/* BFD support for the ARC processor
- Copyright 1994, 1995 Free Software Foundation, Inc.
+ Copyright (C) 1994-2020 Free Software Foundation, Inc.
Contributed by Doug Evans (dje@cygnus.com).
-This file is part of BFD, the Binary File Descriptor library.
+ 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 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.
+ 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. */
+ 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 "bfd.h"
#include "sysdep.h"
+#include "bfd.h"
#include "libbfd.h"
-#define ARC(mach, print_name, default_p) \
-{ \
- 32, /* 32 bits in a word */ \
- 32, /* 32 bits in an address */ \
- 8, /* 8 bits in a byte */ \
+static const bfd_arch_info_type *
+arc_compatible (const bfd_arch_info_type *a, const bfd_arch_info_type *b);
+
+#define ARC(mach, print_name, default_p, next) \
+ { \
+ 32, /* Bits in a word. */ \
+ 32, /* Bits in an address. */ \
+ 8, /* Bits in a byte. */ \
bfd_arch_arc, \
mach, \
"arc", \
print_name, \
- 4, /* section alignment power */ \
+ 4, /* Section alignment power. */ \
default_p, \
- bfd_default_compatible, \
+ arc_compatible, \
bfd_default_scan, \
- 0, \
+ bfd_arch_default_fill, \
+ next, \
+ 0 /* Maximum offset of a reloc from the start of an insn. */ \
}
-static bfd_arch_info_type arch_info_struct[] =
+static const bfd_arch_info_type arch_info_struct[] =
{
- ARC (bfd_mach_arc_base, "arc-base", true),
- ARC (bfd_mach_arc_host, "arc-host", false),
- ARC (bfd_mach_arc_graphics, "arc-graphics", false),
- ARC (bfd_mach_arc_audio, "arc-audio", false),
+ ARC (bfd_mach_arc_arc600, "A6" , FALSE, &arch_info_struct[1]),
+ ARC (bfd_mach_arc_arc601, "ARC601", FALSE, &arch_info_struct[2]),
+ ARC (bfd_mach_arc_arc700, "ARC700", FALSE, &arch_info_struct[3]),
+ ARC (bfd_mach_arc_arc700, "A7", FALSE, &arch_info_struct[4]),
+ ARC (bfd_mach_arc_arcv2, "ARCv2", FALSE, &arch_info_struct[5]),
+ ARC (bfd_mach_arc_arcv2, "EM", FALSE, &arch_info_struct[6]),
+ ARC (bfd_mach_arc_arcv2, "HS", FALSE, NULL),
};
-void
-bfd_arc_arch ()
+const bfd_arch_info_type bfd_arc_arch =
+ ARC (bfd_mach_arc_arc600, "ARC600", TRUE, &arch_info_struct[0]);
+
+/* ARC-specific "compatible" function. The general rule is that if A and B are
+ compatible, then this function should return architecture that is more
+ "feature-rich", that is, can run both A and B. ARCv2, EM and HS all has
+ same mach number, so bfd_default_compatible assumes they are the same, and
+ returns an A. That causes issues with GDB, because GDB assumes that if
+ machines are compatible, then "compatible ()" always returns same machine
+ regardless of argument order. As a result GDB gets confused because, for
+ example, compatible (ARCv2, EM) returns ARCv2, but compatible (EM, ARCv2)
+ returns EM, hence GDB is not sure if they are compatible and prints a
+ warning. */
+
+static const bfd_arch_info_type *
+arc_compatible (const bfd_arch_info_type *a, const bfd_arch_info_type *b)
{
- register unsigned int i;
+ const bfd_arch_info_type * const em = &arch_info_struct[5];
+ const bfd_arch_info_type * const hs = &arch_info_struct[6];
- for (i = 0; i < sizeof (arch_info_struct) / sizeof (arch_info_struct[0]); i++)
- bfd_arch_linkin (&arch_info_struct[i]);
-}
-\f
-/* Utility routines. */
+ /* Trivial case where a and b is the same instance. Some callers already
+ check this condition but some do not and get an invalid result. */
+ if (a == b)
+ return a;
-/* Given cpu type NAME, return its bfd_mach_arc_xxx value.
- NAME is one of "base, audio, etc.".
- Returns -1 if not found. */
+ /* If a & b are for different architecture we can do nothing. */
+ if (a->arch != b->arch)
+ return NULL;
-int
-arc_get_mach (name)
- char *name;
-{
- register unsigned int i;
-
- for (i = 0; i < sizeof (arch_info_struct) / sizeof (arch_info_struct[0]); i++)
- {
- /* +4: skip over "arc-" */
- if (strcmp (name, arch_info_struct[i].printable_name + 4) == 0)
- return arch_info_struct[i].mach;
- }
- return -1;
+ if (a->bits_per_word != b->bits_per_word)
+ return NULL;
+
+ /* ARCv2|EM and EM. */
+ if ((a->mach == bfd_mach_arc_arcv2 && b == em)
+ || (b->mach == bfd_mach_arc_arcv2 && a == em))
+ return em;
+
+ /* ARCv2|HS and HS. */
+ if ((a->mach == bfd_mach_arc_arcv2 && b == hs)
+ || (b->mach == bfd_mach_arc_arcv2 && a == hs))
+ return hs;
+
+ return bfd_default_compatible (a, b);
}
projects / deliverable / binutils-gdb.git / blobdiff