1999-05-03 07:29:11 +00:00
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/* Disassemble h8300 instructions.
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2001-08-26 11:47:39 +00:00
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Copyright 1993, 1994, 1996, 1998, 2000, 2001 Free Software Foundation, Inc.
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1999-05-03 07:29:11 +00:00
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#define DEFINE_TABLE
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2000-04-14 04:16:58 +00:00
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#include "sysdep.h"
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1999-05-03 07:29:11 +00:00
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#define h8_opcodes h8ops
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#include "opcode/h8300.h"
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#include "dis-asm.h"
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#include "opintl.h"
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|
2001-08-26 11:47:39 +00:00
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static void bfd_h8_disassemble_init PARAMS ((void));
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static unsigned int bfd_h8_disassemble
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PARAMS ((bfd_vma, disassemble_info *, int));
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1999-05-03 07:29:11 +00:00
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/* Run through the opcodes and sort them into order to make them easy
|
2000-06-01 18:19:59 +00:00
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|
to disassemble. */
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1999-05-03 07:29:11 +00:00
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static void
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bfd_h8_disassemble_init ()
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{
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unsigned int i;
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struct h8_opcode *p;
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for (p = h8_opcodes; p->name; p++)
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{
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int n1 = 0;
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int n2 = 0;
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if ((int) p->data.nib[0] < 16)
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2000-06-02 18:09:28 +00:00
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n1 = (int) p->data.nib[0];
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1999-05-03 07:29:11 +00:00
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else
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n1 = 0;
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2000-06-12 22:23:25 +00:00
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1999-05-03 07:29:11 +00:00
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if ((int) p->data.nib[1] < 16)
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2000-06-02 18:09:28 +00:00
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n2 = (int) p->data.nib[1];
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1999-05-03 07:29:11 +00:00
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else
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n2 = 0;
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/* Just make sure there are an even number of nibbles in it, and
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2000-06-01 18:19:59 +00:00
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that the count is the same as the length. */
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1999-05-03 07:29:11 +00:00
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for (i = 0; p->data.nib[i] != E; i++)
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2000-06-12 22:23:25 +00:00
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;
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1999-05-03 07:29:11 +00:00
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if (i & 1)
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abort ();
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2000-06-12 22:23:25 +00:00
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1999-05-03 07:29:11 +00:00
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p->length = i / 2;
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}
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}
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2001-08-26 11:47:39 +00:00
