/src/binutils-gdb/opcodes/m10200-dis.c

Source
/* Disassemble MN10200 instructions.
   Copyright (C) 1996-2026 Free Software Foundation, Inc.

   This file is part of the GNU opcodes library.

   This library 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 3, or (at your option)
   any later version.

   It 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., 51 Franklin Street - Fifth Floor, Boston,
   MA 02110-1301, USA.  */

#include "sysdep.h"
#include <stdio.h>
#include "opcode/mn10200.h"
#include "disassemble.h"
#include "opintl.h"

static void
disassemble (bfd_vma memaddr,
       struct disassemble_info *info,
       unsigned long insn,
       unsigned long extension,
       unsigned int size)
{
  struct mn10200_opcode *op = (struct mn10200_opcode *)mn10200_opcodes;
  const struct mn10200_operand *operand;
  int match = 0;

  /* Find the opcode.  */
  while (op->name)
    {
      int mysize, extra_shift;

      if (op->format == FMT_1)
  mysize = 1;
      else if (op->format == FMT_2
         || op->format == FMT_4)
  mysize = 2;
      else if (op->format == FMT_3
         || op->format == FMT_5)
  mysize = 3;
      else if (op->format == FMT_6)
  mysize = 4;
      else if (op->format == FMT_7)
  mysize = 5;
      else
  abort ();

      if (op->format == FMT_2 || op->format == FMT_5)
  extra_shift = 8;
      else if (op->format == FMT_3
         || op->format == FMT_6
         || op->format == FMT_7)
  extra_shift = 16;
      else
  extra_shift = 0;

      if ((op->mask & insn) == op->opcode
    && size == (unsigned int) mysize)
  {
    const unsigned char *opindex_ptr;
    unsigned int nocomma;
    int paren = 0;

    match = 1;
    (*info->fprintf_func) (info->stream, "%s\t", op->name);

    /* Now print the operands.  */
    for (opindex_ptr = op->operands, nocomma = 1;
         *opindex_ptr != 0;
         opindex_ptr++)
      {
        unsigned long value;

        operand = &mn10200_operands[*opindex_ptr];

        if ((operand->flags & MN10200_OPERAND_DREG) != 0
      || (operand->flags & MN10200_OPERAND_AREG) != 0)
    value = ((insn >> (operand->shift + extra_shift))
       & ((1 << operand->bits) - 1));
        else if ((operand->flags & MN10200_OPERAND_EXTENDED) != 0)
    {
      value = (insn & 0xffff) << 8;
      value |= extension;
    }
        else
    value = ((insn >> (operand->shift))
       & ((1L << operand->bits) - 1L));

        if ((operand->flags & MN10200_OPERAND_SIGNED) != 0)
    value = ((long)(value << (32 - operand->bits))
        >> (32 - operand->bits));

        if (!nocomma
      && (!paren
          || ((operand->flags & MN10200_OPERAND_PAREN) == 0)))
    (*info->fprintf_func) (info->stream, ",");

        nocomma = 0;

        if ((operand->flags & MN10200_OPERAND_DREG) != 0)
    (*info->fprintf_func) (info->stream, "d%ld", value);

        else if ((operand->flags & MN10200_OPERAND_AREG) != 0)
    (*info->fprintf_func) (info->stream, "a%ld", value);

        else if ((operand->flags & MN10200_OPERAND_PSW) != 0)
    (*info->fprintf_func) (info->stream, "psw");

        else if ((operand->flags & MN10200_OPERAND_MDR) != 0)
    (*info->fprintf_func) (info->stream, "mdr");

        else if ((operand->flags & MN10200_OPERAND_PAREN) != 0)
    {
      if (paren)
        (*info->fprintf_func) (info->stream, ")");
      else
        {
          (*info->fprintf_func) (info->stream, "(");
          nocomma = 1;
        }
      paren = !paren;
    }

