mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-27 04:52:05 +08:00
f5c5b7c124
bfd/ * bfd-in.h: Move m68k function declaration.. * cpu-m68k.h: ..to here, new file.. * elf32-m68k.h: ..and here, new file. * elf32-m68k.c: Include cpu-m68k.h and elf32-m68k.h. * bfd-in2.h: Regenerate. ld/ * emultempl/m68kelf.em: Include elf32-m68k.h. opcodes/ * m68k-dis.c: Include cpu-m68k.h
275 lines
9.2 KiB
C
275 lines
9.2 KiB
C
/* BFD library support routines for architectures.
|
|
Copyright (C) 1990-2019 Free Software Foundation, Inc.
|
|
Hacked by Steve Chamberlain of Cygnus Support.
|
|
|
|
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 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.
|
|
|
|
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 "sysdep.h"
|
|
#include "bfd.h"
|
|
#include "libbfd.h"
|
|
#include "opcode/m68k.h"
|
|
#include "cpu-m68k.h"
|
|
|
|
static const bfd_arch_info_type *
|
|
bfd_m68k_compatible (const bfd_arch_info_type *a,
|
|
const bfd_arch_info_type *b);
|
|
|
|
#define N(name, print,d,next) \
|
|
{ 32, 32, 8, bfd_arch_m68k, name, "m68k",print,2,d,bfd_m68k_compatible, \
|
|
bfd_default_scan, bfd_arch_default_fill, next, 0 }
|
|
|
|
static const bfd_arch_info_type arch_info_struct[] =
|
|
{
|
|
N(bfd_mach_m68000, "m68k:68000", FALSE, &arch_info_struct[1]),
|
|
N(bfd_mach_m68008, "m68k:68008", FALSE, &arch_info_struct[2]),
|
|
N(bfd_mach_m68010, "m68k:68010", FALSE, &arch_info_struct[3]),
|
|
N(bfd_mach_m68020, "m68k:68020", FALSE, &arch_info_struct[4]),
|
|
N(bfd_mach_m68030, "m68k:68030", FALSE, &arch_info_struct[5]),
|
|
N(bfd_mach_m68040, "m68k:68040", FALSE, &arch_info_struct[6]),
|
|
N(bfd_mach_m68060, "m68k:68060", FALSE, &arch_info_struct[7]),
|
|
N(bfd_mach_cpu32, "m68k:cpu32", FALSE, &arch_info_struct[8]),
|
|
N(bfd_mach_fido, "m68k:fido", FALSE, &arch_info_struct[9]),
|
|
|
|
/* Various combinations of CF architecture features */
|
|
N(bfd_mach_mcf_isa_a_nodiv, "m68k:isa-a:nodiv",
|
|
FALSE, &arch_info_struct[10]),
|
|
N(bfd_mach_mcf_isa_a, "m68k:isa-a",
|
|
FALSE, &arch_info_struct[11]),
|
|
N(bfd_mach_mcf_isa_a_mac, "m68k:isa-a:mac",
|
|
FALSE, &arch_info_struct[12]),
|
|
N(bfd_mach_mcf_isa_a_emac, "m68k:isa-a:emac",
|
|
FALSE, &arch_info_struct[13]),
|
|
N(bfd_mach_mcf_isa_aplus, "m68k:isa-aplus",
|
|
FALSE, &arch_info_struct[14]),
|
|
N(bfd_mach_mcf_isa_aplus_mac, "m68k:isa-aplus:mac",
|
|
FALSE, &arch_info_struct[15]),
|
|
N(bfd_mach_mcf_isa_aplus_emac, "m68k:isa-aplus:emac",
|
|
FALSE, &arch_info_struct[16]),
|
|
N(bfd_mach_mcf_isa_b_nousp, "m68k:isa-b:nousp",
|
|
FALSE, &arch_info_struct[17]),
|
|
N(bfd_mach_mcf_isa_b_nousp_mac, "m68k:isa-b:nousp:mac",
|
|
FALSE, &arch_info_struct[18]),
|
|
N(bfd_mach_mcf_isa_b_nousp_emac, "m68k:isa-b:nousp:emac",
|
|
FALSE, &arch_info_struct[19]),
|
|
N(bfd_mach_mcf_isa_b, "m68k:isa-b",
|
|
FALSE, &arch_info_struct[20]),
|
|
N(bfd_mach_mcf_isa_b_mac, "m68k:isa-b:mac",
|
|
FALSE, &arch_info_struct[21]),
|
|
N(bfd_mach_mcf_isa_b_emac, "m68k:isa-b:emac",
|
|
FALSE, &arch_info_struct[22]),
|
|
N(bfd_mach_mcf_isa_b_float, "m68k:isa-b:float",
|
|
FALSE, &arch_info_struct[23]),
|
|
N(bfd_mach_mcf_isa_b_float_mac, "m68k:isa-b:float:mac",
