19990502 sourceware importbinu_ss_19990502

1 files changed, 574 insertions, 0 deletions

diff --git a/opcodes/z8k-dis.c b/opcodes/z8k-dis.c
new file mode 100644
index 0000000..7123622
--- /dev/null
+++ b/opcodes/z8k-dis.c
@@ -0,0 +1,574 @@
+/* Disassemble z8000 code.
+   Copyright 1992, 1993, 1995, 1998 Free Software Foundation, Inc.
+
+This file is part of GNU Binutils.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#include <ansidecl.h>
+#include "sysdep.h"
+#include "dis-asm.h"
+
+#define DEFINE_TABLE
+#include "z8k-opc.h"
+
+
+#include <setjmp.h>
+
+
+typedef struct
+{
+  /* These are all indexed by nibble number (i.e only every other entry
+     of bytes is used, and every 4th entry of words).  */
+  unsigned char nibbles[24];
+  unsigned char bytes[24];
+  unsigned short words[24];
+
+  /* Nibble number of first word not yet fetched.  */
+  int max_fetched;
+  bfd_vma insn_start;
+  jmp_buf bailout;
+
+  long tabl_index;
+  char instr_asmsrc[80];
+  unsigned long arg_reg[0x0f];
+  unsigned long immediate;
+  unsigned long displacement;
+  unsigned long address;
+  unsigned long cond_code;
+  unsigned long ctrl_code;
+  unsigned long flags;
+  unsigned long interrupts;
+}
+instr_data_s;
+
+/* Make sure that bytes from INFO->PRIVATE_DATA->BUFFER (inclusive)
+   to ADDR (exclusive) are valid.  Returns 1 for success, longjmps
+   on error.  */
+#define FETCH_DATA(info, nibble) \
+  ((nibble) < ((instr_data_s *)(info->private_data))->max_fetched \
+   ? 1 : fetch_data ((info), (nibble)))
+
+static int
+fetch_data (info, nibble)
+     struct disassemble_info *info;
+     int nibble;
+{
+  unsigned char mybuf[20];
+  int status;
+  instr_data_s *priv = (instr_data_s *)info->private_data;
+
+  if ((nibble % 4) != 0)
+    abort ();
+
+  status = (*info->read_memory_func) (priv->insn_start,
+				      (bfd_byte *) mybuf,
+				      nibble / 2,
+				      info);
+  if (status != 0)
+    {
+      (*info->memory_error_func) (status, priv->insn_start, info);
+      longjmp (priv->bailout, 1);
+    }
+
+  {
+    int i;
+    unsigned char *p = mybuf ;
+    
+    for (i = 0; i < nibble;)
+      {
+	priv->words[i] = (p[0] << 8) | p[1];
+	
+	priv->bytes[i] = *p;
+	priv->nibbles[i++] = *p >> 4;
+	priv->nibbles[i++] = *p &0xf;
+
+	++p;
+	priv->bytes[i] = *p;
+	priv->nibbles[i++] = *p >> 4;
+	priv->nibbles[i++] = *p & 0xf;
+
+	++p;
+      }
+  }
+  priv->max_fetched = nibble;
+  return 1;
+}
+
+static char *codes[16] =
+{
+  "f",
+  "lt",
+  "le",
+  "ule",
+  "ov/pe",
+  "mi",
+  "eq",
+  "c/ult",
+  "t",
+  "ge",
+  "gt",
+  "ugt",
+  "nov/po",
+  "pl",
+  "ne",
+  "nc/uge"
+};
+
+int z8k_lookup_instr PARAMS ((unsigned char*, disassemble_info *));
+static void output_instr
+  PARAMS ((instr_data_s *, unsigned long, disassemble_info *));
+static void unpack_instr PARAMS ((instr_data_s *, int, disassemble_info *));
+static void unparse_instr PARAMS ((instr_data_s *));
+
+static int
+print_insn_z8k (addr, info, is_segmented)
+     bfd_vma addr;
+     disassemble_info *info;
+     int is_segmented;
+{
+  instr_data_s instr_data;
+
+  info->private_data = (PTR) &instr_data;
+  instr_data.max_fetched = 0;
+  instr_data.insn_start = addr;
+  if (setjmp (instr_data.bailout) != 0)
+    /* Error return.  */
+    return -1;
+
+  instr_data.tabl_index = z8k_lookup_instr (instr_data.nibbles, info);
+  if (instr_data.tabl_index > 0)
+    {
+      unpack_instr (&instr_data, is_segmented, info);
+      unparse_instr (&instr_data);
