From c363f73dff020bf396c302f794ec20d142ca71e5 Mon Sep 17 00:00:00 2001
From: Nick Clifton <nickc@redhat.com>
Date: Sat, 9 Dec 2000 23:20:59 +0000
Subject: Prevent re-read of instruction from wrong address.

---
 opcodes/m32r-dis.c | 68 +++++++++++++++++++++++++++---------------------------
 1 file changed, 34 insertions(+), 34 deletions(-)

(limited to 'opcodes/m32r-dis.c')

diff --git a/opcodes/m32r-dis.c b/opcodes/m32r-dis.c
index 9b0397f3b7c..ed99320f3c3 100644
--- a/opcodes/m32r-dis.c
+++ b/opcodes/m32r-dis.c
@@ -68,12 +68,12 @@ do { \
 
 static void
 print_hash (cd, dis_info, value, attrs, pc, length)
-     CGEN_CPU_DESC cd;
+     CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
      PTR dis_info;
-     long value;
-     unsigned int attrs;
-     bfd_vma pc;
-     int length;
+     long value ATTRIBUTE_UNUSED;
+     unsigned int attrs ATTRIBUTE_UNUSED;
+     bfd_vma pc ATTRIBUTE_UNUSED;
+     int length ATTRIBUTE_UNUSED;
 {
   disassemble_info *info = (disassemble_info *) dis_info;
   (*info->fprintf_func) (info->stream, "#");
@@ -156,7 +156,7 @@ m32r_cgen_print_operand (cd, opindex, xinfo, fields, attrs, pc, length)
      int opindex;
      PTR xinfo;
      CGEN_FIELDS *fields;
-     void const *attrs;
+     void const *attrs ATTRIBUTE_UNUSED;
      bfd_vma pc;
      int length;
 {
@@ -263,21 +263,12 @@ m32r_cgen_init_dis (cd)
 
 static void
 print_normal (cd, dis_info, value, attrs, pc, length)
-#ifdef CGEN_PRINT_NORMAL
-     CGEN_CPU_DESC cd;
-#else
      CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
-#endif
      PTR dis_info;
      long value;
      unsigned int attrs;
-#ifdef CGEN_PRINT_NORMAL
-     bfd_vma pc;
-     int length;
-#else
      bfd_vma pc ATTRIBUTE_UNUSED;
      int length ATTRIBUTE_UNUSED;
-#endif
 {
   disassemble_info *info = (disassemble_info *) dis_info;
 
@@ -298,21 +289,12 @@ print_normal (cd, dis_info, value, attrs, pc, length)
 
 static void
 print_address (cd, dis_info, value, attrs, pc, length)
-#ifdef CGEN_PRINT_NORMAL
-     CGEN_CPU_DESC cd;
-#else
      CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
-#endif
      PTR dis_info;
      bfd_vma value;
      unsigned int attrs;
-#ifdef CGEN_PRINT_NORMAL
-     bfd_vma pc;
-     int length;
-#else
      bfd_vma pc ATTRIBUTE_UNUSED;
      int length ATTRIBUTE_UNUSED;
-#endif
 {
   disassemble_info *info = (disassemble_info *) dis_info;
 
@@ -397,7 +379,7 @@ print_insn_normal (cd, dis_info, insn, fields, pc, length)
    Returns 0 if all is well, non-zero otherwise.  */
 static int
 read_insn (cd, pc, info, buf, buflen, ex_info, insn_value)
-     CGEN_CPU_DESC cd;
+     CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
      bfd_vma pc;
      disassemble_info *info;
      char *buf;
@@ -451,11 +433,30 @@ print_insn (cd, pc, info, buf, buflen)
   unsigned long insn_value;
   const CGEN_INSN_LIST *insn_list;
   CGEN_EXTRACT_INFO ex_info;
-
+#if 0
   int rc = read_insn (cd, pc, info, buf, buflen, & ex_info, & insn_value);
   if (rc != 0)
     return rc;
+#else
+  ex_info.dis_info = info;
+  ex_info.valid = (1 << buflen) - 1;
+  ex_info.insn_bytes = buf;
 
+  switch (buflen)
+    {
+    case 1:
+      insn_value = buf[0];
+      break;
+    case 2:
+      insn_value = info->endian == BFD_ENDIAN_BIG ? bfd_getb16 (buf) : bfd_getl16 (buf);
+      break;
+    case 4:
+      insn_value = info->endian == BFD_ENDIAN_BIG ? bfd_getb32 (buf) : bfd_getl32 (buf);
+      break;
+    default:
+      abort ();
+    }
+#endif
   /* The instructions are stored in hash lists.
      Pick the first one and keep trying until we find the right one.  */
 
@@ -486,9 +487,10 @@ print_insn (cd, pc, info, buf, buflen)
 	     machine insn and extracts the fields.  The second pass prints
 	     them.  */
 
-#if CGEN_INT_INSN_P
-	  /* Make sure the entire insn is loaded into insn_value.  */
-	  if (CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize)
+	  /* Make sure the entire insn is loaded into insn_value, if it
+	     can fit.  */
+	  if ((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize &&
+	      (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
 	    {
 	      unsigned long full_insn_value;
 	      int rc = read_insn (cd, pc, info, buf,
@@ -500,10 +502,8 @@ print_insn (cd, pc, info, buf, buflen)
 		(cd, insn, &ex_info, full_insn_value, &fields, pc);
 	    }
 	  else
-#endif
-
-	  length = CGEN_EXTRACT_FN (cd, insn)
-	    (cd, insn, &ex_info, insn_value, &fields, pc);
+	    length = CGEN_EXTRACT_FN (cd, insn)
+	      (cd, insn, &ex_info, insn_value, &fields, pc);
 	  /* length < 0 -> error */
 	  if (length < 0)
 	    return length;
@@ -527,7 +527,6 @@ print_insn (cd, pc, info, buf, buflen)
 
 #ifndef CGEN_PRINT_INSN
 #define CGEN_PRINT_INSN default_print_insn
-#endif
 
 static int
 default_print_insn (cd, pc, info)
@@ -549,6 +548,7 @@ default_print_insn (cd, pc, info)
 
   return print_insn (cd, pc, info, buf, cd->base_insn_bitsize / 8);
 }
+#endif
 
 /* Main entry point.
    Print one instruction from PC on INFO->STREAM.
-- 
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