| 1 |
14 |
khays |
/* BFD library support routines for architectures.
|
| 2 |
|
|
Copyright 1990, 1991, 1992, 1993, 1994, 1997, 1998, 2000, 2001, 2002,
|
| 3 |
|
|
2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
|
| 4 |
|
|
Hacked by Steve Chamberlain of Cygnus Support.
|
| 5 |
|
|
|
| 6 |
|
|
This file is part of BFD, the Binary File Descriptor library.
|
| 7 |
|
|
|
| 8 |
|
|
This program is free software; you can redistribute it and/or modify
|
| 9 |
|
|
it under the terms of the GNU General Public License as published by
|
| 10 |
|
|
the Free Software Foundation; either version 3 of the License, or
|
| 11 |
|
|
(at your option) any later version.
|
| 12 |
|
|
|
| 13 |
|
|
This program is distributed in the hope that it will be useful,
|
| 14 |
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 15 |
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
| 16 |
|
|
GNU General Public License for more details.
|
| 17 |
|
|
|
| 18 |
|
|
You should have received a copy of the GNU General Public License
|
| 19 |
|
|
along with this program; if not, write to the Free Software
|
| 20 |
|
|
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
|
| 21 |
|
|
MA 02110-1301, USA. */
|
| 22 |
|
|
|
| 23 |
|
|
#include "sysdep.h"
|
| 24 |
|
|
#include "bfd.h"
|
| 25 |
|
|
#include "libbfd.h"
|
| 26 |
|
|
#include "opcode/m68k.h"
|
| 27 |
|
|
|
| 28 |
|
|
static const bfd_arch_info_type *
|
| 29 |
|
|
bfd_m68k_compatible (const bfd_arch_info_type *a,
|
| 30 |
|
|
const bfd_arch_info_type *b);
|
| 31 |
|
|
|
| 32 |
|
|
#define N(name, print,d,next) \
|
| 33 |
|
|
{ 32, 32, 8, bfd_arch_m68k, name, "m68k",print,2,d,bfd_m68k_compatible,bfd_default_scan, next, }
|
| 34 |
|
|
|
| 35 |
|
|
static const bfd_arch_info_type arch_info_struct[] =
|
| 36 |
|
|
{
|
| 37 |
|
|
N(bfd_mach_m68000, "m68k:68000", FALSE, &arch_info_struct[1]),
|
| 38 |
|
|
N(bfd_mach_m68008, "m68k:68008", FALSE, &arch_info_struct[2]),
|
| 39 |
|
|
N(bfd_mach_m68010, "m68k:68010", FALSE, &arch_info_struct[3]),
|
| 40 |
|
|
N(bfd_mach_m68020, "m68k:68020", FALSE, &arch_info_struct[4]),
|
| 41 |
|
|
N(bfd_mach_m68030, "m68k:68030", FALSE, &arch_info_struct[5]),
|
| 42 |
|
|
N(bfd_mach_m68040, "m68k:68040", FALSE, &arch_info_struct[6]),
|
| 43 |
|
|
N(bfd_mach_m68060, "m68k:68060", FALSE, &arch_info_struct[7]),
|
| 44 |
|
|
N(bfd_mach_cpu32, "m68k:cpu32", FALSE, &arch_info_struct[8]),
|
| 45 |
|
|
N(bfd_mach_fido, "m68k:fido", FALSE, &arch_info_struct[9]),
|
| 46 |