        else if ((operand->flags & MN10200_OPERAND_PCREL) != 0)
    (*info->print_address_func)
      ((value + memaddr + mysize) & 0xffffff, info);

        else if ((operand->flags & MN10200_OPERAND_MEMADDR) != 0)
    (*info->print_address_func) (value, info);

        else
    (*info->fprintf_func) (info->stream, "%ld", value);
      }
    /* All done. */
    break;
  }
      op++;
    }

  if (!match)
    (*info->fprintf_func) (info->stream, _("unknown\t0x%04lx"), insn);
}

int
print_insn_mn10200 (bfd_vma memaddr, struct disassemble_info *info)
{
  int status;
  bfd_byte buffer[4];
  unsigned long insn;
  unsigned long extension = 0;
  unsigned int consume;

  /* First figure out how big the opcode is.  */
  status = (*info->read_memory_func) (memaddr, buffer, 1, info);
  if (status != 0)
    {
      (*info->memory_error_func) (status, memaddr, info);
      return -1;
    }

  insn = *(unsigned char *) buffer;

  /* These are one byte insns.  */
  if ((insn & 0xf0) == 0x00
      || (insn & 0xf0) == 0x10
      || (insn & 0xf0) == 0x20
      || (insn & 0xf0) == 0x30
      || ((insn & 0xf0) == 0x80
    && (insn & 0x0c) >> 2 != (insn & 0x03))
      || (insn & 0xf0) == 0x90
      || (insn & 0xf0) == 0xa0
      || (insn & 0xf0) == 0xb0
      || (insn & 0xff) == 0xeb
      || (insn & 0xff) == 0xf6
      || (insn & 0xff) == 0xfe
      || (insn & 0xff) == 0xff)
    {
      extension = 0;
      consume = 1;
    }

  /* These are two byte insns.  */
  else if ((insn & 0xf0) == 0x40
     || (insn & 0xf0) == 0x50
     || (insn & 0xf0) == 0x60
     || (insn & 0xf0) == 0x70
     || (insn & 0xf0) == 0x80
     || (insn & 0xfc) == 0xd0
     || (insn & 0xfc) == 0xd4
     || (insn & 0xfc) == 0xd8
     || (insn & 0xfc) == 0xe0
     || (insn & 0xfc) == 0xe4
     || (insn & 0xff) == 0xe8
     || (insn & 0xff) == 0xe9
     || (insn & 0xff) == 0xea
     || (insn & 0xff) == 0xf0
     || (insn & 0xff) == 0xf1
     || (insn & 0xff) == 0xf2
     || (insn & 0xff) == 0xf3)
    {
      status = (*info->read_memory_func) (memaddr, buffer, 2, info);
      if (status != 0)
  {
    (*info->memory_error_func) (status, memaddr, info);
     return -1;
  }
      insn = bfd_getb16 (buffer);
      consume = 2;
    }

  /* These are three byte insns with a 16bit operand in little
     endian form.  */
  else if ((insn & 0xf0) == 0xc0
     || (insn & 0xfc) == 0xdc
     || (insn & 0xfc) == 0xec
     || (insn & 0xff) == 0xf8
     || (insn & 0xff) == 0xf9
     || (insn & 0xff) == 0xfa
     || (insn & 0xff) == 0xfb
     || (insn & 0xff) == 0xfc
     || (insn & 0xff) == 0xfd)
    {
      status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info);
      if (status != 0)
  {
    (*info->memory_error_func) (status, memaddr, info);
    return -1;
  }
      insn <<= 16;
      insn |= bfd_getl16 (buffer);
      extension = 0;
      consume = 3;
    }
  /* These are three byte insns too, but we don't have to mess with
     endianness stuff.  */
  else if ((insn & 0xff) == 0xf5)
    {
      status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info);
      if (status != 0)
  {
    (*info->memory_error_func) (status, memaddr, info);
    return -1;
  }
      insn <<= 16;
      insn |= bfd_getb16 (buffer);
      extension = 0;
      consume = 3;
    }

