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

Source (jump to first uncovered line)
/* Disassemble MN10200 instructions.
   Copyright (C) 1996-2023 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: 2023-08-28 06:30

Line	Count	Source (jump to first uncovered line)
1		/* Disassemble MN10200 instructions.
2		Copyright (C) 1996-2023 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	0	{
34	0	struct mn10200_opcode op = (struct mn10200_opcode )mn10200_opcodes;
35	0	const struct mn10200_operand *operand;
36	0	int match = 0;
37
38		/* Find the opcode. */
39	0	while (op->name)
40	0	{
41	0	int mysize, extra_shift;
42
43	0	if (op->format == FMT_1)
44	0	mysize = 1;
45	0	else if (op->format == FMT_2
46	0	\|\| op->format == FMT_4)
47	0	mysize = 2;
48	0	else if (op->format == FMT_3
49	0	\|\| op->format == FMT_5)
50	0	mysize = 3;
51	0	else if (op->format == FMT_6)
52	0	mysize = 4;
53	0	else if (op->format == FMT_7)
54	0	mysize = 5;
55	0	else
56	0	abort ();
57
58	0	if (op->format == FMT_2 \|\| op->format == FMT_5)
59	0	extra_shift = 8;
60	0	else if (op->format == FMT_3
61	0	\|\| op->format == FMT_6
62	0	\|\| op->format == FMT_7)
63	0	extra_shift = 16;
64	0	else
65	0	extra_shift = 0;
66
67	0	if ((op->mask & insn) == op->opcode
68	0	&& size == (unsigned int) mysize)
69	0	{
70	0	const unsigned char *opindex_ptr;
71	0	unsigned int nocomma;
72	0	int paren = 0;
73
74	0	match = 1;
75	0	(*info->fprintf_func) (info->stream, "%s\t", op->name);
76
77		/* Now print the operands. */
78	0	for (opindex_ptr = op->operands, nocomma = 1;
79	0	*opindex_ptr != 0;
80	0	opindex_ptr++)
81	0	{
82	0	unsigned long value;
83
84	0	operand = &mn10200_operands[*opindex_ptr];
85
86	0	if ((operand->flags & MN10200_OPERAND_DREG) != 0
87	0	\|\| (operand->flags & MN10200_OPERAND_AREG) != 0)
88	0	value = ((insn >> (operand->shift + extra_shift))
89	0	& ((1 << operand->bits) - 1));
90	0	else if ((operand->flags & MN10200_OPERAND_EXTENDED) != 0)
91	0	{
92	0	value = (insn & 0xffff) << 8;
93	0	value \|= extension;
94	0	}
95	0	else
96	0	value = ((insn >> (operand->shift))
97	0	& ((1L << operand->bits) - 1L));
98
99	0	if ((operand->flags & MN10200_OPERAND_SIGNED) != 0)
100	0	value = ((long)(value << (32 - operand->bits))
101	0	>> (32 - operand->bits));
102
103	0	if (!nocomma
104	0	&& (!paren
105	0	\|\| ((operand->flags & MN10200_OPERAND_PAREN) == 0)))
106	0	(*info->fprintf_func) (info->stream, ",");
107
108	0	nocomma = 0;
109
110	0	if ((operand->flags & MN10200_OPERAND_DREG) != 0)
111	0	(*info->fprintf_func) (info->stream, "d%ld", value);
112
113	0	else if ((operand->flags & MN10200_OPERAND_AREG) != 0)
114	0	(*info->fprintf_func) (info->stream, "a%ld", value);
115
116	0	else if ((operand->flags & MN10200_OPERAND_PSW) != 0)
117	0	(*info->fprintf_func) (info->stream, "psw");
118
119	0	else if ((operand->flags & MN10200_OPERAND_MDR) != 0)
