/* BFD library support routines for architectures.
- Copyright 1990, 1991, 1992, 1993, 1994, 1997, 1998, 2000, 2001, 2002,
- 2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 1990-2020 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 2 of the License, or
+ 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,
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. */
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
-#include "bfd.h"
#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_default_compatible,bfd_default_scan, 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_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_cpu32, "m68k:cpu32", FALSE, &arch_info_struct[7]),
- N(bfd_mach_mcf5200, "m68k:5200", FALSE, &arch_info_struct[8]),
- N(bfd_mach_mcf5206e,"m68k:5206e", FALSE, &arch_info_struct[9]),
- N(bfd_mach_mcf5307, "m68k:5307", FALSE, &arch_info_struct[10]),
- N(bfd_mach_mcf5407, "m68k:5407", FALSE, &arch_info_struct[11]),
- N(bfd_mach_m68060, "m68k:68060", FALSE, &arch_info_struct[12]),
- N(bfd_mach_mcf528x, "m68k:528x", FALSE, &arch_info_struct[13]),
- N(bfd_mach_mcf521x, "m68k:521x", FALSE, &arch_info_struct[14]),
- N(bfd_mach_mcf5249, "m68k:5249", FALSE, &arch_info_struct[15]),
- N(bfd_mach_mcf547x, "m68k:547x", FALSE, &arch_info_struct[16]),
- N(bfd_mach_mcf548x, "m68k:548x", FALSE, &arch_info_struct[17]),
- N(bfd_mach_mcfv4e, "m68k:cfv4e", FALSE, 0),
+ 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;
+}
projects / deliverable / binutils-gdb.git / blobdiff