+      output_instr (&instr_data, addr, info);
+      return z8k_table[instr_data.tabl_index].length;
+    }
+  else
+    {
+      FETCH_DATA (info, 4);
+      (*info->fprintf_func) (info->stream, ".word %02x%02x",
+			     instr_data.bytes[0], instr_data.bytes[2]);
+      return 2;
+    }
+}
+
+int
+print_insn_z8001 (addr, info)
+     bfd_vma addr;
+     disassemble_info *info;
+{
+  return print_insn_z8k (addr, info, 1);
+}
+
+int
+print_insn_z8002 (addr, info)
+     bfd_vma addr;
+     disassemble_info *info;
+{
+  return print_insn_z8k (addr, info, 0);
+}
+
+int
+z8k_lookup_instr (nibbles, info)
+     unsigned char *nibbles;
+     disassemble_info *info;
+{
+
+  int nibl_index, tabl_index;
+  int nibl_matched;
+  unsigned short instr_nibl;
+  unsigned short tabl_datum, datum_class, datum_value;
+
+  nibl_matched = 0;
+  tabl_index = 0;
+  while (!nibl_matched && z8k_table[tabl_index].name)
+    {
+      nibl_matched = 1;
+      for (nibl_index = 0; nibl_index < z8k_table[tabl_index].length * 2 && nibl_matched; nibl_index++)
+	{
+	  if ((nibl_index % 4) == 0)
+	    /* Fetch one word at a time.  */
+	    FETCH_DATA (info, nibl_index + 4);
+	  instr_nibl = nibbles[nibl_index];
+
+	  tabl_datum = z8k_table[tabl_index].byte_info[nibl_index];
+	  datum_class = tabl_datum & CLASS_MASK;
+	  datum_value = ~CLASS_MASK & tabl_datum;
+
+	  switch (datum_class)
+	    {
+	    case CLASS_BIT:
+	      if (datum_value != instr_nibl)
+		nibl_matched = 0;
+	      break;
+	    case CLASS_00II:
+	      if (!((~instr_nibl) & 0x4))
+		nibl_matched = 0;
+	      break;
+	    case CLASS_01II:
+	      if (!(instr_nibl & 0x4))
+		nibl_matched = 0;
+	      break;
+	    case CLASS_0CCC:
+	      if (!((~instr_nibl) & 0x8))
+		nibl_matched = 0;
+	      break;
+	    case CLASS_1CCC:
+	      if (!(instr_nibl & 0x8))
+		nibl_matched = 0;
+	      break;
+	    case CLASS_0DISP7:
+	      if (!((~instr_nibl) & 0x8))
+		nibl_matched = 0;
+	      nibl_index += 1;
+	      break;
+	    case CLASS_1DISP7:
+	      if (!(instr_nibl & 0x8))
+		nibl_matched = 0;
+	      nibl_index += 1;
+	      break;
+	    case CLASS_REGN0:
+	      if (instr_nibl == 0)
+		nibl_matched = 0;
+	      break;
+	    case CLASS_BIT_1OR2:
+	      if ((instr_nibl | 0x2) != (datum_value | 0x2))
+		nibl_matched = 0;
+	      break;
+	    default:
+	      break;
+	    }
+	}
+      if (nibl_matched)
+	{
+	  return tabl_index;
+	}
+
+      tabl_index++;
+    }
+  return -1;
+
+}
+
+static void
+output_instr (instr_data, addr, info)
+     instr_data_s *instr_data;
+     unsigned long addr;
+     disassemble_info *info;
+{
+  int loop, loop_limit;
+  char tmp_str[20];
+  char out_str[100];
+
+  strcpy (out_str, "\t");
+
+  loop_limit = z8k_table[instr_data->tabl_index].length * 2;
+  FETCH_DATA (info, loop_limit);
+  for (loop = 0; loop < loop_limit; loop++)
+    {
+      sprintf (tmp_str, "%x", instr_data->nibbles[loop]);
+      strcat (out_str, tmp_str);
+    }
+
+  while (loop++ < 8)
+    {
+      strcat (out_str, " ");
+    }
+
+  strcat (out_str, instr_data->instr_asmsrc);
+
+  (*info->fprintf_func) (info->stream, "%s", out_str);
+}
+
+static void
+unpack_instr (instr_data, is_segmented, info)
+     instr_data_s *instr_data;
+     int is_segmented;
+     disassemble_info *info;
+{
+  int nibl_count, loop;
+  unsigned short instr_nibl, instr_byte, instr_word;
+  long instr_long;
+  unsigned short tabl_datum, datum_class, datum_value;
+
+  nibl_count = 0;
+  loop = 0;
