From f5d7f6fb5384776235305c363bab41c8c261779e Mon Sep 17 00:00:00 2001
From: Jeff Law <law@redhat.com>
Date: Fri, 31 Jan 1997 22:23:10 +0000
Subject: [PATCH]         * config/tc-mn10200.c (md_relax_table): Add entries
 to allow         jmp -> bra relaxing.         (md_convert_frag): Handle
 jmp->bra relaxing.         (md_assemble): Handle jmp->bra relaxing.        
 (md_estimate_size_before_relax): Likewise.

---
 gas/ChangeLog           |  8 ++++++
 gas/config/tc-mn10200.c | 76 ++++++++++++++++++++++++++++++++++++-------------
 2 files changed, 64 insertions(+), 20 deletions(-)

diff --git a/gas/ChangeLog b/gas/ChangeLog
index 6c5982b..c917491 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,11 @@
+Fri Jan 31 15:21:02 1997  Jeffrey A Law  (law@cygnus.com)
+
+	* config/tc-mn10200.c (md_relax_table): Add entries to allow
+	jmp -> bra relaxing.
+	(md_convert_frag): Handle jmp->bra relaxing.
+	(md_assemble): Handle jmp->bra relaxing.
+	(md_estimate_size_before_relax): Likewise.
+
 Fri Jan 31 13:15:05 1997  Alan Modra  <alan@spri.levels.unisa.edu.au>
 
 	* config/tc-i386.c (i386_align_code): Add comments explaining the
diff --git a/gas/config/tc-mn10200.c b/gas/config/tc-mn10200.c
index 3046a29..2fd1784 100644
--- a/gas/config/tc-mn10200.c
+++ b/gas/config/tc-mn10200.c
@@ -62,9 +62,13 @@ const relax_typeS md_relax_table[] = {
   {0x7f, -0x80, 3, 4},
   {0x7fff, -0x8000, 6, 5},
   {0x7fffff, -0x8000000, 8, 0},
-  /* jmp/jsr relaxing, could have a bra variant too! */
+  /* jsr relaxing */
   {0x7fff, -0x8000, 3, 7},
   {0x7fffff, -0x8000000, 5, 0},
+  /* jmp relaxing */
+  {0x7f, -0x80, 2, 9},
+  {0x7fff, -0x8000, 3, 10},
+  {0x7fffff, -0x8000000, 5, 0},
 
 };
 /* local functions */
@@ -667,20 +671,37 @@ md_convert_frag (abfd, sec, fragP)
   else if (fragP->fr_subtype == 7)
     {
       int offset = fragP->fr_fix;
-      int opcode = fragP->fr_literal[offset] & 0xff;
+      fragP->fr_literal[offset] = 0xf4;
+      fragP->fr_literal[offset + 1] = 0xe1;
 
-      if (opcode == 0xfc)
-	{
-	  fragP->fr_literal[offset] = 0xf4;
-	  fragP->fr_literal[offset + 1] = 0xe0;
-	}
-      else if (opcode == 0xfd)
-	{
-	  fragP->fr_literal[offset] = 0xf4;
-	  fragP->fr_literal[offset + 1] = 0xe1;
-	}
-      else
-	abort ();
+      fix_new (fragP, fragP->fr_fix + 2, 4, fragP->fr_symbol,
+	       fragP->fr_offset + 2, 1, BFD_RELOC_24_PCREL);
+      fragP->fr_var = 0;
+      fragP->fr_fix += 5;
+    }
+  else if (fragP->fr_subtype == 8)
+    {
+      fragP->fr_literal[fragP->fr_fix] = 0xea;
+      fix_new (fragP, fragP->fr_fix + 1, 1, fragP->fr_symbol,
+	       fragP->fr_offset + 1, 1, BFD_RELOC_8_PCREL);
+      fragP->fr_var = 0;
+      fragP->fr_fix += 2;
+    }
+  else if (fragP->fr_subtype == 9)
+    {
+      int offset = fragP->fr_fix;
+      fragP->fr_literal[offset] = 0xfc;
+
+      fix_new (fragP, fragP->fr_fix + 1, 4, fragP->fr_symbol,
+	       fragP->fr_offset + 1, 1, BFD_RELOC_16_PCREL);
+      fragP->fr_var = 0;
+      fragP->fr_fix += 3;
+    }
+  else if (fragP->fr_subtype == 10)
+    {
+      int offset = fragP->fr_fix;
+      fragP->fr_literal[offset] = 0xf4;
+      fragP->fr_literal[offset + 1] = 0xe0;
 
       fix_new (fragP, fragP->fr_fix + 2, 4, fragP->fr_symbol,
 	       fragP->fr_offset + 2, 1, BFD_RELOC_24_PCREL);
@@ -1019,13 +1040,19 @@ keep_going:
     {
       int type;
 
-      if (size == 2)
+      /* bCC */
+      if (size == 2 && opcode->opcode != 0xfc0000)
 	type = 0;
-      else if (size == 3
-	       && opcode->opcode != 0xfd0000 && opcode->opcode != 0xfc0000)
-	type = 3;
-      else
+      /* jsr */
+      else if (size == 3 && opcode->opcode == 0xfd0000)
 	type = 6;
+      /* jmp */
+      else if (size == 3 && opcode->opcode == 0xfc0000)
+	type = 8;
+      /* bCCx */
+      else
+	type = 3;
+
       f = frag_var (rs_machine_dependent, 8, 8 - size, type,
 		    fixups[0].exp.X_add_symbol,
 		    fixups[0].exp.X_add_number,
@@ -1208,8 +1235,17 @@ md_estimate_size_before_relax (fragp, seg)
 	  fragp->fr_subtype = 7;
 	  return 5;
 	}
+      return 3;
+    }
+  if (fragp->fr_subtype == 8)
+    {
+      if (!S_IS_DEFINED (fragp->fr_symbol))
+	{
+	  fragp->fr_subtype = 10;
+	  return 5;
+	}
+      return 2;
     }
-  return 3;
 } 
 
 long
-- 
2.7.4