Add support for 64-bit ARM architecture: AArch64

1 files changed, 121 insertions, 0 deletions

diff --git a/bfd/cpu-aarch64.c b/bfd/cpu-aarch64.c
new file mode 100644
index 00000000000..81620371ffe
--- /dev/null
+++ b/bfd/cpu-aarch64.c
@@ -0,0 +1,121 @@
+/* BFD support for AArch64.
+   Copyright 2009, 2010, 2011, 2012  Free Software Foundation, Inc.
+   Contributed by ARM Ltd.
+
+   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; see the file COPYING3. If not,
+   see <http://www.gnu.org/licenses/>.  */
+
+#include "sysdep.h"
+#include "bfd.h"
+#include "libbfd.h"
+#include "libiberty.h"
+
+/* This routine is provided two arch_infos and works out which Aarch64
+   machine which would be compatible with both and returns a pointer
+   to its info structure.  */
+
+static const bfd_arch_info_type *
+compatible (const bfd_arch_info_type * a, const bfd_arch_info_type * b)
+{
+  /* If a & b are for different architecture we can do nothing.  */
+  if (a->arch != b->arch)
+    return NULL;
+
+  /* If a & b are for the same machine then all is well.  */
+  if (a->mach == b->mach)
+    return a;
+
+  /* Otherwise if either a or b is the 'default' machine
+     then it can be polymorphed into the other.  */
+  if (a->the_default)
+    return b;
+
+  if (b->the_default)
+    return a;
+
+  /* So far all newer cores are
+     supersets of previous cores.  */
+  if (a->mach < b->mach)
+    return b;
+  else if (a->mach > b->mach)
+    return a;
+
+  /* Never reached!  */
+  return NULL;
+}
+
+static struct
+{
+  unsigned int mach;
+  char *name;
+}
+processors[] =
+{
+  /* These two are example CPUs supported in GCC, once we have real
+     CPUs they will be removed.  */
+  { bfd_mach_aarch64, "example-1" },
+  { bfd_mach_aarch64, "example-2" }
+};
+
+static bfd_boolean
+scan (const struct bfd_arch_info *info, const char *string)
+{
+  int i;
+
+  /* First test for an exact match.  */
+  if (strcasecmp (string, info->printable_name) == 0)
+    return TRUE;
+
+  /* Next check for a processor name instead of an Architecture name.  */
+  for (i = sizeof (processors) / sizeof (processors[0]); i--;)
+    {
+      if (strcasecmp (string, processors[i].name) == 0)
+	break;
+    }
+
+  if (i != -1 && info->mach == processors[i].mach)
+    return TRUE;
+
+  /* Finally check for the default architecture.  */
+  if (strcasecmp (string, "aarch64") == 0)
+    return info->the_default;
+
+  return FALSE;
+}
+
+#define N(NUMBER, PRINT, DEFAULT, NEXT)				\
+  { 64, 64, 8, bfd_arch_aarch64, NUMBER,			\
+    "aarch64", PRINT, 4, DEFAULT, compatible, scan,		\
+    bfd_arch_default_fill, NEXT }
+
+const bfd_arch_info_type bfd_aarch64_arch =
+  N (0, "aarch64", TRUE, NULL);
+
+
+bfd_boolean
+bfd_is_aarch64_special_symbol_name (const char *name, int type)
+{
+  if (!name || name[0] != '$')
+    return FALSE;
+  if (name[1] == 'x' || name[1] == 'd')
+    type &= BFD_AARCH64_SPECIAL_SYM_TYPE_MAP;
+  else if (name[1] == 'm' || name[1] == 'f' || name[1] == 'p')
+    type &= BFD_AARCH64_SPECIAL_SYM_TYPE_TAG;
+  else
+    return FALSE;
+
+  return (type != 0 && (name[2] == 0 || name[2] == '.'));
+}