19990502 sourceware importbinu_ss_19990502

1 files changed, 887 insertions, 0 deletions

diff --git a/opcodes/arm-dis.c b/opcodes/arm-dis.c
new file mode 100644
index 0000000..4aabf72
--- /dev/null
+++ b/opcodes/arm-dis.c
@@ -0,0 +1,887 @@
+/* Instruction printing code for the ARM
+   Copyright (C) 1994, 95, 96, 97, 1998 Free Software Foundation, Inc. 
+   Contributed by Richard Earnshaw (rwe@pegasus.esprit.ec.org)
+   Modification by James G. Smith (jsmith@cygnus.co.uk)
+
+This file is part of libopcodes. 
+
+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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#include "dis-asm.h"
+#define DEFINE_TABLE
+#include "arm-opc.h"
+#include "coff/internal.h"
+#include "libcoff.h"
+#include "opintl.h"
+
+/* FIXME: This shouldn't be done here */
+#include "elf-bfd.h"
+#include "elf/internal.h"
+#include "elf/arm.h"
+
+static char *arm_conditional[] =
+{"eq", "ne", "cs", "cc", "mi", "pl", "vs", "vc",
+ "hi", "ls", "ge", "lt", "gt", "le", "", "nv"};
+
+static char *arm_regnames[] =
+{"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r8", "r9", "sl", "fp", "ip", "sp", "lr", "pc"};
+
+static char *arm_fp_const[] =
+{"0.0", "1.0", "2.0", "3.0", "4.0", "5.0", "0.5", "10.0"};
+
+static char *arm_shift[] = 
+{"lsl", "lsr", "asr", "ror"};
+
+static int print_insn_arm PARAMS ((bfd_vma, struct disassemble_info *,
+				   long));
+
+static void
+arm_decode_shift (given, func, stream)
+     long given;
+     fprintf_ftype func;
+     void *stream;
+{
+  func (stream, "%s", arm_regnames[given & 0xf]);
+  if ((given & 0xff0) != 0)
+    {
+      if ((given & 0x10) == 0)
+	{
+	  int amount = (given & 0xf80) >> 7;
+	  int shift = (given & 0x60) >> 5;
+	  if (amount == 0)
+	    {
+	      if (shift == 3)
+		{
+		  func (stream, ", rrx");
+		  return;
+		}
+	      amount = 32;
+	    }
+	  func (stream, ", %s #%d", arm_shift[shift], amount);
+	}
+      else
+	func (stream, ", %s %s", arm_shift[(given & 0x60) >> 5],
+	      arm_regnames[(given & 0xf00) >> 8]);
+    }
+}
+
+/* Print one instruction from PC on INFO->STREAM.
+   Return the size of the instruction (always 4 on ARM). */
+
+static int
+print_insn_arm (pc, info, given)
+     bfd_vma         pc;
+     struct disassemble_info *info;
+     long given;
+{
+  struct arm_opcode *  insn;
+  void *               stream = info->stream;
+  fprintf_ftype        func   = info->fprintf_func;
+
+  for (insn = arm_opcodes; insn->assembler; insn++)
+    {
+      if ((given & insn->mask) == insn->value)
+	{
+	  char * c;
+	  
+	  for (c = insn->assembler; *c; c++)
+	    {
+	      if (*c == '%')
+		{
+		  switch (*++c)
+		    {
+		    case '%':
+		      func (stream, "%%");
+		      break;
+
+		    case 'a':
+		      if (((given & 0x000f0000) == 0x000f0000)
+			  && ((given & 0x02000000) == 0))
+			{
+			  int offset = given & 0xfff;
+			  
+			  func (stream, "[pc");
+ 
+			  if (given & 0x01000000)
+			    {
+			      if ((given & 0x00800000) == 0)
+				offset = - offset;
+			  
+			      /* pre-indexed */
+			      func (stream, ", #%x]", offset);
+
+			      offset += pc + 8;
+
+			      /* Cope with the possibility of write-back being used.