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static unsigned int
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1999-05-03 07:29:11 +00:00
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bfd_h8_disassemble (addr, info, mode)
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bfd_vma addr;
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disassemble_info *info;
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int mode;
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{
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2000-06-01 18:19:59 +00:00
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/* Find the first entry in the table for this opcode. */
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1999-05-03 07:29:11 +00:00
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static CONST char *regnames[] =
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{
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"r0h", "r1h", "r2h", "r3h", "r4h", "r5h", "r6h", "r7h",
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2000-06-01 18:19:59 +00:00
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"r0l", "r1l", "r2l", "r3l", "r4l", "r5l", "r6l", "r7l"
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};
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1999-05-03 07:29:11 +00:00
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static CONST char *wregnames[] =
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{
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"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
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"e0", "e1", "e2", "e3", "e4", "e5", "e6", "e7"
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2000-06-01 18:19:59 +00:00
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};
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1999-05-03 07:29:11 +00:00
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static CONST char *lregnames[] =
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{
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"er0", "er1", "er2", "er3", "er4", "er5", "er6", "er7",
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"er0", "er1", "er2", "er3", "er4", "er5", "er6", "er7"
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2000-06-01 18:19:59 +00:00
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};
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1999-05-03 07:29:11 +00:00
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int rs = 0;
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int rd = 0;
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int rdisp = 0;
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int abs = 0;
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int bit = 0;
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int plen = 0;
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static boolean init = 0;
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2000-07-03 21:52:37 +00:00
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struct h8_opcode *q;
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1999-05-03 07:29:11 +00:00
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char CONST **pregnames = mode != 0 ? lregnames : wregnames;
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int status;
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int l;
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2000-06-02 18:09:28 +00:00
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unsigned char data[20];
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1999-05-03 07:29:11 +00:00
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void *stream = info->stream;
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fprintf_ftype fprintf = info->fprintf_func;
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if (!init)
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{
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bfd_h8_disassemble_init ();
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init = 1;
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}
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2000-06-01 18:19:59 +00:00
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status = info->read_memory_func (addr, data, 2, info);
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2000-06-02 18:09:28 +00:00
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if (status != 0)
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1999-05-03 07:29:11 +00:00
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{