+  while (z8k_table[instr_data->tabl_index].byte_info[loop] != 0)
+    {
+      FETCH_DATA (info, nibl_count + 4 - (nibl_count % 4));
+      instr_nibl = instr_data->nibbles[nibl_count];
+      instr_byte = instr_data->bytes[nibl_count];
+      instr_word = instr_data->words[nibl_count];
+
+      tabl_datum = z8k_table[instr_data->tabl_index].byte_info[loop];
+      datum_class = tabl_datum & CLASS_MASK;
+      datum_value = tabl_datum & ~CLASS_MASK;
+
+      switch (datum_class)
+	{
+	case CLASS_X:
+	  instr_data->address = instr_nibl;
+	  break;
+	case CLASS_BA:
+	  instr_data->displacement = instr_nibl;
+	  break;
+	case CLASS_BX:
+	  instr_data->arg_reg[datum_value] = instr_nibl;
+	  break;
+	case CLASS_DISP:
+	  switch (datum_value)
+	    {
+	    case ARG_DISP16:
+	      instr_data->displacement = instr_word;
+	      nibl_count += 3;
+	      break;
+	    case ARG_DISP12:
+	      instr_data->displacement = instr_word & 0x0fff;
+	      nibl_count += 2;
+	      break;
+	    default:
+	      break;
+	    }
+	  break;
+	case CLASS_IMM:
+	  switch (datum_value)
+	    {
+	    case ARG_IMM4:
+	      instr_data->immediate = instr_nibl;
+	      break;
+	    case ARG_NIM8:
+	      instr_data->immediate = (-instr_byte);
+	      nibl_count += 1;
+	      break;
+	    case ARG_IMM8:
+	      instr_data->immediate = instr_byte;
+	      nibl_count += 1;
+	      break;
+	    case ARG_IMM16:
+	      instr_data->immediate = instr_word;
+	      nibl_count += 3;
+	      break;
+	    case ARG_IMM32:
+	      FETCH_DATA (info, nibl_count + 8);
+	      instr_long = (instr_data->words[nibl_count] << 16)
+		| (instr_data->words[nibl_count + 4]);
+	      instr_data->immediate = instr_long;
+	      nibl_count += 7;
+	      break;
+	    case ARG_IMMN:
+	      instr_data->immediate = instr_nibl - 1;
+	      break;
+	    case ARG_IMM4M1:
+	      instr_data->immediate = instr_nibl + 1;
+	      break;
+	    case ARG_IMM_1:
+	      instr_data->immediate = 1;
+	      break;
+	    case ARG_IMM_2:
+	      instr_data->immediate = 2;
+	      break;
+	    case ARG_IMM2:
+	      instr_data->immediate = instr_nibl & 0x3;
+	      break;
+	    default:
+	      break;
+	    }
+	  break;
+	case CLASS_CC:
+	  instr_data->cond_code = instr_nibl;
+	  break;
+	case CLASS_CTRL:
+	  instr_data->ctrl_code = instr_nibl;
+	  break;
+	case CLASS_DA:
+	case CLASS_ADDRESS:
+	  if (is_segmented)
+	    {
+	      if (instr_nibl & 0x8)
+		{
+		  FETCH_DATA (info, nibl_count + 8);
+		  instr_long = (instr_data->words[nibl_count] << 16)
+		    | (instr_data->words[nibl_count + 4]);
+		  instr_data->address = ((instr_word & 0x7f00) << 8) +
+		    (instr_long & 0xffff);
+		  nibl_count += 7;
+		}
+	      else
+		{
+		  instr_data->address = ((instr_word & 0x7f00) << 8) +
+		    (instr_word & 0x00ff);
+		  nibl_count += 3;
+		}
+	    }
+	  else
+	    {
+	      instr_data->address = instr_word;
+	      nibl_count += 3;
+	    }
+	  break;
+	case CLASS_0CCC:
+	  instr_data->cond_code = instr_nibl & 0x7;
+	  break;
+	case CLASS_1CCC:
+	  instr_data->cond_code = instr_nibl & 0x7;
+	  break;
+	case CLASS_0DISP7:
+	  instr_data->displacement = instr_byte & 0x7f;
+	  nibl_count += 1;
+	  break;
+	case CLASS_1DISP7:
+	  instr_data->displacement = instr_byte & 0x7f;
+	  nibl_count += 1;
+	  break;
+	case CLASS_01II:
+	  instr_data->interrupts = instr_nibl & 0x3;
+	  break;
+	case CLASS_00II:
+	  instr_data->interrupts = instr_nibl & 0x3;
+	  break;
+	case CLASS_BIT:
+	  /* do nothing */
+	  break;