+				 Probably a very dangerous thing for the programmer
+				 to do, but who are we to argue ?  */
+			      if (given & 0x00200000)
+				func (stream, "!");
+			    }
+			  else
+			    {
+			      /* post indexed */
+			      func (stream, "], #%x", offset);
+
+			      offset = pc + 8;  /* ie ignore the offset */
+			    }
+			  
+			  func (stream, "\t; ");
+			  info->print_address_func (offset, info);
+			}
+		      else
+			{
+			  func (stream, "[%s", 
+				arm_regnames[(given >> 16) & 0xf]);
+			  if ((given & 0x01000000) != 0)
+			    {
+			      if ((given & 0x02000000) == 0)
+				{
+				  int offset = given & 0xfff;
+				  if (offset)
+				    func (stream, ", %s#%d",
+					  (((given & 0x00800000) == 0)
+					   ? "-" : ""), offset);
+				}
+			      else
+				{
+				  func (stream, ", %s",
+					(((given & 0x00800000) == 0)
+					 ? "-" : ""));
+				  arm_decode_shift (given, func, stream);
+				}
+
+			      func (stream, "]%s", 
+				    ((given & 0x00200000) != 0) ? "!" : "");
+			    }
+			  else
+			    {
+			      if ((given & 0x02000000) == 0)
+				{
+				  int offset = given & 0xfff;
+				  if (offset)
+				    func (stream, "], %s#%d",
+					  (((given & 0x00800000) == 0)
+					   ? "-" : ""), offset);
+				  else 
+				    func (stream, "]");
+				}
+			      else
+				{
+				  func (stream, "], %s",
+					(((given & 0x00800000) == 0) 
+					 ? "-" : ""));
+				  arm_decode_shift (given, func, stream);
+				}
+			    }
+			}
+		      break;
+
+		    case 's':
+                      if ((given & 0x004f0000) == 0x004f0000)
+			{
+                          /* PC relative with immediate offset */
+			  int offset = ((given & 0xf00) >> 4) | (given & 0xf);
+			  if ((given & 0x00800000) == 0)
+			    offset = -offset;
+			  (*info->print_address_func)
+			    (offset + pc + 8, info);
+			}
+		      else
+			{
+			  func (stream, "[%s", 
+				arm_regnames[(given >> 16) & 0xf]);
+			  if ((given & 0x01000000) != 0)
+			    {
+                              /* pre-indexed */
+			      if ((given & 0x00400000) == 0x00400000)
+				{
+                                  /* immediate */
+                                  int offset = ((given & 0xf00) >> 4) | (given & 0xf);
+				  if (offset)
+				    func (stream, ", %s#%d",
+					  (((given & 0x00800000) == 0)
+					   ? "-" : ""), offset);
+				}
+			      else
+				{
+                                  /* register */
+				  func (stream, ", %s%s",
+					(((given & 0x00800000) == 0)
+					 ? "-" : ""),
+                                        arm_regnames[given & 0xf]);
+				}
+
+			      func (stream, "]%s", 
+				    ((given & 0x00200000) != 0) ? "!" : "");
+			    }
+			  else
+			    {
+                              /* post-indexed */
+			      if ((given & 0x00400000) == 0x00400000)
+				{
+                                  /* immediate */
+                                  int offset = ((given & 0xf00) >> 4) | (given & 0xf);
+				  if (offset)
+				    func (stream, "], %s#%d",
+					  (((given & 0x00800000) == 0)
+					   ? "-" : ""), offset);
+				  else 
+				    func (stream, "]");
+				}
+			      else
+				{
+                                  /* register */
+				  func (stream, "], %s%s",
+					(((given & 0x00800000) == 0)
+					 ? "-" : ""),
+                                        arm_regnames[given & 0xf]);
+				}
+			    }
+			}
+		      break;
+			  
+		    case 'b':
+		      (*info->print_address_func)
+			(BDISP (given) * 4 + pc + 8, info);
+		      break;
+
+		    case 'c':
+		      func (stream, "%s",
+			    arm_conditional [(given >> 28) & 0xf]);
+		      break;
+
+		    case 'm':
+		      {
+			int started = 0;
+			int reg;
+
+			func (stream, "{");
+			for (reg = 0; reg < 16; reg++)
+			  if ((given & (1 << reg)) != 0)
+			    {
+			      if (started)
+				func (stream, ", ");
+			      started = 1;
+			      func (stream, "%s", arm_regnames[reg]);
+			    }
+			func (stream, "}");
+		      }
+		      break;
+
+		    case 'o':
+		      if ((given & 0x02000000) != 0)
+			{
+			  int rotate = (given & 0xf00) >> 7;
+			  int immed = (given & 0xff);
+			  func (stream, "#%d",
+				((immed << (32 - rotate))
+				 | (immed >> rotate)) & 0xffffffff);