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2000-06-01 18:19:59 +00:00
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info->memory_error_func (status, addr, info);
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1999-05-03 07:29:11 +00:00
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return -1;
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}
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2000-06-12 22:23:25 +00:00
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2000-06-01 18:19:59 +00:00
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for (l = 2; status == 0 && l < 10; l += 2)
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2000-06-12 22:23:25 +00:00
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status = info->read_memory_func (addr + l, data + l, 2, info);
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1999-05-03 07:29:11 +00:00
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2000-06-01 18:19:59 +00:00
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/* Find the exact opcode/arg combo. */
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2000-07-03 21:52:37 +00:00
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for (q = h8_opcodes; q->name; q++)
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1999-05-03 07:29:11 +00:00
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{
|
2000-07-03 21:52:37 +00:00
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op_type *nib = q->data.nib;
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1999-05-03 07:29:11 +00:00
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unsigned int len = 0;
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while (1)
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{
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op_type looking_for = *nib;
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int thisnib = data[len >> 1];
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2000-06-12 22:23:25 +00:00
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1999-05-03 07:29:11 +00:00
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thisnib = (len & 1) ? (thisnib & 0xf) : ((thisnib >> 4) & 0xf);
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2000-06-12 22:23:25 +00:00
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2000-06-02 18:09:28 +00:00
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if (looking_for < 16 && looking_for >= 0)
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1999-05-03 07:29:11 +00:00
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{
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2000-06-02 18:09:28 +00:00
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if (looking_for != thisnib)
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1999-05-03 07:29:11 +00:00
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goto fail;
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}
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2000-06-02 18:09:28 +00:00
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else
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1999-05-03 07:29:11 +00:00
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{
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if ((int) looking_for & (int) B31)
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{
|
2000-06-12 22:23:25 +00:00
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if (!(((int) thisnib & 0x8) != 0))
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1999-05-03 07:29:11 +00:00
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goto fail;
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2000-06-12 22:23:25 +00:00
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1999-05-03 07:29:11 +00:00
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looking_for = (op_type) ((int) looking_for & ~(int) B31);
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}
|
2000-06-12 22:23:25 +00:00
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1999-05-03 07:29:11 +00:00
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if ((int) looking_for & (int) B30)
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{
|
2000-06-02 18:09:28 +00:00
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if (!(((int) thisnib & 0x8) == 0))
|
1999-05-03 07:29:11 +00:00
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goto fail;
|
2000-06-12 22:23:25 +00:00
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1999-05-03 07:29:11 +00:00
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|
looking_for = (op_type) ((int) looking_for & ~(int) B30);