+	case CLASS_IR:
+	  instr_data->arg_reg[datum_value] = instr_nibl;
+	  break;
+	case CLASS_FLAGS:
+	  instr_data->flags = instr_nibl;
+	  break;
+	case CLASS_REG:
+	  instr_data->arg_reg[datum_value] = instr_nibl;
+	  break;
+	case CLASS_REG_BYTE:
+	  instr_data->arg_reg[datum_value] = instr_nibl;
+	  break;
+	case CLASS_REG_WORD:
+	  instr_data->arg_reg[datum_value] = instr_nibl;
+	  break;
+	case CLASS_REG_QUAD:
+	  instr_data->arg_reg[datum_value] = instr_nibl;
+	  break;
+	case CLASS_REG_LONG:
+	  instr_data->arg_reg[datum_value] = instr_nibl;
+	  break;
+	case CLASS_REGN0:
+	  instr_data->arg_reg[datum_value] = instr_nibl;
+	  break;
+	default:
+	  break;
+	}
+
+      loop += 1;
+      nibl_count += 1;
+    }
+}
+
+static void
+unparse_instr (instr_data)
+     instr_data_s *instr_data;
+{
+  unsigned short tabl_datum, datum_class, datum_value;
+  int loop, loop_limit;
+  char out_str[80], tmp_str[25];
+
+  sprintf (out_str, "\t%s\t", z8k_table[instr_data->tabl_index].name);
+
+  loop_limit = z8k_table[instr_data->tabl_index].noperands;
+  for (loop = 0; loop < loop_limit; loop++)
+    {
+      if (loop)
+	strcat (out_str, ",");
+
+      tabl_datum = z8k_table[instr_data->tabl_index].arg_info[loop];
+      datum_class = tabl_datum & CLASS_MASK;
+      datum_value = tabl_datum & ~CLASS_MASK;
+
+      switch (datum_class)
+	{
+	case CLASS_X:
+	  sprintf (tmp_str, "0x%0lx(R%ld)", instr_data->address,
+		   instr_data->arg_reg[datum_value]);
+	  strcat (out_str, tmp_str);
+	  break;
+	case CLASS_BA:
+	  sprintf (tmp_str, "r%ld(#%lx)", instr_data->arg_reg[datum_value],
+		   instr_data->immediate);
+	  strcat (out_str, tmp_str);
+	  break;
+	case CLASS_BX:
+	  sprintf (tmp_str, "r%ld(R%ld)", instr_data->arg_reg[datum_value],
+		   instr_data->arg_reg[ARG_RX]);
+	  strcat (out_str, tmp_str);
+	  break;
+	case CLASS_DISP:
+	  sprintf (tmp_str, "#0x%0lx", instr_data->displacement);
+	  strcat (out_str, tmp_str);
+	  break;
+	case CLASS_IMM:
+	  sprintf (tmp_str, "#0x%0lx", instr_data->immediate);
+	  strcat (out_str, tmp_str);
+	  break;
+	case CLASS_CC:
+	  sprintf (tmp_str, "%s", codes[instr_data->cond_code]);
+	  strcat (out_str, tmp_str);
+	  break;
+	case CLASS_CTRL:
+	  sprintf (tmp_str, "0x%0lx", instr_data->ctrl_code);
+	  strcat (out_str, tmp_str);
+	  break;
+	case CLASS_DA:
+	case CLASS_ADDRESS:
+	  sprintf (tmp_str, "#0x%0lx", instr_data->address);
+	  strcat (out_str, tmp_str);
+	  break;
+	case CLASS_IR:
+	  sprintf (tmp_str, "@R%ld", instr_data->arg_reg[datum_value]);
+	  strcat (out_str, tmp_str);
+	  break;
+	case CLASS_FLAGS:
+	  sprintf (tmp_str, "0x%0lx", instr_data->flags);
+	  strcat (out_str, tmp_str);
+	  break;
+	case CLASS_REG_BYTE:
+	  if (instr_data->arg_reg[datum_value] >= 0x8)
+	    {
+	      sprintf (tmp_str, "rl%ld",
+		       instr_data->arg_reg[datum_value] - 0x8);
+	    }
+	  else
+	    {
+	      sprintf (tmp_str, "rh%ld", instr_data->arg_reg[datum_value]);
+	    }
+	  strcat (out_str, tmp_str);
+	  break;
+	case CLASS_REG_WORD:
+	  sprintf (tmp_str, "r%ld", instr_data->arg_reg[datum_value]);
+	  strcat (out_str, tmp_str);
+	  break;
+	case CLASS_REG_QUAD:
+	  sprintf (tmp_str, "rq%ld", instr_data->arg_reg[datum_value]);
+	  strcat (out_str, tmp_str);
+	  break;
+	case CLASS_REG_LONG:
+	  sprintf (tmp_str, "rr%ld", instr_data->arg_reg[datum_value]);
+	  strcat (out_str, tmp_str);
+	  break;
+	default:
+	  break;
+	}
+    }
+
+  strcpy (instr_data->instr_asmsrc, out_str);
+}