+			}
+		      else
+			arm_decode_shift (given, func, stream);
+		      break;
+
+		    case 'p':
+		      if ((given & 0x0000f000) == 0x0000f000)
+			func (stream, "p");
+		      break;
+
+		    case 't':
+		      if ((given & 0x01200000) == 0x00200000)
+			func (stream, "t");
+		      break;
+
+		    case 'h':
+		      if ((given & 0x00000020) == 0x00000020)
+			func (stream, "h");
+                      else
+                        func (stream, "b");
+		      break;
+
+		    case 'A':
+		      func (stream, "[%s", arm_regnames [(given >> 16) & 0xf]);
+		      if ((given & 0x01000000) != 0)
+			{
+			  int offset = given & 0xff;
+			  if (offset)
+			    func (stream, ", %s#%d]%s",
+				  ((given & 0x00800000) == 0 ? "-" : ""),
+				  offset * 4,
+				  ((given & 0x00200000) != 0 ? "!" : ""));
+			  else
+			    func (stream, "]");
+			}
+		      else
+			{
+			  int offset = given & 0xff;
+			  if (offset)
+			    func (stream, "], %s#%d",
+				  ((given & 0x00800000) == 0 ? "-" : ""),
+				  offset * 4);
+			  else
+			    func (stream, "]");
+			}
+		      break;
+
+		    case 'C':
+		      switch (given & 0x00090000)
+			{
+			default:
+			  func (stream, "_???");
+			  break;
+			case 0x90000:
+			  func (stream, "_all");
+			  break;
+			case 0x10000:
+			  func (stream, "_ctl");
+			  break;
+			case 0x80000:
+			  func (stream, "_flg");
+			  break;
+			}
+		      break;
+
+		    case 'F':
+		      switch (given & 0x00408000)
+			{
+			case 0:
+			  func (stream, "4");
+			  break;
+			case 0x8000:
+			  func (stream, "1");
+			  break;
+			case 0x00400000:
+			  func (stream, "2");
+			  break;
+			default:
+			  func (stream, "3");
+			}
+		      break;
+			
+		    case 'P':
+		      switch (given & 0x00080080)
+			{
+			case 0:
+			  func (stream, "s");
+			  break;
+			case 0x80:
+			  func (stream, "d");
+			  break;
+			case 0x00080000:
+			  func (stream, "e");
+			  break;
+			default:
+			  func (stream, _("<illegal precision>"));
+			  break;
+			}
+		      break;
+		    case 'Q':
+		      switch (given & 0x00408000)
+			{
+			case 0:
+			  func (stream, "s");
+			  break;
+			case 0x8000:
+			  func (stream, "d");
+			  break;
+			case 0x00400000:
+			  func (stream, "e");
+			  break;
+			default:
+			  func (stream, "p");
+			  break;
+			}
+		      break;
+		    case 'R':
+		      switch (given & 0x60)
+			{
+			case 0:
+			  break;
+			case 0x20:
+			  func (stream, "p");
+			  break;
+			case 0x40:
+			  func (stream, "m");
+			  break;
+			default:
+			  func (stream, "z");
+			  break;
+			}
+		      break;
+
+		    case '0': case '1': case '2': case '3': case '4': 
+		    case '5': case '6': case '7': case '8': case '9':
+		      {
+			int bitstart = *c++ - '0';
+			int bitend = 0;
+			while (*c >= '0' && *c <= '9')
+			  bitstart = (bitstart * 10) + *c++ - '0';
+
+			switch (*c)
+			  {
+			  case '-':
+			    c++;
+			    while (*c >= '0' && *c <= '9')
+			      bitend = (bitend * 10) + *c++ - '0';
+			    if (!bitend)
+			      abort ();
+			    switch (*c)
+			      {
+			      case 'r':
+				{
+				  long reg;
+				  reg = given >> bitstart;
+				  reg &= (2 << (bitend - bitstart)) - 1;
+				  func (stream, "%s", arm_regnames[reg]);
+				}
+				break;
+			      case 'd':
+				{
+				  long reg;
+				  reg = given >> bitstart;
+				  reg &= (2 << (bitend - bitstart)) - 1;
+				  func (stream, "%d", reg);
+				}
+				break;
+			      case 'x':
+				{
+				  long reg;
+				  reg = given >> bitstart;
+				  reg &= (2 << (bitend - bitstart)) - 1;
+				  func (stream, "0x%08x", reg);
+				}
+				break;
+			      case 'f':
+				{
+				  long reg;
+				  reg = given >> bitstart;
+				  reg &= (2 << (bitend - bitstart)) - 1;
+				  if (reg > 7)
+				    func (stream, "#%s",
+					  arm_fp_const[reg & 7]);
+				  else
+				    func (stream, "f%d", reg);
+				}
+				break;
+			      default:
+				abort ();
+			      }
+			    break;
+			  case '`':
+			    c++;
+			    if ((given & (1 << bitstart)) == 0)
+			      func (stream, "%c", *c);
+			    break;
+			  case '\'':
+			    c++;
+			    if ((given & (1 << bitstart)) != 0)
+			      func (stream, "%c", *c);
+			    break;
+			  case '?':