|
|
FALSE, &arch_info_struct[24]),
|
|
N(bfd_mach_mcf_isa_b_float_emac, "m68k:isa-b:float:emac",
|
|
FALSE, &arch_info_struct[25]),
|
|
N(bfd_mach_mcf_isa_c, "m68k:isa-c",
|
|
FALSE, &arch_info_struct[26]),
|
|
N(bfd_mach_mcf_isa_c_mac, "m68k:isa-c:mac",
|
|
FALSE, &arch_info_struct[27]),
|
|
N(bfd_mach_mcf_isa_c_emac, "m68k:isa-c:emac",
|
|
FALSE, &arch_info_struct[28]),
|
|
N(bfd_mach_mcf_isa_c_nodiv, "m68k:isa-c:nodiv",
|
|
FALSE, &arch_info_struct[29]),
|
|
N(bfd_mach_mcf_isa_c_nodiv_mac, "m68k:isa-c:nodiv:mac",
|
|
FALSE, &arch_info_struct[30]),
|
|
N(bfd_mach_mcf_isa_c_nodiv_emac, "m68k:isa-c:nodiv:emac",
|
|
FALSE, &arch_info_struct[31]),
|
|
|
|
/* Legacy names for CF architectures */
|
|
N(bfd_mach_mcf_isa_a_nodiv, "m68k:5200", FALSE, &arch_info_struct[32]),
|
|
N(bfd_mach_mcf_isa_a_mac,"m68k:5206e", FALSE, &arch_info_struct[33]),
|
|
N(bfd_mach_mcf_isa_a_mac, "m68k:5307", FALSE, &arch_info_struct[34]),
|
|
N(bfd_mach_mcf_isa_b_nousp_mac, "m68k:5407", FALSE, &arch_info_struct[35]),
|
|
N(bfd_mach_mcf_isa_aplus_emac, "m68k:528x", FALSE, &arch_info_struct[36]),
|
|
N(bfd_mach_mcf_isa_aplus_emac, "m68k:521x", FALSE, &arch_info_struct[37]),
|
|
N(bfd_mach_mcf_isa_a_emac, "m68k:5249", FALSE, &arch_info_struct[38]),
|
|
N(bfd_mach_mcf_isa_b_float_emac, "m68k:547x",
|
|
FALSE, &arch_info_struct[39]),
|
|
N(bfd_mach_mcf_isa_b_float_emac, "m68k:548x",
|
|
FALSE, &arch_info_struct[40]),
|
|
N(bfd_mach_mcf_isa_b_float_emac, "m68k:cfv4e", FALSE, 0),
|
|
};
|
|
|
|
const bfd_arch_info_type bfd_m68k_arch =
|
|
N(0, "m68k", TRUE, &arch_info_struct[0]);
|
|
|
|
/* Table indexed by bfd_mach_arch number indicating which
|
|
architectural features are supported. */
|
|
static const unsigned m68k_arch_features[] =
|
|
{
|
|
0,
|
|
m68000|m68881|m68851,
|
|
m68000|m68881|m68851,
|
|
m68010|m68881|m68851,
|
|
m68020|m68881|m68851,
|
|
m68030|m68881|m68851,
|
|
m68040|m68881|m68851,
|
|
m68060|m68881|m68851,
|
|
cpu32|m68881,
|
|
fido_a|m68881,
|
|
mcfisa_a,
|
|
mcfisa_a|mcfhwdiv,
|
|
mcfisa_a|mcfhwdiv|mcfmac,
|
|
mcfisa_a|mcfhwdiv|mcfemac,
|
|
mcfisa_a|mcfisa_aa|mcfhwdiv|mcfusp,
|
|
mcfisa_a|mcfisa_aa|mcfhwdiv|mcfusp|mcfmac,
|
|
mcfisa_a|mcfisa_aa|mcfhwdiv|mcfusp|mcfemac,
|
|
mcfisa_a|mcfhwdiv|mcfisa_b,
|
|
mcfisa_a|mcfhwdiv|mcfisa_b|mcfmac,
|
|
mcfisa_a|mcfhwdiv|mcfisa_b|mcfemac,
|
|
mcfisa_a|mcfhwdiv|mcfisa_b|mcfusp,
|
|
mcfisa_a|mcfhwdiv|mcfisa_b|mcfusp|mcfmac,
|
|
mcfisa_a|mcfhwdiv|mcfisa_b|mcfusp|mcfemac,
|
|
mcfisa_a|mcfhwdiv|mcfisa_b|mcfusp|cfloat,
|
|
mcfisa_a|mcfhwdiv|mcfisa_b|mcfusp|cfloat|mcfmac,
|
|
mcfisa_a|mcfhwdiv|mcfisa_b|mcfusp|cfloat|mcfemac,
|
|
mcfisa_a|mcfhwdiv|mcfisa_c|mcfusp,
|
|
mcfisa_a|mcfhwdiv|mcfisa_c|mcfusp|mcfmac,
|
|
mcfisa_a|mcfhwdiv|mcfisa_c|mcfusp|mcfemac,
|
|
mcfisa_a|mcfisa_c|mcfusp,
|
|
mcfisa_a|mcfisa_c|mcfusp|mcfmac,
|
|
mcfisa_a|mcfisa_c|mcfusp|mcfemac,
|
|
};
|
|
|
|
/* Return the count of bits set in MASK */
|
|
static unsigned
|
|
bit_count (unsigned mask)
|
|
{
|
|
unsigned ix;
|
|
|
|
for (ix = 0; mask; ix++)
|
|
/* Clear the LSB set */
|
|
mask ^= mask & -mask;
|
|
return ix;
|
|
}
|
|
|
|
/* Return the architectural features supported by MACH */
|
|
|
|
unsigned
