reloc_howto)(abfd, rel, r_index, r_extern, r_pcrel)
|
|
bfd *abfd;
|
|
struct reloc_std_external *rel;
|
|
int *r_index;
|
|
int *r_extern;
|
|
int *r_pcrel;
|
|
{
|
|
unsigned int r_length;
|
|
int r_ns32k_type;
|
|
/* BFD_ASSERT(bfd_header_little_endian (abfd)); */
|
|
*r_index = ((rel->r_index[2] << 16)
|
|
| (rel->r_index[1] << 8)
|
|
| rel->r_index[0] );
|
|
*r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
|
|
*r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
|
|
r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
|
|
>> RELOC_STD_BITS_LENGTH_SH_LITTLE);
|
|
r_ns32k_type = ((rel->r_type[0] & RELOC_STD_BITS_NS32K_TYPE_LITTLE)
|
|
>> RELOC_STD_BITS_NS32K_TYPE_SH_LITTLE);
|
|
return (MY(howto_table) + r_length + 3 * (*r_pcrel) + 6 * r_ns32k_type);
|
|
}
|
|
|
|
#define MY_reloc_howto(BFD,REL,IN,EX,PC) MY(reloc_howto)(BFD, REL, &IN, &EX, &PC)
|
|
|
|
void
|
|
MY(put_reloc)(abfd, r_extern, r_index, value, howto, reloc)
|
|
bfd *abfd;
|
|
int r_extern;
|
|
int r_index;
|
|
long value;
|
|
reloc_howto_type *howto;
|
|
struct reloc_std_external *reloc;
|
|
{
|
|
unsigned int r_length;
|
|
int r_pcrel;
|
|
int r_ns32k_type;
|
|
PUT_WORD (abfd, value, reloc->r_address);
|
|
r_length = howto->size ; /* Size as a power of two */
|
|
r_pcrel = (int) howto->pc_relative; /* Relative to PC? */
|
|
r_ns32k_type = (howto - MY(howto_table) )/6;
|
|
/* BFD_ASSERT (bfd_header_little_endian (abfd)); */
|
|
reloc->r_index[2] = r_index >> 16;
|
|
reloc->r_index[1] = r_index >> 8;
|
|
reloc->r_index[0] = r_index;
|
|
reloc->r_type[0] =
|
|
(r_extern? RELOC_STD_BITS_EXTERN_LITTLE: 0)
|
|
| (r_pcrel? RELOC_STD_BITS_PCREL_LITTLE: 0)
|
|
| (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)
|
|
| (r_ns32k_type << RELOC_STD_BITS_NS32K_TYPE_SH_LITTLE);
|
|
}
|
|
|
|
#define MY_put_reloc(BFD, EXT, IDX, VAL, HOWTO, RELOC) \
|
|
MY(put_reloc)(BFD, EXT, IDX, VAL, HOWTO, RELOC)
|
|
|
|
#define STAT_FOR_EXEC
|
|
|
|
#define MY_final_link_relocate _bfd_ns32k_final_link_relocate
|
|
#define MY_relocate_contents _bfd_ns32k_relocate_contents
|
|
|
|
#include <aoutx.h>
|
|
|
|
reloc_howto_type *
|
|
MY(bfd_reloc_type_lookup)(abfd,code)
|
|
bfd *abfd;
|
|
bfd_reloc_code_real_type code;
|
|
{
|
|
|
|
#define ENTRY(i,j) case i: return &MY(howto_table)[j]
|
|
|
|
int ext = obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE;
|
|
|
|
BFD_ASSERT(ext == 0);
|
|
if (code == BFD_RELOC_CTOR)
|
|
switch (bfd_get_arch_info (abfd)->bits_per_address)
|
|
{
|
|
case 32:
|
|
code = BFD_RELOC_32;
|
|
break;
|
|
}
|
|
switch (code)
|
|
{
|
|
ENTRY(BFD_RELOC_NS32K_IMM_8, 0);
|
|
ENTRY(BFD_RELOC_NS32K_IMM_16, 1);
|
|
ENTRY(BFD_RELOC_NS32K_IMM_32, 2);
|
|
ENTRY(BFD_RELOC_NS32K_IMM_8_PCREL, 3);
|
|
ENTRY(BFD_RELOC_NS32K_IMM_16_PCREL, 4);
|
|
ENTRY(BFD_RELOC_NS32K_IMM_32_PCREL, 5);
|
|
ENTRY(BFD_RELOC_NS32K_DISP_8, 6);
|
|
ENTRY(BFD_RELOC_NS32K_DISP_16, 7);
|
|
ENTRY(BFD_RELOC_NS32K_DISP_32, 8);
|
|
ENTRY(BFD_RELOC_NS32K_DISP_8_PCREL, 9);
|
|
ENTRY(BFD_RELOC_NS32K_DISP_16_PCREL, 10);
|
|
ENTRY(BFD_RELOC_NS32K_DISP_32_PCREL, 11);
|
|