  /* These are four byte insns.  */
  else if ((insn & 0xff) == 0xf7)
    {
      status = (*info->read_memory_func) (memaddr, buffer, 2, info);
      if (status != 0)
  {
    (*info->memory_error_func) (status, memaddr, info);
    return -1;
  }
      insn = bfd_getb16 (buffer);
      insn <<= 16;
      status = (*info->read_memory_func) (memaddr + 2, buffer, 2, info);
      if (status != 0)
  {
    (*info->memory_error_func) (status, memaddr, info);
    return -1;
  }
      insn |= bfd_getl16 (buffer);
      extension = 0;
      consume = 4;
    }

  /* These are five byte insns.  */
  else if ((insn & 0xff) == 0xf4)
    {
      status = (*info->read_memory_func) (memaddr, buffer, 2, info);
      if (status != 0)
  {
    (*info->memory_error_func) (status, memaddr, info);
    return -1;
  }
      insn = bfd_getb16 (buffer);
      insn <<= 16;

      status = (*info->read_memory_func) (memaddr + 4, buffer, 1, info);
      if (status != 0)
  {
    (*info->memory_error_func) (status, memaddr, info);
    return -1;
  }
      insn |= (*(unsigned char *)buffer << 8) & 0xff00;

      status = (*info->read_memory_func) (memaddr + 3, buffer, 1, info);
      if (status != 0)
  {
    (*info->memory_error_func) (status, memaddr, info);
    return -1;
  }
      insn |= (*(unsigned char *)buffer) & 0xff;

      status = (*info->read_memory_func) (memaddr + 2, buffer, 1, info);
      if (status != 0)
  {
    (*info->memory_error_func) (status, memaddr, info);
    return -1;
  }
      extension = (*(unsigned char *)buffer) & 0xff;
      consume = 5;
    }
  else
    {
      (*info->fprintf_func) (info->stream, _("unknown\t0x%02lx"), insn);
      return 1;
    }

  disassemble (memaddr, info, insn, extension, consume);