|
|
bfd_m68k_mach_to_features (int mach)
|
|
{
|
|
if ((unsigned)mach
|
|
>= sizeof (m68k_arch_features) / sizeof (m68k_arch_features[0]))
|
|
mach = 0;
|
|
return m68k_arch_features[mach];
|
|
}
|
|
|
|
/* Return the bfd machine that most closely represents the
|
|
architectural features. We find the machine with the smallest
|
|
number of additional features. If there is no such machine, we
|
|
find the one with the smallest number of missing features. */
|
|
|
|
int bfd_m68k_features_to_mach (unsigned features)
|
|
{
|
|
int superset = 0, subset = 0;
|
|
unsigned extra = 99, missing = 99;
|
|
unsigned ix;
|
|
|
|
for (ix = 0;
|
|
ix != sizeof (m68k_arch_features) / sizeof (m68k_arch_features[0]);
|
|
ix++)
|
|
{
|
|
unsigned this_extra, this_missing;
|
|
|
|
if (m68k_arch_features[ix] == features)
|
|
return ix;
|
|
this_extra = bit_count (m68k_arch_features[ix] & ~features);
|
|
if (this_extra < extra)
|
|
{
|
|
extra = this_extra;
|
|
superset = ix;
|
|
}
|
|
|
|
this_missing = bit_count (features & ~m68k_arch_features[ix]);
|
|
if (this_missing < missing)
|
|
{
|
|
missing = this_missing;
|
|
superset = ix;
|
|
}
|
|
}
|
|
return superset ? superset : subset;
|
|
}
|
|
|
|
static const bfd_arch_info_type *
|
|
bfd_m68k_compatible (const bfd_arch_info_type *a,
|
|
const bfd_arch_info_type *b)
|
|
{
|
|
if (a->arch != b->arch)
|
|
return NULL;
|
|
|
|
if (a->bits_per_word != b->bits_per_word)
|
|
return NULL;
|
|
|
|
if (!a->mach)
|
|
return b;
|
|
if (!b->mach)
|
|
return a;
|
|
|
|
if (a->mach <= bfd_mach_m68060 && b->mach <= bfd_mach_m68060)
|
|
/* Merge m68k machine. */
|
|
return a->mach > b->mach ? a : b;
|
|
else if (a->mach >= bfd_mach_cpu32 && b->mach >= bfd_mach_cpu32)
|
|
{
|
|
/* Merge the machine features. */
|
|
unsigned features = (bfd_m68k_mach_to_features (a->mach)
|
|
| bfd_m68k_mach_to_features (b->mach));
|
|
|
|
/* CPU32 and Coldfire are incompatible. */
|
|
if ((~features & (cpu32 | mcfisa_a)) == 0)
|
|
return NULL;
|
|
|
|
/* Fido and Coldfire are incompatible. */
|
|
if ((~features & (fido_a | mcfisa_a)) == 0)
|
|
return NULL;
|
|
|
|
/* ISA A+ and ISA B are incompatible. */
|
|
if ((~features & (mcfisa_aa | mcfisa_b)) == 0)
|
|
return NULL;
|
|
|
|
/* ISA B and ISA C are incompatible. */
|
|
if ((~features & (mcfisa_b | mcfisa_c)) == 0)
|
|
return NULL;
|
|
|
|
/* MAC and EMAC code cannot be merged. */
|
|
if ((~features & (mcfmac | mcfemac)) == 0)
|
|
return NULL;
|
|
|
|
/* CPU32 is compatible with Fido except that Fido does not
|
|
support tbl instructions. Warn when the user wants to mix
|
|
the two. */
|
|
if ((a->mach == bfd_mach_cpu32 && b->mach == bfd_mach_fido)
|
|
|| (a->mach == bfd_mach_fido && b->mach == bfd_mach_cpu32))
|
|
{
|
|
static int cpu32_fido_mix_warning;
|
|
if (!cpu32_fido_mix_warning)
|
|
{
|
|
cpu32_fido_mix_warning = 1;
|
|
_bfd_error_handler ("warning: linking CPU32 objects with fido objects");
|
|
}
|
|
return bfd_lookup_arch (a->arch,
|
|
bfd_m68k_features_to_mach (fido_a | m68881));
|
|
}
|
|
|
|
return bfd_lookup_arch (a->arch, bfd_m68k_features_to_mach (features));
|
|
}
|
|
else
|
|
/* They are incompatible. */
|
|
return NULL;
|
|
}
|