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}
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if (looking_for & DBIT)
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|
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|
{
|
2000-06-12 22:23:25 +00:00
|
|
|
/* Exclude adds/subs by looking at bit 0 and 2, and
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|
|
make sure the operand size, either w or l,
|
|
|
|
matches by looking at bit 1. */
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if ((looking_for & 7) != (thisnib & 7))
|
2000-06-01 18:19:59 +00:00
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|
goto fail;
|
2000-06-12 22:23:25 +00:00
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|
1999-05-03 07:29:11 +00:00
|
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|
abs = (thisnib & 0x8) ? 2 : 1;
|
2000-06-02 18:09:28 +00:00
|
|
|
}
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|
else if (looking_for & (REG | IND | INC | DEC))
|
1999-05-03 07:29:11 +00:00
|
|
|
{
|
|
|
|
if (looking_for & SRC)
|
2000-06-01 18:19:59 +00:00
|
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|
rs = thisnib;
|
1999-05-03 07:29:11 +00:00
|
|
|
else
|
2000-06-01 18:19:59 +00:00
|
|
|
rd = thisnib;
|
1999-05-03 07:29:11 +00:00
|
|
|
}
|
|
|
|
else if (looking_for & L_16)
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|
|
|
{
|
|
|
|
abs = (data[len >> 1]) * 256 + data[(len + 2) >> 1];
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|
|
|
plen = 16;
|
|
|
|
}
|
2000-06-01 18:19:59 +00:00
|
|
|
else if (looking_for & ABSJMP)
|
1999-05-03 07:29:11 +00:00
|
|
|
{
|
2000-06-02 18:09:28 +00:00
|
|
|
abs = (data[1] << 16) | (data[2] << 8) | (data[3]);
|
1999-05-03 07:29:11 +00:00
|
|
|
}
|
2000-06-01 18:19:59 +00:00
|
|
|
else if (looking_for & MEMIND)
|
1999-05-03 07:29:11 +00:00
|
|
|
{
|
|
|
|
abs = data[1];
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|
|
|
}
|
|
|
|
else if (looking_for & L_32)
|
|
|
|
{
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|
|
|
int i = len >> 1;
|
2000-06-12 22:23:25 +00:00
|
|
|
|
1999-05-03 07:29:11 +00:00
|
|
|
abs = (data[i] << 24)
|
|
|
|
| (data[i + 1] << 16)
|
2000-06-02 18:09:28 +00:00
|
|
|
| (data[i + 2] << 8)
|
2000-06-12 22:23:25 +00:00
|
|
|
| (data[i + 3]);
|
1999-05-03 07:29:11 +00:00
|
|
|
|
2000-06-01 18:19:59 +00:00
|
|
|
plen = 32;
|
1999-05-03 07:29:11 +00:00
|
|
|
}
|
|
|
|
else if (looking_for & L_24)
|
|
|
|
{
|
|
|
|
int i = len >> 1;
|
2000-06-12 22:23:25 +00:00
|
|
|
|
2000-06-02 18:09:28 +00:00
|
|
|
abs = (data[i] << 16) | (data[i + 1] << 8) | (data[i + 2]);
|
|
|
|
plen = 24;
|
1999-05-03 07:29:11 +00:00
|
|
|
}
|
|
|
|
else if (looking_for & IGNORE)
|
|
|
|
{
|
2000-06-01 18:19:59 +00:00
|
|
|
;
|
1999-05-03 07:29:11 +00:00
|
|
|
}
|
|
|
|
else if (looking_for & DISPREG)
|
|
|
|
{
|
|
|
|
rdisp = thisnib;
|
|
|
|
}
|
|
|
|
else if (looking_for & KBIT)
|
|
|
|
{
|
2000-06-02 18:09:28 +00:00
|
|
|
switch (thisnib)
|
1999-05-03 07:29:11 +00:00
|
|
|
{
|
|
|
|
case 9:
|
|
|
|
abs = 4;
|
|
|
|
break;
|
|
|
|
case 8:
|
|
|
|
abs = 2;
|
|
|
|
break;
|
|
|
|
case 0:
|
|
|
|
abs = 1;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else if (looking_for & L_8)
|
|
|
|
{
|
2000-06-02 18:09:28 +00:00
|
|
|
plen = 8;
|
1999-05-03 07:29:11 +00:00
|
|
|
abs = data[len >> 1];
|
|
|
|
}
|
|
|
|
else if (looking_for & L_3)
|
|
|
|
{
|
|
|
|
bit = thisnib & 0x7;
|
|
|
|
}
|
|
|
|
else if (looking_for & L_2)
|
|
|
|
{
|
|
|
|
plen = 2;
|
|
|
|
abs = thisnib & 0x3;
|
|
|
|
}
|
|
|
|
else if (looking_for & MACREG)
|
|
|
|
{
|
|
|
|
abs = (thisnib == 3);
|
|
|
|
}
|
|
|
|
else if (looking_for == E)
|
|
|
|
{
|
2000-06-01 18:19:59 +00:00
|
|
|
int i;
|
1999-05-03 07:29:11 +00:00
|
|
|
|
2000-06-01 18:19:59 +00:00
|
|
|
for (i = 0; i < q->length; i++)
|
|
|
|
fprintf (stream, "%02x ", data[i]);
|
2000-06-12 22:23:25 +00:00
|
|
|
|
2000-06-01 18:19:59 +00:00
|
|
|
for (; i < 6; i++)
|
|
|
|
fprintf (stream, " ");
|
2000-06-12 22:23:25 +00:00
|
|
|
|
1999-05-03 07:29:11 +00:00
|
|
|
fprintf (stream, "%s\t", q->name);
|
|
|
|
|
|
|
|
/* Gross. Disgusting. */
|
|
|
|
if (strcmp (q->name, "ldm.l") == 0)
|
|
|
|
{
|
|
|
|
int count, high;
|
|
|
|
|
|
|
|
count = (data[1] >> 4) & 0x3;
|
|
|
|
high = data[3] & 0x7;
|
|
|
|
|
|
|
|
fprintf (stream, "@sp+,er%d-er%d", high - count, high);
|
|
|
|
return q->length;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (strcmp (q->name, "stm.l") == 0)
|
|
|
|
{
|
|
|
|
int count, low;
|
|
|
|
|
|
|
|
count = (data[1] >> 4) & 0x3;
|
|
|
|
low = data[3] & 0x7;
|
|
|
|
|
|
|
|
fprintf (stream, "er%d-er%d,@-sp", low, low + count);
|
|
|
|