  return consume;
}

Coverage Report

Created: 2026-04-04 08:16

Line	Count	Source
1		/* Disassemble MN10200 instructions.
2		Copyright (C) 1996-2026 Free Software Foundation, Inc.
3
4		This file is part of the GNU opcodes library.
5
6		This library is free software; you can redistribute it and/or modify
7		it under the terms of the GNU General Public License as published by
8		the Free Software Foundation; either version 3, or (at your option)
9		any later version.
10
11		It is distributed in the hope that it will be useful, but WITHOUT
12		ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
13		or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
14		License for more details.
15
16		You should have received a copy of the GNU General Public License
17		along with this program; if not, write to the Free Software
18		Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19		MA 02110-1301, USA. */
20
21		#include "sysdep.h"
22		#include <stdio.h>
23		#include "opcode/mn10200.h"
24		#include "disassemble.h"
25		#include "opintl.h"
26
27		static void
28		disassemble (bfd_vma memaddr,
29		struct disassemble_info *info,
30		unsigned long insn,
31		unsigned long extension,
32		unsigned int size)
33	271k	{
34	271k	struct mn10200_opcode op = (struct mn10200_opcode )mn10200_opcodes;
35	271k	const struct mn10200_operand *operand;
36	271k	int match = 0;
37
38		/* Find the opcode. */
39	14.2M	while (op->name)
40	14.2M	{
41	14.2M	int mysize, extra_shift;
42
43	14.2M	if (op->format == FMT_1)
44	1.45M	mysize = 1;
45	12.7M	else if (op->format == FMT_2
46	10.8M	\|\| op->format == FMT_4)
47	5.98M	mysize = 2;
48	6.77M	else if (op->format == FMT_3
49	5.92M	\|\| op->format == FMT_5)
50	2.13M	mysize = 3;
51	4.63M	else if (op->format == FMT_6)
52	1.97M	mysize = 4;
53	2.65M	else if (op->format == FMT_7)
54	2.65M	mysize = 5;
55	0	else
56	0	abort ();
57
58	14.2M	if (op->format == FMT_2 \|\| op->format == FMT_5)
59	3.19M	extra_shift = 8;
60	11.0M	else if (op->format == FMT_3
61	10.1M	\|\| op->format == FMT_6
62	8.19M	\|\| op->format == FMT_7)
63	5.47M	extra_shift = 16;
64	5.53M	else
65	5.53M	extra_shift = 0;
66
67	14.2M	if ((op->mask & insn) == op->opcode
68	291k	&& size == (unsigned int) mysize)
69	270k	{
70	270k	const unsigned char *opindex_ptr;
71	270k	unsigned int nocomma;
72	270k	int paren = 0;
73
74	270k	match = 1;
75	270k	(*info->fprintf_func) (info->stream, "%s\t", op->name);
76
77		/* Now print the operands. */
78	270k	for (opindex_ptr = op->operands, nocomma = 1;
79	1.13M	*opindex_ptr != 0;
80	866k	opindex_ptr++)
81	866k	{
82	866k	unsigned long value;
83
84	866k	operand = &mn10200_operands[*opindex_ptr];
85
86	866k	if ((operand->flags & MN10200_OPERAND_DREG) != 0
87	637k	\|\| (operand->flags & MN10200_OPERAND_AREG) != 0)
88	431k	value = ((insn >> (operand->shift + extra_shift))
89	431k	& ((1 << operand->bits) - 1));
90	435k	else if ((operand->flags & MN10200_OPERAND_EXTENDED) != 0)
91	591	{
92	591	value = (insn & 0xffff) << 8;
93	591	value \|= extension;
94	591	}
95	435k	else
96	435k	value = ((insn >> (operand->shift))
97	435k	& ((1L << operand->bits) - 1L));
98
99	866k	if ((operand->flags & MN10200_OPERAND_SIGNED) != 0)
100	58.1k	value = ((long)(value << (32 - operand->bits))
101	58.1k	>> (32 - operand->bits));
102
103	866k	if (!nocomma
104	443k	&& (!paren
105	222k	\|\| ((operand->flags & MN10200_OPERAND_PAREN) == 0)))
