From 502535cff728b070ac9d121cfb2394551b9cd73b Mon Sep 17 00:00:00 2001
From: Jeff Law <law@redhat.com>
Date: Sat, 31 Aug 1996 20:56:05 +0000
Subject: [PATCH]         * v850-dis.c (v850_reg_names): Define.        
 (v850_sreg_names, v850_cc_names): Likewise.         (disassemble): Very rough
 cut at printing operands (unformatted). One step at a time.

        * v850-opc.c (BOP_MASK): Fix.
        (v850_opcodes): Fix mask for jarl and jr.
Bugs exposed by disassembler testing.
---
 opcodes/ChangeLog  |  7 +++++++
 opcodes/v850-dis.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++
 opcodes/v850-opc.c |  6 +++---
 3 files changed, 62 insertions(+), 3 deletions(-)

diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog
index 9c3b14b3dc..758135fcee 100644
--- a/opcodes/ChangeLog
+++ b/opcodes/ChangeLog
@@ -1,6 +1,13 @@
 start-sanitize-v850
 Sat Aug 31 01:27:26 1996  Jeffrey A Law  (law@cygnus.com)
 
+	* v850-dis.c (v850_reg_names): Define.
+	(v850_sreg_names, v850_cc_names): Likewise.
+	(disassemble): Very rough cut at printing operands (unformatted).
+
+	* v850-opc.c (BOP_MASK): Fix.
+	(v850_opcodes): Fix mask for jarl and jr.
+
 	* v850-dis.c: New file.  Skeleton for disassembler support.
 	* Makefile.in Remove v850 references, they're not needed here
 	and they weren't being sanitized away.
diff --git a/opcodes/v850-dis.c b/opcodes/v850-dis.c
index 3ee3959e9d..413e5e9ac2 100644
--- a/opcodes/v850-dis.c
+++ b/opcodes/v850-dis.c
@@ -22,6 +22,23 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 #include "opcode/v850.h" 
 #include "dis-asm.h"
 
+static const char *const v850_reg_names[] =
+{ "r0", "r1", "r2", "sp", "gp", "r5", "r6", "r7", 
+  "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", 
+  "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", 
+  "r24", "r25", "r26", "r27", "r28", "r29", "ep", "r31" };
+
+static const char *const v850_sreg_names[] =
+{ "eipc", "eipsw", "fepc", "fepsw", "ecr", "psw", "sr6", "sr7", 
+  "sr8", "sr9", "sr10", "sr11", "sr12", "sr13", "sr14", "sr15", 
+  "sr16", "sr17", "sr18", "sr19", "sr20", "sr21", "sr22", "sr23", 
+  "sr24", "sr25", "sr26", "sr27", "sr28", "sr29", "sr30", "sr31" };
+
+static const char *const v850_cc_names[] =
+{ "v", "c/l", "z", "nh", "s/n", "t", "lt", "le", 
+  "nv", "nc/nl", "nz", "h", "ns/p", "sa", "lt", "ge", 
+  "le", "gt" };
+
 int 
 print_insn_v850 (memaddr, info)
      bfd_vma memaddr;
@@ -51,6 +68,7 @@ disassemble (insn, info)
      struct disassemble_info *info;
 {
   struct v850_opcode *op = (struct v850_opcode *)v850_opcodes;
+  const struct v850_operand *operand;
   int match = 0;
   /* If this is a two byte insn, then mask off the high bits. */
   if ((insn & 0x0600) != 0x0600)
@@ -61,8 +79,42 @@ disassemble (insn, info)
     {
       if ((op->mask & insn) == op->opcode)
 	{
+	  const unsigned char *opindex_ptr;
+
 	  match = 1;
 	  (*info->fprintf_func) (info->stream, "%s\t", op->name);
+
+	  /* Now print the operands.  */
+	  for (opindex_ptr = op->operands; *opindex_ptr != 0; opindex_ptr++)
+	    {
+	      unsigned long value;
+
+	      operand = &v850_operands[*opindex_ptr];
+
+	      if (operand->extract)
+		value = (operand->extract) (insn, 0);
+	      else
+		value = (insn >> operand->shift) & ((1 << operand->bits) - 1);
+
+	      if ((operand->flags & V850_OPERAND_SIGNED) != 0)
+		value = ((signed long)(value << (32 - operand->bits))
+			  >> (32 - operand->bits));
+	      if ((operand->flags & V850_OPERAND_REG) != 0)
+		(*info->fprintf_func) (info->stream, "%s",
+				      v850_reg_names[value]);
+	      else if ((operand->flags & V850_OPERAND_SRG) != 0)
+		(*info->fprintf_func) (info->stream, "%s",
+				      v850_sreg_names[value]);
+	      else if ((operand->flags & V850_OPERAND_CC) != 0)
+		(*info->fprintf_func) (info->stream, "%s",
+				      v850_cc_names[value]);
+	      else if ((operand->flags & V850_OPERAND_EP) != 0)
+		(*info->fprintf_func) (info->stream, "ep");
+	      else
+		(*info->fprintf_func) (info->stream, "%d", value);
+	    }
+
+	  /* All done. */
 	  break;
 	}
       op++;
diff --git a/opcodes/v850-opc.c b/opcodes/v850-opc.c
index a1c895393f..56d3f7c6bc 100644
--- a/opcodes/v850-opc.c
+++ b/opcodes/v850-opc.c
@@ -20,7 +20,7 @@ static long extract_d8_6 PARAMS ((unsigned long, int *));
 
 /* conditional branch opcode */
 #define BOP(x)		((0x0b << 7) | (x & 0x0f))
-#define BOP_MASK	((0x0b << 7) | 0x0f)
+#define BOP_MASK	((0x0f << 7) | 0x0f)
 
 /* one-word opcodes */
 #define one(x)		((unsigned int) (x))
@@ -247,8 +247,8 @@ const struct v850_opcode v850_opcodes[] = {
 { "bsa",	BOP(0xd),		BOP_MASK,	IF3, 2 },
 
 { "jmp",	one(0x0060),		one(0xffe0),	{ R1}, 2 },
-{ "jarl",	one(0x0780),		one(0xf83f),	{ D22, R2 }, 4 }, 
-{ "jr",		one(0x0780),		one(0xffe0),	{ D22 }, 4 },
+{ "jarl",	one(0x0780),		two(0x07c0,0x0001),{ D22, R2 }, 4 }, 
+{ "jr",		one(0x0780),		two(0xffc0,0x0001),{ D22 }, 4 },
 
 /* bit manipulation instructions */
 { "set1",	two(0x07c0,0x0000),	two(0xc7e0,0x0000),	{B3, D16, R1}, 4 },
-- 
2.34.1