+			    ++c;
+			    if ((given & (1 << bitstart)) != 0)
+			      func (stream, "%c", *c++);
+			    else
+			      func (stream, "%c", *++c);
+			    break;
+			  default:
+			    abort ();
+			  }
+			break;
+
+		      default:
+			abort ();
+		      }
+		    }
+		}
+	      else
+		func (stream, "%c", *c);
+	    }
+	  return 4;
+	}
+    }
+  abort ();
+}
+
+/* Print one instruction from PC on INFO->STREAM.
+   Return the size of the instruction. */
+
+static int
+print_insn_thumb (pc, info, given)
+     bfd_vma         pc;
+     struct disassemble_info *info;
+     long given;
+{
+  struct thumb_opcode *insn;
+  void *stream = info->stream;
+  fprintf_ftype func = info->fprintf_func;
+
+  for (insn = thumb_opcodes; insn->assembler; insn++)
+    {
+      if ((given & insn->mask) == insn->value)
+        {
+          char *c = insn->assembler;
+
+          /* Special processing for Thumb 2 instruction BL sequence: */
+          if (!*c) /* check for empty (not NULL) assembler string */
+            {
+	      info->bytes_per_chunk = 4;
+	      info->bytes_per_line  = 4;
+	      
+              func (stream, "%04x\tbl\t", given & 0xffff);
+              (*info->print_address_func)
+                (BDISP23 (given) * 2 + pc + 4, info);
+              return 4;
+            }
+          else
+            {
+	      info->bytes_per_chunk = 2;
+	      info->bytes_per_line  = 4;
+	  	      
+              given &= 0xffff;
+              func (stream, "%04x\t", given);
+              for (; *c; c++)
+                {
+                  if (*c == '%')
+                    {
+                      int domaskpc = 0;
+                      int domasklr = 0;
+                      switch (*++c)
+                        {
+                        case '%':
+                          func (stream, "%%");
+                          break;
+
+                        case 'S':
+                          {
+                            long reg;
+                            reg = (given >> 3) & 0x7;
+                            if (given & (1 << 6))
+                              reg += 8;
+                            func (stream, "%s", arm_regnames[reg]);
+                          }
+                          break;
+
+                        case 'D':
+                          {
+                            long reg;
+                            reg = given & 0x7;
+                            if (given & (1 << 7))
+                             reg += 8;
+                            func (stream, "%s", arm_regnames[reg]);
+                          }
+                          break;
+
+                        case 'T':
+                          func (stream, "%s",
+                                arm_conditional [(given >> 8) & 0xf]);
+                          break;
+
+                        case 'N':
+                          if (given & (1 << 8))
+                            domasklr = 1;
+                          /* fall through */
+                        case 'O':
+                          if (*c == 'O' && (given & (1 << 8)))
+                            domaskpc = 1;
+                          /* fall through */
+                        case 'M':
+                          {
+                            int started = 0;
+                            int reg;
+                            func (stream, "{");
+                            /* It would be nice if we could spot
+                               ranges, and generate the rS-rE format: */
+                            for (reg = 0; (reg < 8); reg++)
+                              if ((given & (1 << reg)) != 0)
+                                {
+                                  if (started)
+                                    func (stream, ", ");
+                                  started = 1;
+                                  func (stream, "%s", arm_regnames[reg]);
+                                }
+
+                            if (domasklr)
+                              {
+                                if (started)
+                                  func (stream, ", ");
+                                started = 1;
+                                func (stream, "lr");