120	0	(*info->fprintf_func) (info->stream, "mdr");
121
122	0	else if ((operand->flags & MN10200_OPERAND_PAREN) != 0)
123	0	{
124	0	if (paren)
125	0	(*info->fprintf_func) (info->stream, ")");
126	0	else
127	0	{
128	0	(*info->fprintf_func) (info->stream, "(");
129	0	nocomma = 1;
130	0	}
131	0	paren = !paren;
132	0	}
133
134	0	else if ((operand->flags & MN10200_OPERAND_PCREL) != 0)
135	0	(*info->print_address_func)
136	0	((value + memaddr + mysize) & 0xffffff, info);
137
138	0	else if ((operand->flags & MN10200_OPERAND_MEMADDR) != 0)
139	0	(*info->print_address_func) (value, info);
140
141	0	else
142	0	(*info->fprintf_func) (info->stream, "%ld", value);
143	0	}
144		/* All done. */
145	0	break;
146	0	}
147	0	op++;
148	0	}
149
150	0	if (!match)
151	0	(*info->fprintf_func) (info->stream, _("unknown\t0x%04lx"), insn);
152	0	}
153
154		int
155		print_insn_mn10200 (bfd_vma memaddr, struct disassemble_info *info)
156	0	{
157	0	int status;
158	0	bfd_byte buffer[4];
159	0	unsigned long insn;
160	0	unsigned long extension = 0;
161	0	unsigned int consume;
162
163		/* First figure out how big the opcode is. */
164	0	status = (*info->read_memory_func) (memaddr, buffer, 1, info);
165	0	if (status != 0)
166	0	{
167	0	(*info->memory_error_func) (status, memaddr, info);
168	0	return -1;
169	0	}
170
171	0	insn = (unsigned char ) buffer;
172
173		/* These are one byte insns. */
174	0	if ((insn & 0xf0) == 0x00
175	0	\|\| (insn & 0xf0) == 0x10
176	0	\|\| (insn & 0xf0) == 0x20
177	0	\|\| (insn & 0xf0) == 0x30
178	0	\|\| ((insn & 0xf0) == 0x80
179	0	&& (insn & 0x0c) >> 2 != (insn & 0x03))
180	0	\|\| (insn & 0xf0) == 0x90
181	0	\|\| (insn & 0xf0) == 0xa0
182	0	\|\| (insn & 0xf0) == 0xb0
183	0	\|\| (insn & 0xff) == 0xeb
184	0	\|\| (insn & 0xff) == 0xf6
185	0	\|\| (insn & 0xff) == 0xfe
186	0	\|\| (insn & 0xff) == 0xff)
187	0	{
188	0	extension = 0;
189	0	consume = 1;
190	0	}
191
192		/* These are two byte insns. */
193	0	else if ((insn & 0xf0) == 0x40
194	0	\|\| (insn & 0xf0) == 0x50
195	0	\|\| (insn & 0xf0) == 0x60
196	0	\|\| (insn & 0xf0) == 0x70
197	0	\|\| (insn & 0xf0) == 0x80
198	0	\|\| (insn & 0xfc) == 0xd0
199	0	\|\| (insn & 0xfc) == 0xd4
200	0	\|\| (insn & 0xfc) == 0xd8
201	0	\|\| (insn & 0xfc) == 0xe0
202	0	\|\| (insn & 0xfc) == 0xe4
203	0	\|\| (insn & 0xff) == 0xe8
204	0	\|\| (insn & 0xff) == 0xe9
205	0	\|\| (insn & 0xff) == 0xea
206	0	\|\| (insn & 0xff) == 0xf0
207	0	\|\| (insn & 0xff) == 0xf1
208	0	\|\| (insn & 0xff) == 0xf2
209	0	\|\| (insn & 0xff) == 0xf3)
210	0	{
211	0	status = (*info->read_memory_func) (memaddr, buffer, 2, info);
212	0	if (status != 0)
213	0	{
214	0	(*info->memory_error_func) (status, memaddr, info);
215	0	return -1;
216	0	}
217	0	insn = bfd_getb16 (buffer);
218	0	consume = 2;
219	0	}
220
221		/* These are three byte insns with a 16bit operand in little
222		endian form. */
223	0	else if ((insn & 0xf0) == 0xc0