|
|
|
| 47 |
|
|
/* Various combinations of CF architecture features */
|
| 48 |
|
|
N(bfd_mach_mcf_isa_a_nodiv, "m68k:isa-a:nodiv",
|
| 49 |
|
|
FALSE, &arch_info_struct[10]),
|
| 50 |
|
|
N(bfd_mach_mcf_isa_a, "m68k:isa-a",
|
| 51 |
|
|
FALSE, &arch_info_struct[11]),
|
| 52 |
|
|
N(bfd_mach_mcf_isa_a_mac, "m68k:isa-a:mac",
|
| 53 |
|
|
FALSE, &arch_info_struct[12]),
|
| 54 |
|
|
N(bfd_mach_mcf_isa_a_emac, "m68k:isa-a:emac",
|
| 55 |
|
|
FALSE, &arch_info_struct[13]),
|
| 56 |
|
|
N(bfd_mach_mcf_isa_aplus, "m68k:isa-aplus",
|
| 57 |
|
|
FALSE, &arch_info_struct[14]),
|
| 58 |
|
|
N(bfd_mach_mcf_isa_aplus_mac, "m68k:isa-aplus:mac",
|
| 59 |
|
|
FALSE, &arch_info_struct[15]),
|
| 60 |
|
|
N(bfd_mach_mcf_isa_aplus_emac, "m68k:isa-aplus:emac",
|
| 61 |
|
|
FALSE, &arch_info_struct[16]),
|
| 62 |
|
|
N(bfd_mach_mcf_isa_b_nousp, "m68k:isa-b:nousp",
|
| 63 |
|
|
FALSE, &arch_info_struct[17]),
|
| 64 |
|
|
N(bfd_mach_mcf_isa_b_nousp_mac, "m68k:isa-b:nousp:mac",
|
| 65 |
|
|
FALSE, &arch_info_struct[18]),
|
| 66 |
|
|
N(bfd_mach_mcf_isa_b_nousp_emac, "m68k:isa-b:nousp:emac",
|
| 67 |
|
|
FALSE, &arch_info_struct[19]),
|
| 68 |
|
|
N(bfd_mach_mcf_isa_b, "m68k:isa-b",
|
| 69 |
|
|
FALSE, &arch_info_struct[20]),
|
| 70 |
|
|
N(bfd_mach_mcf_isa_b_mac, "m68k:isa-b:mac",
|
| 71 |
|
|
FALSE, &arch_info_struct[21]),
|
| 72 |
|
|
N(bfd_mach_mcf_isa_b_emac, "m68k:isa-b:emac",
|
| 73 |
|
|
FALSE, &arch_info_struct[22]),
|
| 74 |
|
|
N(bfd_mach_mcf_isa_b_float, "m68k:isa-b:float",
|
| 75 |
|
|
FALSE, &arch_info_struct[23]),
|
| 76 |
|
|
N(bfd_mach_mcf_isa_b_float_mac, "m68k:isa-b:float:mac",
|
| 77 |
|
|
FALSE, &arch_info_struct[24]),
|
| 78 |
|
|
N(bfd_mach_mcf_isa_b_float_emac, "m68k:isa-b:float:emac",
|
| 79 |
|
|
FALSE, &arch_info_struct[25]),
|
| 80 |
|
|
N(bfd_mach_mcf_isa_c, "m68k:isa-c",
|
| 81 |
|
|
FALSE, &arch_info_struct[26]),
|
| 82 |
|
|
N(bfd_mach_mcf_isa_c_mac, "m68k:isa-c:mac",
|
| 83 |
|
|
FALSE, &arch_info_struct[27]),
|
| 84 |
|
|
N(bfd_mach_mcf_isa_c_emac, "m68k:isa-c:emac",
|
| 85 |
|
|
FALSE, &arch_info_struct[28]),
|
| 86 |
|
|
N(bfd_mach_mcf_isa_c_nodiv, "m68k:isa-c:nodiv",
|
| 87 |
|
|
FALSE, &arch_info_struct[29]),
|
| 88 |
|
|
N(bfd_mach_mcf_isa_c_nodiv_mac, "m68k:isa-c:nodiv:mac",
|
| 89 |
|
|
FALSE, &arch_info_struct[30]),
|
| 90 |
|
|
N(bfd_mach_mcf_isa_c_nodiv_emac, "m68k:isa-c:nodiv:emac",
|
| 91 |
|
|
FALSE, &arch_info_struct[31]),
|
| 92 |
|
|
|
| 93 |
|
|
/* Legacy names for CF architectures */
|
| 94 |