106	260k	(*info->fprintf_func) (info->stream, ",");
107
108	866k	nocomma = 0;
109
110	866k	if ((operand->flags & MN10200_OPERAND_DREG) != 0)
111	229k	(*info->fprintf_func) (info->stream, "d%ld", value);
112
113	637k	else if ((operand->flags & MN10200_OPERAND_AREG) != 0)
114	201k	(*info->fprintf_func) (info->stream, "a%ld", value);
115
116	435k	else if ((operand->flags & MN10200_OPERAND_PSW) != 0)
117	133	(*info->fprintf_func) (info->stream, "psw");
118
119	435k	else if ((operand->flags & MN10200_OPERAND_MDR) != 0)
120	267	(*info->fprintf_func) (info->stream, "mdr");
121
122	435k	else if ((operand->flags & MN10200_OPERAND_PAREN) != 0)
123	366k	{
124	366k	if (paren)
125	183k	(*info->fprintf_func) (info->stream, ")");
126	183k	else
127	183k	{
128	183k	(*info->fprintf_func) (info->stream, "(");
129	183k	nocomma = 1;
130	183k	}
131	366k	paren = !paren;
132	366k	}
133
134	68.9k	else if ((operand->flags & MN10200_OPERAND_PCREL) != 0)
135	10.4k	(*info->print_address_func)
136	10.4k	((value + memaddr + mysize) & 0xffffff, info);
137
138	58.5k	else if ((operand->flags & MN10200_OPERAND_MEMADDR) != 0)
139	6.64k	(*info->print_address_func) (value, info);
140
141	51.9k	else
142	51.9k	(*info->fprintf_func) (info->stream, "%ld", value);
143	866k	}
144		/* All done. */
145	270k	break;
146	270k	}
147	13.9M	op++;
148	13.9M	}
149
150	271k	if (!match)
151	1.08k	(*info->fprintf_func) (info->stream, _("unknown\t0x%04lx"), insn);
152	271k	}
153
154		int
155		print_insn_mn10200 (bfd_vma memaddr, struct disassemble_info *info)
156	272k	{
157	272k	int status;
158	272k	bfd_byte buffer[4];
159	272k	unsigned long insn;
160	272k	unsigned long extension = 0;
161	272k	unsigned int consume;
162
163		/* First figure out how big the opcode is. */
164	272k	status = (*info->read_memory_func) (memaddr, buffer, 1, info);
165	272k	if (status != 0)
166	1	{
167	1	(*info->memory_error_func) (status, memaddr, info);
168	1	return -1;
169	1	}
170
171	272k	insn = (unsigned char ) buffer;
172
173		/* These are one byte insns. */
174	272k	if ((insn & 0xf0) == 0x00
175	174k	\|\| (insn & 0xf0) == 0x10
176	165k	\|\| (insn & 0xf0) == 0x20
177	151k	\|\| (insn & 0xf0) == 0x30
178	134k	\|\| ((insn & 0xf0) == 0x80
179	12.3k	&& (insn & 0x0c) >> 2 != (insn & 0x03))
180	125k	\|\| (insn & 0xf0) == 0x90
181	119k	\|\| (insn & 0xf0) == 0xa0
182	111k	\|\| (insn & 0xf0) == 0xb0
183	103k	\|\| (insn & 0xff) == 0xeb
184	100k	\|\| (insn & 0xff) == 0xf6
185	100k	\|\| (insn & 0xff) == 0xfe
186	98.8k	\|\| (insn & 0xff) == 0xff)
187	199k	{
188	199k	extension = 0;
189	199k	consume = 1;
190	199k	}
191
192		/* These are two byte insns. */
193	72.8k	else if ((insn & 0xf0) == 0x40
194	64.8k	\|\| (insn & 0xf0) == 0x50
195	57.7k	\|\| (insn & 0xf0) == 0x60
196	47.3k	\|\| (insn & 0xf0) == 0x70
197	35.8k	\|\| (insn & 0xf0) == 0x80
198	32.7k	\|\| (insn & 0xfc) == 0xd0
199	31.2k	\|\| (insn & 0xfc) == 0xd4
200	29.5k	\|\| (insn & 0xfc) == 0xd8
201	28.1k	\|\| (insn & 0xfc) == 0xe0
202	25.7k	\|\| (insn & 0xfc) == 0xe4
203	23.9k	\|\| (insn & 0xff) == 0xe8
204	23.1k	\|\| (insn & 0xff) == 0xe9
205	22.3k	\|\| (insn & 0xff) == 0xea
206	21.8k	\|\| (insn & 0xff) == 0xf0
207	21.1k	\|\| (insn & 0xff) == 0xf1
208	20.4k	\|\| (insn & 0xff) == 0xf2
209	19.8k	\|\| (insn & 0xff) == 0xf3)
210	53.9k	{
211	53.9k	status = (*info->read_memory_func) (memaddr, buffer, 2, info);
