diff --git a/opcodes/disassemble.c b/opcodes/disassemble.c
new file mode 100644
index 0000000000..fec0749e0a
--- /dev/null
+++ b/opcodes/disassemble.c
@@ -0,0 +1,157 @@
+/* Select disassembly routine for specified architecture.
+   Copyright 1994 Free Software Foundation, Inc.
+
+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 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#include "ansidecl.h"
+#include "dis-asm.h"
+
+#ifdef ARCH_all
+#define ARCH_a29k
+#define ARCH_alpha
+#define ARCH_arm
+#define ARCH_h8300
+#define ARCH_h8500
+#define ARCH_hppa
+#define ARCH_i386
+#define ARCH_i960
+#define ARCH_m68k
+#define ARCH_m88k
+#define ARCH_mips
+#define ARCH_ns32k
+#define ARCH_powerpc
+#define ARCH_rs6000
+#define ARCH_sh
+#define ARCH_sparc
+#define ARCH_z8k
+#endif
+
+disassembler_ftype
+disassembler (abfd)
+     bfd *abfd;
+{
+  enum bfd_architecture a = bfd_get_arch (abfd);
+  disassembler_ftype disassemble;
+
+  switch (a)
+    {
+      /* If you add a case to this table, also add it to the
+	 ARCH_all definition right above this function.  */
+#ifdef ARCH_a29k
+    case bfd_arch_a29k:
+      /* As far as I know we only handle big-endian 29k objects.  */
+      disassemble = print_insn_big_a29k;
+      break;
+#endif
+#ifdef ARCH_alpha
+    case bfd_arch_alpha:
+      disassemble = print_insn_alpha;
+      break;
+#endif
+#ifdef ARCH_arm
+    case bfd_arch_arm:
+      disassemble = print_insn_arm;
+      break;
+#endif
+#ifdef ARCH_h8300
+    case bfd_arch_h8300:
+      if (bfd_get_mach(abfd) == bfd_mach_h8300h)
+	disassemble = print_insn_h8300h;
+      else 
+	disassemble = print_insn_h8300;
+      break;
+#endif
+#ifdef ARCH_h8500
+    case bfd_arch_h8500:
+      disassemble = print_insn_h8500;
+      break;
+#endif
+#ifdef ARCH_hppa
+    case bfd_arch_hppa:
+      disassemble = print_insn_hppa;
+      break;
+#endif
+#ifdef ARCH_i386
+    case bfd_arch_i386:
+      disassemble = print_insn_i386;
+      break;
+#endif
+#ifdef ARCH_i960
+    case bfd_arch_i960:
+      disassemble = print_insn_i960;
+      break;
+#endif
+#ifdef ARCH_m68k
+    case bfd_arch_m68k:
+      disassemble = print_insn_m68k;
+      break;
+#endif
+#ifdef ARCH_m88k
+    case bfd_arch_m88k:
+      disassemble = print_insn_m88k;
+      break;
+#endif
+#ifdef ARCH_ns32k
+    case bfd_arch_ns32k:
+      disassemble = print_insn_ns32k;
+      break;
+#endif
+#ifdef ARCH_mips
+    case bfd_arch_mips:
+      if (abfd->xvec->byteorder_big_p)
+	disassemble = print_insn_big_mips;
+      else
+	disassemble = print_insn_little_mips;
+      break;
+#endif
+#ifdef ARCH_powerpc
+    case bfd_arch_powerpc:
+      if (abfd->xvec->byteorder_big_p)
+	disassemble = print_insn_big_powerpc;
+      else
+	disassemble = print_insn_little_powerpc;
+      break;
+#endif
+#ifdef ARCH_rs6000
+    case bfd_arch_rs6000:
+      disassemble = print_insn_rs6000;
+      break;
+#endif
+#ifdef ARCH_sh
+    case bfd_arch_sh:
+      if (abfd->xvec->byteorder_big_p)
+	disassemble = print_insn_sh;
+      else
+	disassemble = print_insn_shl;
+      break;
+#endif
+#ifdef ARCH_sparc
+    case bfd_arch_sparc:
+      disassemble = print_insn_sparc;
+      break;
+#endif
+#ifdef ARCH_z8k
+    case bfd_arch_z8k:
+      if (bfd_get_mach(abfd) == bfd_mach_z8001)
+	disassemble = print_insn_z8001;
+      else 
+	disassemble = print_insn_z8002;
+      break;
+#endif
+    default:
+      return 0;
+    }
+  return disassemble;
+}