+                              }
+
+                            if (domaskpc)
+                              {
+                                if (started)
+                                  func (stream, ", ");
+                                func (stream, "pc");
+                              }
+
+                            func (stream, "}");
+                          }
+                          break;
+
+
+                        case '0': case '1': case '2': case '3': case '4': 
+                        case '5': case '6': case '7': case '8': case '9':
+                          {
+                            int bitstart = *c++ - '0';
+                            int bitend = 0;
+                            while (*c >= '0' && *c <= '9')
+                              bitstart = (bitstart * 10) + *c++ - '0';
+
+                            switch (*c)
+                              {
+                              case '-':
+                                {
+                                  long reg;
+                                  c++;
+                                  while (*c >= '0' && *c <= '9')
+                                    bitend = (bitend * 10) + *c++ - '0';
+                                  if (!bitend)
+                                    abort ();
+                                  reg = given >> bitstart;
+                                  reg &= (2 << (bitend - bitstart)) - 1;
+                                  switch (*c)
+                                    {
+                                    case 'r':
+                                      func (stream, "%s", arm_regnames[reg]);
+                                      break;
+
+                                    case 'd':
+                                      func (stream, "%d", reg);
+                                      break;
+
+                                    case 'H':
+                                      func (stream, "%d", reg << 1);
+                                      break;
+
+                                    case 'W':
+                                      func (stream, "%d", reg << 2);
+                                      break;
+
+                                    case 'a':
+				      /* PC-relative address -- the bottom two
+					 bits of the address are dropped before
+					 the calculation.  */
+                                      info->print_address_func
+					(((pc + 4) & ~3) + (reg << 2), info);
+                                      break;
+
+                                    case 'x':
+                                      func (stream, "0x%04x", reg);
+                                      break;
+
+                                    case 'I':
+                                      reg = ((reg ^ (1 << bitend)) - (1 << bitend));
+                                      func (stream, "%d", reg);
+                                      break;
+
+                                    case 'B':
+                                      reg = ((reg ^ (1 << bitend)) - (1 << bitend));
+                                      (*info->print_address_func)
+                                        (reg * 2 + pc + 4, info);
+                                      break;
+
+                                    default:
+                                      abort();
+                                    }
+                                }
+                                break;
+
+                              case '\'':
+                                c++;
+                                if ((given & (1 << bitstart)) != 0)
+                                  func (stream, "%c", *c);
+                                break;
+
+                              case '?':
+                                ++c;
+                                if ((given & (1 << bitstart)) != 0)
+                                  func (stream, "%c", *c++);
+                                else
+                                  func (stream, "%c", *++c);
+                                break;
+
+                              default:
+                                 abort();
+                              }
+                          }