212	53.9k	if (status != 0)
213	28	{
214	28	(*info->memory_error_func) (status, memaddr, info);
215	28	return -1;
216	28	}
217	53.9k	insn = bfd_getb16 (buffer);
218	53.9k	consume = 2;
219	53.9k	}
220
221		/* These are three byte insns with a 16bit operand in little
222		endian form. */
223	18.8k	else if ((insn & 0xf0) == 0xc0
224	12.2k	\|\| (insn & 0xfc) == 0xdc
225	10.7k	\|\| (insn & 0xfc) == 0xec
226	8.59k	\|\| (insn & 0xff) == 0xf8
227	7.61k	\|\| (insn & 0xff) == 0xf9
228	6.79k	\|\| (insn & 0xff) == 0xfa
229	6.31k	\|\| (insn & 0xff) == 0xfb
230	5.98k	\|\| (insn & 0xff) == 0xfc
231	4.94k	\|\| (insn & 0xff) == 0xfd)
232	16.9k	{
233	16.9k	status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info);
234	16.9k	if (status != 0)
235	19	{
236	19	(*info->memory_error_func) (status, memaddr, info);
237	19	return -1;
238	19	}
239	16.9k	insn <<= 16;
240	16.9k	insn \|= bfd_getl16 (buffer);
241	16.9k	extension = 0;
242	16.9k	consume = 3;
243	16.9k	}
244		/* These are three byte insns too, but we don't have to mess with
245		endianness stuff. */
246	1.90k	else if ((insn & 0xff) == 0xf5)
247	744	{
248	744	status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info);
249	744	if (status != 0)
250	3	{
251	3	(*info->memory_error_func) (status, memaddr, info);
252	3	return -1;
253	3	}
254	741	insn <<= 16;
255	741	insn \|= bfd_getb16 (buffer);
256	741	extension = 0;
257	741	consume = 3;
258	741	}
259
260		/* These are four byte insns. */
261	1.15k	else if ((insn & 0xff) == 0xf7)
262	510	{
263	510	status = (*info->read_memory_func) (memaddr, buffer, 2, info);
264	510	if (status != 0)
265	1	{
266	1	(*info->memory_error_func) (status, memaddr, info);
267	1	return -1;
268	1	}
269	509	insn = bfd_getb16 (buffer);
270	509	insn <<= 16;
271	509	status = (*info->read_memory_func) (memaddr + 2, buffer, 2, info);
272	509	if (status != 0)
273	2	{
274	2	(*info->memory_error_func) (status, memaddr, info);
275	2	return -1;
276	2	}
277	507	insn \|= bfd_getl16 (buffer);
278	507	extension = 0;
279	507	consume = 4;
280	507	}
281
282		/* These are five byte insns. */
283	647	else if ((insn & 0xff) == 0xf4)
284	647	{
285	647	status = (*info->read_memory_func) (memaddr, buffer, 2, info);
286	647	if (status != 0)
287	2	{
288	2	(*info->memory_error_func) (status, memaddr, info);
289	2	return -1;
290	2	}
291	645	insn = bfd_getb16 (buffer);
292	645	insn <<= 16;
293
294	645	status = (*info->read_memory_func) (memaddr + 4, buffer, 1, info);
295	645	if (status != 0)
296	1	{
297	1	(*info->memory_error_func) (status, memaddr, info);
298	1	return -1;
299	1	}
300	644	insn \|= ((unsigned char )buffer << 8) & 0xff00;
301
302	644	status = (*info->read_memory_func) (memaddr + 3, buffer, 1, info);
303	644	if (status != 0)
304	0	{
305	0	(*info->memory_error_func) (status, memaddr, info);
306	0	return -1;
307	0	}
308	644	insn \|= ((unsigned char )buffer) & 0xff;
309
310	644	status = (*info->read_memory_func) (memaddr + 2, buffer, 1, info);
311	644	if (status != 0)
312	0	{
313	0	(*info->memory_error_func) (status, memaddr, info);
314	0	return -1;
315	0	}
316	644	extension = ((unsigned char )buffer) & 0xff;
317	644	consume = 5;
318	644	}
319	0	else
320	0	{
321	0	(*info->fprintf_func) (info->stream, _("unknown\t0x%02lx"), insn);
322	0	return 1;
323	0	}
324
325	271k	disassemble (memaddr, info, insn, extension, consume);
326
327	271k	return consume;
328	272k	}