224	0	\|\| (insn & 0xfc) == 0xdc
225	0	\|\| (insn & 0xfc) == 0xec
226	0	\|\| (insn & 0xff) == 0xf8
227	0	\|\| (insn & 0xff) == 0xf9
228	0	\|\| (insn & 0xff) == 0xfa
229	0	\|\| (insn & 0xff) == 0xfb
230	0	\|\| (insn & 0xff) == 0xfc
231	0	\|\| (insn & 0xff) == 0xfd)
232	0	{
233	0	status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info);
234	0	if (status != 0)
235	0	{
236	0	(*info->memory_error_func) (status, memaddr, info);
237	0	return -1;
238	0	}
239	0	insn <<= 16;
240	0	insn \|= bfd_getl16 (buffer);
241	0	extension = 0;
242	0	consume = 3;
243	0	}
244		/* These are three byte insns too, but we don't have to mess with
245		endianness stuff. */
246	0	else if ((insn & 0xff) == 0xf5)
247	0	{
248	0	status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info);
249	0	if (status != 0)
250	0	{
251	0	(*info->memory_error_func) (status, memaddr, info);
252	0	return -1;
253	0	}
254	0	insn <<= 16;
255	0	insn \|= bfd_getb16 (buffer);
256	0	extension = 0;
257	0	consume = 3;
258	0	}
259
260		/* These are four byte insns. */
261	0	else if ((insn & 0xff) == 0xf7)
262	0	{
263	0	status = (*info->read_memory_func) (memaddr, buffer, 2, info);
264	0	if (status != 0)
265	0	{
266	0	(*info->memory_error_func) (status, memaddr, info);
267	0	return -1;
268	0	}
269	0	insn = bfd_getb16 (buffer);
270	0	insn <<= 16;
271	0	status = (*info->read_memory_func) (memaddr + 2, buffer, 2, info);
272	0	if (status != 0)
273	0	{
274	0	(*info->memory_error_func) (status, memaddr, info);
275	0	return -1;
276	0	}
277	0	insn \|= bfd_getl16 (buffer);
278	0	extension = 0;
279	0	consume = 4;
280	0	}
281
282		/* These are five byte insns. */
283	0	else if ((insn & 0xff) == 0xf4)
284	0	{
285	0	status = (*info->read_memory_func) (memaddr, buffer, 2, info);
286	0	if (status != 0)
287	0	{
288	0	(*info->memory_error_func) (status, memaddr, info);
289	0	return -1;
290	0	}
291	0	insn = bfd_getb16 (buffer);
292	0	insn <<= 16;
293
294	0	status = (*info->read_memory_func) (memaddr + 4, buffer, 1, info);
295	0	if (status != 0)
296	0	{
297	0	(*info->memory_error_func) (status, memaddr, info);
298	0	return -1;
299	0	}
300	0	insn \|= ((unsigned char )buffer << 8) & 0xff00;
301
302	0	status = (*info->read_memory_func) (memaddr + 3, buffer, 1, info);
303	0	if (status != 0)
304	0	{
305	0	(*info->memory_error_func) (status, memaddr, info);
306	0	return -1;
307	0	}
308	0	insn \|= ((unsigned char )buffer) & 0xff;
309
310	0	status = (*info->read_memory_func) (memaddr + 2, buffer, 1, info);
311	0	if (status != 0)
312	0	{
313	0	(*info->memory_error_func) (status, memaddr, info);
314	0	return -1;
315	0	}
316	0	extension = ((unsigned char )buffer) & 0xff;
317	0	consume = 5;
318	0	}
319	0	else
320	0	{
321	0	(*info->fprintf_func) (info->stream, _("unknown\t0x%02lx"), insn);
322	0	return 1;
323	0	}
324
325	0	disassemble (memaddr, info, insn, extension, consume);
326
327	0	return consume;
328	0	}