From 6147b1f62b594c6ab29bde942cef6cb23f8eb7de Mon Sep 17 00:00:00 2001
From: Andrey Volkov <avolkov@transas.com>
Date: Fri, 17 May 2002 19:22:14 +0000
Subject: [PATCH] * compile.c: Add absented opcodes: LDC, STC, EEPMOV, TAS.

---
 sim/h8300/ChangeLog |   4 ++
 sim/h8300/compile.c | 111 +++++++++++++++++++++++++++++++++++++++++-----------
 2 files changed, 92 insertions(+), 23 deletions(-)

diff --git a/sim/h8300/ChangeLog b/sim/h8300/ChangeLog
index fab89be..8bda0a5 100644
--- a/sim/h8300/ChangeLog
+++ b/sim/h8300/ChangeLog
@@ -1,5 +1,9 @@
 2002-05-17  Andrey Volkov  (avolkov@transas.com)
 
+	* compile.c: Add absented opcodes: LDC, STC, EEPMOV, TAS.
+	
+2002-05-17  Andrey Volkov  (avolkov@transas.com)
+
 	* compile.c: Add support of EXR register
 	* inst.h: Ditto.
 	
diff --git a/sim/h8300/compile.c b/sim/h8300/compile.c
index 6007ace..4822bd0 100644
--- a/sim/h8300/compile.c
+++ b/sim/h8300/compile.c
@@ -942,6 +942,28 @@ sim_stop (sd)
   return 1;
 }
 
+#define R0_REGNUM	0
+#define R1_REGNUM	1
+#define R2_REGNUM	2
+#define R3_REGNUM	3
+#define R4_REGNUM	4
+#define R5_REGNUM	5
+#define R6_REGNUM	6
+#define R7_REGNUM	7
+
+#define SP_REGNUM       R7_REGNUM	/* Contains address of top of stack */
+#define FP_REGNUM       R6_REGNUM	/* Contains address of executing
+					 * stack frame */
+
+#define CCR_REGNUM      8	/* Contains processor status */
+#define PC_REGNUM       9	/* Contains program counter */
+
+#define CYCLE_REGNUM    10
+
+#define EXR_REGNUM	11
+#define INST_REGNUM     12
+#define TICK_REGNUM     13
+
 void
 sim_resume (sd, step, siggnal)
      SIM_DESC sd;
@@ -1115,6 +1137,37 @@ sim_resume (sd, step, siggnal)
 	  SET_L_REG (code->dst.reg, res);
 	  goto just_flags_log32;
 
+	case O (O_EEPMOV, SB):
+	case O (O_EEPMOV, SW):
+		 if(h8300hmode||h8300smode)
+	          {
+		    register unsigned char *_src,*_dst;
+		    unsigned int count = (code->opcode==O(O_EEPMOV, SW))?cpu.regs[R4_REGNUM]&0xffff:
+									 cpu.regs[R4_REGNUM]&0xff;
+
+		   _src = cpu.regs[R5_REGNUM] < memory_size ? cpu.memory+cpu.regs[R5_REGNUM] :
+	           				       	      cpu.eightbit + (cpu.regs[R5_REGNUM] & 0xff);
+		   if((_src+count)>=(cpu.memory+memory_size))
+		   {
+			   if((_src+count)>=(cpu.eightbit+0x100))
+			      goto illegal;
+		   }
+		   _dst = cpu.regs[R6_REGNUM] < memory_size ? cpu.memory+cpu.regs[R6_REGNUM] :
+	           				       	      cpu.eightbit + (cpu.regs[R6_REGNUM] & 0xff);
+		   if((_dst+count)>=(cpu.memory+memory_size))
+		   {
+			   if((_dst+count)>=(cpu.eightbit+0x100))
+			      goto illegal;
+		   }
+		   memcpy(_dst,_src,count);
+
+		   cpu.regs[R5_REGNUM]+=count;
+		   cpu.regs[R6_REGNUM]+=count;
+		   cpu.regs[R4_REGNUM]&=(code->opcode==O(O_EEPMOV, SW))?(~0xffff):(~0xff);
+		   cycles += 2*count;
+	           goto next;
+	     }
+	    goto illegal;
 
 	case O (O_ADDS, SL):
 	  SET_L_REG (code->dst.reg,
@@ -1194,10 +1247,28 @@ sim_resume (sd, step, siggnal)
 	  SET_L_REG (code->dst.reg, res);
 	  goto just_flags_inc32;
 
-
 #define GET_CCR(x) BUILDSR();x = cpu.ccr
 #define GET_EXR(x) BUILDEXR();x = cpu.exr
 
+	case O (O_LDC, SB):
+	case O (O_LDC, SW):
+	  res = fetch(&code->src);
+	  goto setc;
+	case O (O_STC, SB):
+	case O (O_STC, SW):
+          if(code->src.type==OP_CCR)
+          {
+	     GET_CCR(res);
+          }
+          else if(code->src.type==OP_EXR && h8300smode)
+          {
+	     GET_EXR(res);
+          }
+          else
+	    goto illegal;
+	  store (&code->dst, res);
+	  goto next;
+
 	case O (O_ANDC, SB):
           if(code->dst.type==OP_CCR)
           {
@@ -1462,6 +1533,22 @@ sim_resume (sd, step, siggnal)
 	  MOP (0, 0);
 	  break;
 
+	case O (O_TAS, SB):
+          if( !h8300smode || code->src.type != X (OP_REG, SL) )
+          	goto illegal;
+          switch(code->src.reg)
+          {
+           case R0_REGNUM:
+           case R1_REGNUM:
+           case R4_REGNUM:
+           case R5_REGNUM:
+           	break;
+           default:
+             goto illegal;
+          }
+          res =  fetch (&code->src);
+          store (&code->src,res|0x80);
+	  goto just_flags_log8;
 
 	case O (O_DIVU, SB):
 	  {
@@ -1842,28 +1929,6 @@ sim_read (sd, addr, buffer, size)
 }
 
 
-#define R0_REGNUM	0
-#define R1_REGNUM	1
-#define R2_REGNUM	2
-#define R3_REGNUM	3
-#define R4_REGNUM	4
-#define R5_REGNUM	5
-#define R6_REGNUM	6
-#define R7_REGNUM	7
-
-#define SP_REGNUM       R7_REGNUM	/* Contains address of top of stack */
-#define FP_REGNUM       R6_REGNUM	/* Contains address of executing
-					 * stack frame */
-
-#define CCR_REGNUM      8	/* Contains processor status */
-#define PC_REGNUM       9	/* Contains program counter */
-
-#define CYCLE_REGNUM    10
-#define EXR_REGNUM	11      /* Contains extended processor status */
-#define INST_REGNUM     11
-#define TICK_REGNUM     12
-
-
 int
 sim_store_register (sd, rn, value, length)
      SIM_DESC sd;
-- 
2.7.4