|
|
N(bfd_mach_mcf_isa_a_nodiv, "m68k:5200", FALSE, &arch_info_struct[32]),
|
| 95 |
|
|
N(bfd_mach_mcf_isa_a_mac,"m68k:5206e", FALSE, &arch_info_struct[33]),
|
| 96 |
|
|
N(bfd_mach_mcf_isa_a_mac, "m68k:5307", FALSE, &arch_info_struct[34]),
|
| 97 |
|
|
N(bfd_mach_mcf_isa_b_nousp_mac, "m68k:5407", FALSE, &arch_info_struct[35]),
|
| 98 |
|
|
N(bfd_mach_mcf_isa_aplus_emac, "m68k:528x", FALSE, &arch_info_struct[36]),
|
| 99 |
|
|
N(bfd_mach_mcf_isa_aplus_emac, "m68k:521x", FALSE, &arch_info_struct[37]),
|
| 100 |
|
|
N(bfd_mach_mcf_isa_a_emac, "m68k:5249", FALSE, &arch_info_struct[38]),
|
| 101 |
|
|
N(bfd_mach_mcf_isa_b_float_emac, "m68k:547x",
|
| 102 |
|
|
FALSE, &arch_info_struct[39]),
|
| 103 |
|
|
N(bfd_mach_mcf_isa_b_float_emac, "m68k:548x",
|
| 104 |
|
|
FALSE, &arch_info_struct[40]),
|
| 105 |
|
|
N(bfd_mach_mcf_isa_b_float_emac, "m68k:cfv4e", FALSE, 0),
|
| 106 |
|
|
};
|
| 107 |
|
|
|
| 108 |
|
|
const bfd_arch_info_type bfd_m68k_arch =
|
| 109 |
|
|
N(0, "m68k", TRUE, &arch_info_struct[0]);
|
| 110 |
|
|
|
| 111 |
|
|
/* Table indexed by bfd_mach_arch number indicating which
|
| 112 |
|
|
architectural features are supported. */
|
| 113 |
|
|
static const unsigned m68k_arch_features[] =
|
| 114 |
|
|
{
|
| 115 |
|
|
0,
|
| 116 |
|
|
m68000|m68881|m68851,
|
| 117 |
|
|
m68000|m68881|m68851,
|
| 118 |
|
|
m68010|m68881|m68851,
|
| 119 |
|
|
m68020|m68881|m68851,
|
| 120 |
|
|
m68030|m68881|m68851,
|
| 121 |
|
|
m68040|m68881|m68851,
|
| 122 |
|
|
m68060|m68881|m68851,
|
| 123 |
|
|
cpu32|m68881,
|
| 124 |
|
|
fido_a|m68881,
|
| 125 |
|
|
mcfisa_a,
|
| 126 |
|
|
mcfisa_a|mcfhwdiv,
|
| 127 |
|
|
mcfisa_a|mcfhwdiv|mcfmac,
|
| 128 |
|
|
mcfisa_a|mcfhwdiv|mcfemac,
|
| 129 |
|
|
mcfisa_a|mcfisa_aa|mcfhwdiv|mcfusp,
|
| 130 |
|
|
mcfisa_a|mcfisa_aa|mcfhwdiv|mcfusp|mcfmac,
|
| 131 |
|
|
mcfisa_a|mcfisa_aa|mcfhwdiv|mcfusp|mcfemac,
|
| 132 |
|
|
mcfisa_a|mcfhwdiv|mcfisa_b,
|
| 133 |
|
|
mcfisa_a|mcfhwdiv|mcfisa_b|mcfmac,
|
| 134 |
|
|
mcfisa_a|mcfhwdiv|mcfisa_b|mcfemac,
|
| 135 |
|
|
mcfisa_a|mcfhwdiv|mcfisa_b|mcfusp,
|
| 136 |
|
|
mcfisa_a|mcfhwdiv|mcfisa_b|mcfusp|mcfmac,
|
| 137 |
|
|
mcfisa_a|mcfhwdiv|mcfisa_b|mcfusp|mcfemac,
|
| 138 |
|
|
mcfisa_a|mcfhwdiv|mcfisa_b|mcfusp|cfloat,
|
| 139 |
|
|
mcfisa_a|mcfhwdiv|mcfisa_b|mcfusp|cfloat|mcfmac,
|
| 140 |
|
|
mcfisa_a|mcfhwdiv|mcfisa_b|mcfusp|cfloat|mcfemac,
|
| 141 |
|
|
mcfisa_a|mcfhwdiv|mcfisa_c|mcfusp,
|
| 142 |
|
|
mcfisa_a|mcfhwdiv|mcfisa_c|mcfusp|mcfmac,
|
| 143 |
|