ENTRY(BFD_RELOC_8, 12);
|
|
ENTRY(BFD_RELOC_16, 13);
|
|
ENTRY(BFD_RELOC_32, 14);
|
|
ENTRY(BFD_RELOC_8_PCREL, 15);
|
|
ENTRY(BFD_RELOC_16_PCREL, 16);
|
|
ENTRY(BFD_RELOC_32_PCREL, 17);
|
|
default: return (reloc_howto_type *) NULL;
|
|
}
|
|
#undef ENTRY
|
|
}
|
|
|
|
|
|
static void
|
|
MY_swap_std_reloc_in (abfd, bytes, cache_ptr, symbols, symcount)
|
|
bfd *abfd;
|
|
struct reloc_std_external *bytes;
|
|
arelent *cache_ptr;
|
|
asymbol **symbols;
|
|
bfd_size_type symcount;
|
|
{
|
|
int r_index;
|
|
int r_extern;
|
|
int r_pcrel;
|
|
struct aoutdata *su = &(abfd->tdata.aout_data->a);
|
|
|
|
cache_ptr->address = bfd_h_get_32 (abfd, bytes->r_address);
|
|
|
|
/* now the fun stuff */
|
|
|
|
cache_ptr->howto = MY_reloc_howto(abfd, bytes, r_index, r_extern, r_pcrel);
|
|
|
|
MOVE_ADDRESS(0);
|
|
}
|
|
|
|
static void
|
|
MY_swap_std_reloc_out (abfd, g, natptr)
|
|
bfd *abfd;
|
|
arelent *g;
|
|
struct reloc_std_external *natptr;
|
|
{
|
|
int r_index;
|
|
asymbol *sym = *(g->sym_ptr_ptr);
|
|
int r_extern;
|
|
unsigned int r_addend;
|
|
asection *output_section = sym->section->output_section;
|
|
|
|
r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma;
|
|
|
|
/* name was clobbered by aout_write_syms to be symbol index */
|
|
|
|
/* If this relocation is relative to a symbol then set the
|
|
r_index to the symbols index, and the r_extern bit.
|
|
|
|
Absolute symbols can come in in two ways, either as an offset
|
|
from the abs section, or as a symbol which has an abs value.
|
|
Check for that here. */
|
|
|
|
if (bfd_is_com_section (output_section)
|
|
|| output_section == &bfd_abs_section
|
|
|| output_section == &bfd_und_section)
|
|
{
|
|
if (bfd_abs_section.symbol == sym)
|
|
{
|
|
/* Whoops, looked like an abs symbol, but is really an offset
|
|
from the abs section */
|
|
r_index = 0;
|
|
r_extern = 0;
|
|
}
|
|
else
|
|
{
|
|
/* Fill in symbol */
|
|
r_extern = 1;
|
|
#undef KEEPIT
|
|
#define KEEPIT udata.i
|
|
r_index = (*(g->sym_ptr_ptr))->KEEPIT;
|
|
#undef KEEPIT
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Just an ordinary section */
|
|
r_extern = 0;
|
|
r_index = output_section->target_index;
|
|
}
|
|
|
|
MY_put_reloc (abfd, r_extern, r_index, g->address, g->howto, natptr);
|
|
}
|
|
|
|
bfd_reloc_status_type
|
|
_bfd_ns32k_relocate_contents (howto, input_bfd, relocation, location)
|
|
reloc_howto_type *howto;
|
|
bfd *input_bfd;
|
|
bfd_vma relocation;
|
|
bfd_byte *location;
|
|
{
|
|
int r_ns32k_type = (howto - MY(howto_table)) / 6;
|
|
long (*get_data)();
|
|
int (*put_data)();
|
|
|
|
switch (r_ns32k_type)
|
|
{
|
|
case 0:
|
|
get_data = _bfd_ns32k_get_immediate;
|
|
put_data = _bfd_ns32k_put_immediate;
|
|
break;
|
|
case 1:
|
|
get_data = _bfd_ns32k_get_displacement;
|
|
put_data = _bfd_ns32k_put_displacement;
|
|
break;
|
|
case 2:
|
|
return _bfd_relocate_contents (howto, input_bfd, relocation,
|
|
location);
|
|
/* NOT REACHED */
|
|
break;
|
|
}
|
|
return _bfd_do_ns32k_reloc_contents (howto, input_bfd, relocation,
|
|
location, get_data, put_data);
|
|
}
|