From 6bb95a0ff8ead058dbfff87384fd379f6f8aeb05 Mon Sep 17 00:00:00 2001
From: Dave Brolley <brolley@redhat.com>
Date: Mon, 28 Aug 2000 18:17:54 +0000
Subject: 2000-08-28  Dave Brolley  <brolley@redhat.com>

	* cgen-ibld.in (cgen_put_insn_int_value): New function.
	(insert_normal): Allow for non-zero word_offset with CGEN_INT_INSN_P.
	(insert_insn_normal): Use cgen_put_insn_int_value with CGEN_INT_INSN_P.
	(extract_normal): Allow for non-zero word_offset with CGEN_INT_INSN_P.
	* cgen-dis.in (read_insn): New static function.
	(print_insn): Use read_insn to read the insn into the buffer and set
	up for disassembly.
	(print_insn): in CGEN_INT_INSN_P, make sure that the entire insn is
	in the buffer.
	* fr30-asm.c: Regenerated.
	* fr30-desc.c: Regenerated.
	* fr30-desc.h Regenerated.
	* fr30-dis.c: Regenerated.
	* fr30-ibld.c: Regenerated.
	* fr30-opc.c: Regenerated.
	* fr30-opc.h Regenerated.
	* m32r-asm.c: Regenerated.
	* m32r-desc.c: Regenerated.
	* m32r-desc.h Regenerated.
	* m32r-dis.c: Regenerated.
	* m32r-ibld.c: Regenerated.
	* m32r-opc.c: Regenerated.
---
 opcodes/cgen-ibld.in | 44 ++++++++++++++++++++++++++++++++++++++------
 1 file changed, 38 insertions(+), 6 deletions(-)

(limited to 'opcodes/cgen-ibld.in')

diff --git a/opcodes/cgen-ibld.in b/opcodes/cgen-ibld.in
index 6394fe0..5103293 100644
--- a/opcodes/cgen-ibld.in
+++ b/opcodes/cgen-ibld.in
@@ -57,6 +57,9 @@ static int extract_normal
 static int extract_insn_normal
      PARAMS ((CGEN_CPU_DESC, const CGEN_INSN *, CGEN_EXTRACT_INFO *,
 	      CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma));
+static void put_insn_int_value
+     PARAMS ((CGEN_CPU_DESC, CGEN_INSN_BYTES_PTR, int, int, CGEN_INSN_INT));
+
 
 /* Operand insertion.  */
 
@@ -183,9 +186,11 @@ insert_normal (cd, value, attrs, word_offset, start, length, word_length,
   if (length == 0)
     return NULL;
 
+#if 0
   if (CGEN_INT_INSN_P
       && word_offset != 0)
     abort ();
+#endif
 
   if (word_length > 32)
     abort ();
@@ -237,9 +242,9 @@ insert_normal (cd, value, attrs, word_offset, start, length, word_length,
     int shift;
 
     if (CGEN_INSN_LSB0_P)
-      shift = (start + 1) - length;
+      shift = (word_offset + start + 1) - length;
     else
-      shift = word_length - (start + length);
+      shift = total_length - (word_offset + start + length);
     *buffer = (*buffer & ~(mask << shift)) | ((value & mask) << shift);
   }
 
@@ -283,7 +288,8 @@ insert_insn_normal (cd, insn, fields, buffer, pc)
 
 #if CGEN_INT_INSN_P
 
-  *buffer = value;
+  put_insn_int_value (cd, buffer, cd->base_insn_bitsize,
+		      CGEN_FIELDS_BITSIZE (fields), value);
 
 #else
 
@@ -313,6 +319,30 @@ insert_insn_normal (cd, insn, fields, buffer, pc)
 
   return NULL;
 }
+
+/* Cover function to store an insn value into an integral insn.  Must go here
+ because it needs <prefix>-desc.h for CGEN_INT_INSN_P.  */
+
+static void
+put_insn_int_value (cd, buf, length, insn_length, value)
+     CGEN_CPU_DESC cd;
+     CGEN_INSN_BYTES_PTR buf;
+     int length;
+     int insn_length;
+     CGEN_INSN_INT value;
+{
+  /* For architectures with insns smaller than the base-insn-bitsize,
+     length may be too big.  */
+  if (length > insn_length)
+    *buf = value;
+  else
+    {
+      int shift = insn_length - length;
+      /* Written this way to avoid undefined behaviour.  */
+      CGEN_INSN_INT mask = (((1L << (length - 1)) - 1) << 1) | 1;
+      *buf = (*buf & ~(mask << shift)) | ((value & mask) << shift);
+    }
+}
 
 /* Operand extraction.  */
 
@@ -469,9 +499,11 @@ extract_normal (cd, ex_info, insn_value, attrs, word_offset, start, length,
       return 1;
     }
 
+#if 0
   if (CGEN_INT_INSN_P
       && word_offset != 0)
     abort ();
+#endif
 
   if (word_length > 32)
     abort ();
@@ -487,15 +519,15 @@ extract_normal (cd, ex_info, insn_value, attrs, word_offset, start, length,
 
   /* Does the value reside in INSN_VALUE?  */
 
-  if (word_offset == 0)
+  if (CGEN_INT_INSN_P || word_offset == 0)
     {
       /* Written this way to avoid undefined behaviour.  */
       CGEN_INSN_INT mask = (((1L << (length - 1)) - 1) << 1) | 1;
 
       if (CGEN_INSN_LSB0_P)
-	value = insn_value >> ((start + 1) - length);
+	value = insn_value >> ((word_offset + start + 1) - length);
       else
-	value = insn_value >> (word_length - (start + length));
+	value = insn_value >> (total_length - ( word_offset + start + length));
       value &= mask;
       /* sign extend? */
       if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED)
-- 
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