|
mcfisa_a|mcfhwdiv|mcfisa_c|mcfusp|mcfemac,
|
| 144 |
|
|
mcfisa_a|mcfisa_c|mcfusp,
|
| 145 |
|
|
mcfisa_a|mcfisa_c|mcfusp|mcfmac,
|
| 146 |
|
|
mcfisa_a|mcfisa_c|mcfusp|mcfemac,
|
| 147 |
|
|
};
|
| 148 |
|
|
|
| 149 |
|
|
/* Return the count of bits set in MASK */
|
| 150 |
|
|
static unsigned
|
| 151 |
|
|
bit_count (unsigned mask)
|
| 152 |
|
|
{
|
| 153 |
|
|
unsigned ix;
|
| 154 |
|
|
|
| 155 |
|
|
for (ix = 0; mask; ix++)
|
| 156 |
|
|
/* Clear the LSB set */
|
| 157 |
|
|
mask ^= mask & -mask;
|
| 158 |
|
|
return ix;
|
| 159 |
|
|
}
|
| 160 |
|
|
|
| 161 |
|
|
/* Return the architectural features supported by MACH */
|
| 162 |
|
|
|
| 163 |
|
|
unsigned
|
| 164 |
|
|
bfd_m68k_mach_to_features (int mach)
|
| 165 |
|
|
{
|
| 166 |
|
|
if ((unsigned)mach
|
| 167 |
|
|
>= sizeof (m68k_arch_features) / sizeof (m68k_arch_features[0]))
|
| 168 |
|
|
mach = 0;
|
| 169 |
|
|
return m68k_arch_features[mach];
|
| 170 |
|
|
}
|
| 171 |
|
|
|
| 172 |
|
|
/* Return the bfd machine that most closely represents the
|
| 173 |
|
|
architectural features. We find the machine with the smallest
|
| 174 |
|
|
number of additional features. If there is no such machine, we
|
| 175 |
|
|
find the one with the smallest number of missing features. */
|
| 176 |
|
|
|
| 177 |
|
|
int bfd_m68k_features_to_mach (unsigned features)
|
| 178 |
|
|
{
|
| 179 |
|
|
int superset = 0, subset = 0;
|
| 180 |
|
|
unsigned extra = 99, missing = 99;
|
| 181 |
|
|
unsigned ix;
|
| 182 |
|
|
|
| 183 |
|
|
for (ix = 0;
|
| 184 |
|
|
ix != sizeof (m68k_arch_features) / sizeof (m68k_arch_features[0]);
|
| 185 |
|
|
ix++)
|
| 186 |
|
|
{
|
| 187 |
|
|
unsigned this_extra, this_missing;
|
| 188 |
|
|
|
| 189 |
|
|
if (m68k_arch_features[ix] == features)
|
| 190 |
|
|
return ix;
|
| 191 |
|
|
this_extra = bit_count (m68k_arch_features[ix] & ~features);
|
| 192 |
|
|
if (this_extra < extra)
|
| 193 |
|
|
{
|
| 194 |
|
|
extra = this_extra;
|
| 195 |
|
|
superset = ix;
|
| 196 |
|
|
}
|
| 197 |
|
|
|
| 198 |
|
|
this_missing = bit_count (features & ~m68k_arch_features[ix]);
|
| 199 |
|
|
if (this_missing < missing)
|
| 200 |
|
|
{
|
| 201 |
|
|
missing = this_missing;
|
| 202 |
|
|
superset = ix;
|
| 203 |
|
|
}
|
| 204 |
|
|
}
|
| 205 |
|
|
return superset ? superset : subset;
|
| 206 |
|
|
}
|
| 207 |
|
|
|
| 208 |
|
|
static const bfd_arch_info_type *
|
| 209 |
|
|
bfd_m68k_compatible (const bfd_arch_info_type *a,
|
| 210 |
|
|
const bfd_arch_info_type *b)
|