+                          break;
+
+                        default:
+                          abort ();
+                        }
+                    }
+                  else
+                    func (stream, "%c", *c);
+                }
+             }
+          return 2;
+       }
+    }
+
+  /* no match */
+  abort ();
+}
+
+/* NOTE: There are no checks in these routines that the relevant number of data bytes exist */
+
+int
+print_insn_big_arm (pc, info)
+     bfd_vma pc;
+     struct disassemble_info *info;
+{
+  unsigned char      b[4];
+  long               given;
+  int                status;
+  coff_symbol_type   *cs;
+  elf_symbol_type    *es;
+  int                is_thumb;
+  
+  is_thumb = false;
+  if (info->symbols != NULL)
+    {
+    if (bfd_asymbol_flavour (*info->symbols) == bfd_target_coff_flavour)
+     {
+       cs = coffsymbol (*info->symbols);
+       is_thumb = (cs->native->u.syment.n_sclass == C_THUMBEXT
+                   || cs->native->u.syment.n_sclass == C_THUMBSTAT
+                   || cs->native->u.syment.n_sclass == C_THUMBLABEL
+                   || cs->native->u.syment.n_sclass == C_THUMBEXTFUNC
+                   || cs->native->u.syment.n_sclass == C_THUMBSTATFUNC);
+  
+     }
+    else if (bfd_asymbol_flavour (*info->symbols) == bfd_target_elf_flavour)
+     {
+       es = *(elf_symbol_type **)(info->symbols);
+       is_thumb = ELF_ST_TYPE (es->internal_elf_sym.st_info) ==
+	 STT_ARM_TFUNC;
+      }
+   }
+
+  info->bytes_per_chunk = 4;
+  info->display_endian = BFD_ENDIAN_BIG;
+
+  /* Always fetch word aligned values.  */
+  
+  status = (*info->read_memory_func) (pc & ~ 0x3, (bfd_byte *) &b[0], 4, info);
+  if (status != 0)
+    {
+      (*info->memory_error_func) (status, pc, info);
+      return -1;
+    }
+
+  if (is_thumb)
+    {
+      if (pc & 0x2)
+	{
+	  given = (b[2] << 8) | b[3];
+
+	  status = info->read_memory_func ((pc + 4) & ~ 0x3, (bfd_byte *) b, 4, info);
+	  if (status != 0)
+	    {
+	      info->memory_error_func (status, pc + 4, info);
+	      return -1;
+	    }
+	  
+	  given |= (b[0] << 24) | (b[1] << 16);
+	}
+      else
+	{
+	  given = (b[0] << 8) | b[1] | (b[2] << 24) | (b[3] << 16);
+	}
+    }
+  else
+    {
+      given = (b[0] << 24) | (b[1] << 16) | (b[2] << 8) | (b[3]);
+    }
+
+  if (is_thumb)
+    {
+      status = print_insn_thumb (pc, info, given);
+    }
+  else
+    {
+      status = print_insn_arm (pc, info, given);
+    }
+
+  return status;
+}
+
+int
+print_insn_little_arm (pc, info)
+     bfd_vma pc;
+     struct disassemble_info * info;
+{
+  unsigned char      b[4];
+  long               given;
+  int                status;
+  coff_symbol_type   *cs;
+  elf_symbol_type    *es;
+  int                is_thumb;
+
+  is_thumb = false;
+  if (info->symbols != NULL)
+    {
+    if (bfd_asymbol_flavour (*info->symbols) == bfd_target_coff_flavour)
+     {
+       cs = coffsymbol (*info->symbols);
+       is_thumb = (cs->native->u.syment.n_sclass == C_THUMBEXT
+                   || cs->native->u.syment.n_sclass == C_THUMBSTAT
+                   || cs->native->u.syment.n_sclass == C_THUMBLABEL
+                   || cs->native->u.syment.n_sclass == C_THUMBEXTFUNC
+                   || cs->native->u.syment.n_sclass == C_THUMBSTATFUNC);
+  
+     }
+    else if (bfd_asymbol_flavour (*info->symbols) == bfd_target_elf_flavour)
+     {
+       es = *(elf_symbol_type **)(info->symbols);
+       is_thumb = ELF_ST_TYPE (es->internal_elf_sym.st_info) ==
+	 STT_ARM_TFUNC;
+      }
+   }
+
+  info->bytes_per_chunk = 4;
+  info->display_endian = BFD_ENDIAN_LITTLE;
+
+  status = (*info->read_memory_func) (pc, (bfd_byte *) &b[0], 4, info);
+  if (status != 0 && is_thumb)
+    {
+      info->bytes_per_chunk = 2;
+
+      status = info->read_memory_func (pc, (bfd_byte *) b, 2, info);
+      b[3] = b[2] = 0;
+    }
+  if (status != 0)
+    {
+      (*info->memory_error_func) (status, pc, info);
+      return -1;
+    }
+
+  given = (b[0]) | (b[1] << 8) | (b[2] << 16) | (b[3] << 24);
+
+  if (is_thumb)
+    {
+      status = print_insn_thumb (pc, info, given);
+    }
+  else
+    {
+      status = print_insn_arm (pc, info, given);
+    }
+
+  return status;
+}