| 211 |
|
|
{
|
| 212 |
|
|
if (a->arch != b->arch)
|
| 213 |
|
|
return NULL;
|
| 214 |
|
|
|
| 215 |
|
|
if (a->bits_per_word != b->bits_per_word)
|
| 216 |
|
|
return NULL;
|
| 217 |
|
|
|
| 218 |
|
|
if (!a->mach)
|
| 219 |
|
|
return b;
|
| 220 |
|
|
if (!b->mach)
|
| 221 |
|
|
return a;
|
| 222 |
|
|
|
| 223 |
|
|
if (a->mach <= bfd_mach_m68060 && b->mach <= bfd_mach_m68060)
|
| 224 |
|
|
/* Merge m68k machine. */
|
| 225 |
|
|
return a->mach > b->mach ? a : b;
|
| 226 |
|
|
else if (a->mach >= bfd_mach_cpu32 && b->mach >= bfd_mach_cpu32)
|
| 227 |
|
|
{
|
| 228 |
|
|
/* Merge the machine features. */
|
| 229 |
|
|
unsigned features = (bfd_m68k_mach_to_features (a->mach)
|
| 230 |
|
|
| bfd_m68k_mach_to_features (b->mach));
|
| 231 |
|
|
|
| 232 |
|
|
/* CPU32 and Coldfire are incompatible. */
|
| 233 |
|
|
if ((~features & (cpu32 | mcfisa_a)) == 0)
|
| 234 |
|
|
return NULL;
|
| 235 |
|
|
|
| 236 |
|
|
/* Fido and Coldfire are incompatible. */
|
| 237 |
|
|
if ((~features & (fido_a | mcfisa_a)) == 0)
|
| 238 |
|
|
return NULL;
|
| 239 |
|
|
|
| 240 |
|
|
/* ISA A+ and ISA B are incompatible. */
|
| 241 |
|
|
if ((~features & (mcfisa_aa | mcfisa_b)) == 0)
|
| 242 |
|
|
return NULL;
|
| 243 |
|
|
|
| 244 |
|
|
/* ISA B and ISA C are incompatible. */
|
| 245 |
|
|
if ((~features & (mcfisa_b | mcfisa_c)) == 0)
|
| 246 |
|
|
return NULL;
|
| 247 |
|
|
|
| 248 |
|
|
/* MAC and EMAC code cannot be merged. */
|
| 249 |
|
|
if ((~features & (mcfmac | mcfemac)) == 0)
|
| 250 |
|
|
return NULL;
|
| 251 |
|
|
|
| 252 |
|
|
/* CPU32 is compatible with Fido except that Fido does not
|
| 253 |
|
|
support tbl instructions. Warn when the user wants to mix
|
| 254 |
|
|
the two. */
|
| 255 |
|
|
if ((a->mach == bfd_mach_cpu32 && b->mach == bfd_mach_fido)
|
| 256 |
|
|
|| (a->mach == bfd_mach_fido && b->mach == bfd_mach_cpu32))
|
| 257 |
|
|
{
|
| 258 |
|
|
static int cpu32_fido_mix_warning;
|
| 259 |
|
|
if (!cpu32_fido_mix_warning)
|
| 260 |
|
|
{
|
| 261 |
|
|
cpu32_fido_mix_warning = 1;
|
| 262 |
|
|
(*_bfd_error_handler) ("warning: linking CPU32 objects with fido objects");
|
| 263 |
|
|
}
|
| 264 |
|
|
return bfd_lookup_arch (a->arch,
|
| 265 |
|
|
bfd_m68k_features_to_mach (fido_a | m68881));
|
| 266 |
|
|
}
|
| 267 |
|
|
|
| 268 |
|
|
return bfd_lookup_arch (a->arch, bfd_m68k_features_to_mach (features));
|
| 269 |
|
|
}
|
| 270 |
|
|
else
|
| 271 |
|
|
/* They are incompatible. */
|
| 272 |
|
|
return NULL;
|
| 273 |
|
|
}
|