return q->length;
|
|
|
|
}
|
|
|
|
|
2000-06-01 18:19:59 +00:00
|
|
|
/* Fill in the args. */
|
1999-05-03 07:29:11 +00:00
|
|
|
{
|
|
|
|
op_type *args = q->args.nib;
|
|
|
|
int hadone = 0;
|
|
|
|
|
|
|
|
while (*args != E)
|
|
|
|
{
|
|
|
|
int x = *args;
|
2000-06-12 22:23:25 +00:00
|
|
|
|
1999-05-03 07:29:11 +00:00
|
|
|
if (hadone)
|
|
|
|
fprintf (stream, ",");
|
|
|
|
|
|
|
|
if (x & L_3)
|
|
|
|
{
|
|
|
|
fprintf (stream, "#0x%x", (unsigned) bit);
|
|
|
|
}
|
2000-06-02 18:09:28 +00:00
|
|
|
else if (x & (IMM | KBIT | DBIT))
|
1999-05-03 07:29:11 +00:00
|
|
|
{
|
|
|
|
/* Bletch. For shal #2,er0 and friends. */
|
2000-06-02 18:09:28 +00:00
|
|
|
if (*(args + 1) & SRC_IN_DST)
|
1999-05-03 07:29:11 +00:00
|
|
|
abs = 2;
|
|
|
|
|
|
|
|
fprintf (stream, "#0x%x", (unsigned) abs);
|
|
|
|
}
|
|
|
|
else if (x & REG)
|
|
|
|
{
|
|
|
|
int rn = (x & DST) ? rd : rs;
|
2000-06-12 22:23:25 +00:00
|
|
|
|
1999-05-03 07:29:11 +00:00
|
|
|
switch (x & SIZE)
|
|
|
|
{
|
|
|
|
case L_8:
|
|
|
|
fprintf (stream, "%s", regnames[rn]);
|
|
|
|
break;
|
|
|
|
case L_16:
|
|
|
|
fprintf (stream, "%s", wregnames[rn]);
|
|
|
|
break;
|
|
|
|
case L_P:
|
|
|
|
case L_32:
|
|
|
|
fprintf (stream, "%s", lregnames[rn]);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else if (x & MACREG)
|
|
|
|
{
|
|
|
|
fprintf (stream, "mac%c", abs ? 'l' : 'h');
|
|
|
|
}
|
|
|
|
else if (x & INC)
|
|
|
|
{
|
|
|
|
fprintf (stream, "@%s+", pregnames[rs]);
|
|
|
|
}
|
|
|
|
else if (x & DEC)
|
|
|
|
{
|
|
|
|
fprintf (stream, "@-%s", pregnames[rd]);
|
|
|
|
}
|
|
|
|
else if (x & IND)
|
|
|
|
{
|
|
|
|
int rn = (x & DST) ? rd : rs;
|
|
|
|
fprintf (stream, "@%s", pregnames[rn]);
|
|
|
|
}
|
|
|
|
else if (x & ABS8MEM)
|
|
|
|
{
|
|
|
|
fprintf (stream, "@0x%x:8", (unsigned) abs);
|
|
|
|
}
|
2000-06-02 18:09:28 +00:00
|
|
|
else if (x & (ABS | ABSJMP))
|
1999-05-03 07:29:11 +00:00
|
|
|
{
|
|
|
|
fprintf (stream, "@0x%x:%d", (unsigned) abs, plen);
|
|
|
|
}
|
|
|
|
else if (x & MEMIND)
|
|
|
|
{
|
|
|
|
fprintf (stream, "@@%d (%x)", abs, abs);
|
|
|
|
}
|
|
|
|
else if (x & PCREL)
|
|
|
|
{
|
2000-06-02 18:09:28 +00:00
|
|
|
if (x & L_16)
|
1999-05-03 07:29:11 +00:00
|
|
|
{
|
2000-06-01 18:19:59 +00:00
|
|
|
abs += 2;
|
2000-06-02 18:09:28 +00:00
|
|
|
fprintf (stream,
|
2000-06-12 22:23:25 +00:00
|
|
|
".%s%d (%x)",
|
|
|
|
(short) abs > 0 ? "+" : "",
|
2000-06-02 18:09:28 +00:00
|
|
|
(short) abs, addr + (short) abs + 2);
|
1999-05-03 07:29:11 +00:00
|
|
|
}
|
2000-06-01 18:19:59 +00:00
|
|
|
else
|
|
|
|
{
|
2000-06-02 18:09:28 +00:00
|
|
|
fprintf (stream,
|
2000-06-12 22:23:25 +00:00
|
|
|
".%s%d (%x)",
|
|
|
|
(char) abs > 0 ? "+" : "",
|
2000-06-02 18:09:28 +00:00
|
|
|
(char) abs, addr + (char) abs + 2);
|
2000-06-01 18:19:59 +00:00
|
|
|
}
|
1999-05-03 07:29:11 +00:00
|
|
|
}
|
|
|
|
else if (x & DISP)
|
|
|
|
{
|
2000-06-02 18:09:28 +00:00
|
|
|
fprintf (stream, "@(0x%x:%d,%s)",
|
2000-06-12 22:23:25 +00:00
|
|
|
abs, plen, pregnames[rdisp]);
|
1999-05-03 07:29:11 +00:00
|
|
|
}
|
|
|
|
else if (x & CCR)
|
|
|
|
{
|
|
|
|
fprintf (stream, "ccr");
|
|
|
|
}
|
|
|
|
else if (x & EXR)
|
|
|
|
{
|
|
|
|
fprintf (stream, "exr");
|
|
|
|
}
|
|
|
|
else
|
|
|
|
/* xgettext:c-format */
|
|
|
|
fprintf (stream, _("Hmmmm %x"), x);
|
2000-06-12 22:23:25 +00:00
|
|
|
|
1999-05-03 07:29:11 +00:00
|
|
|
hadone = 1;
|
|
|
|
args++;
|
|
|
|
}
|
|
|
|
}
|
2000-06-12 22:23:25 +00:00
|
|
|
|
1999-05-03 07:29:11 +00:00
|
|
|
return q->length;
|
|
|
|
}
|
|
|
|
else
|
2000-06-02 18:09:28 +00:00
|
|
|
/* xgettext:c-format */
|
|
|
|
fprintf (stream, _("Don't understand %x \n"), looking_for);
|
1999-05-03 07:29:11 +00:00
|
|
|
}
|
2000-06-12 22:23:25 +00:00
|
|
|
|
1999-05-03 07:29:11 +00:00
|
|
|
len++;
|
|
|
|
nib++;
|
|
|
|
}
|
2000-06-12 22:23:25 +00:00
|
|
|
|
1999-05-03 07:29:11 +00:00
|
|
|
fail:
|
2000-07-03 21:52:37 +00:00
|
|
|
;
|
1999-05-03 07:29:11 +00:00
|
|
|
}
|
|
|
|
|
2000-06-02 18:09:28 +00:00
|
|
|
/* Fell off the end. */
|
1999-05-03 07:29:11 +00:00
|
|
|
fprintf (stream, "%02x %02x .word\tH'%x,H'%x",
|
|
|
|
data[0], data[1],
|
|
|
|
data[0], data[1]);
|
|
|
|
return 2;
|
|
|
|
}
|
|
|
|
|
2000-06-02 18:09:28 +00:00
|
|
|
int
|
1999-05-03 07:29:11 +00:00
|
|
|
print_insn_h8300 (addr, info)
|
2000-06-02 18:09:28 +00:00
|
|
|
bfd_vma addr;
|
2000-06-01 18:19:59 +00:00
|
|
|
disassemble_info *info;
|
1999-05-03 07:29:11 +00:00
|
|
|
{
|
2000-06-02 18:09:28 +00:00
|
|
|
return bfd_h8_disassemble (addr, info, 0);
|
1999-05-03 07:29:11 +00:00
|
|
|
}
|
|
|
|
|
2000-06-02 18:09:28 +00:00
|
|
|
int
|
1999-05-03 07:29:11 +00:00
|
|
|
print_insn_h8300h (addr, info)
|
2000-06-01 18:19:59 +00:00
|
|
|
bfd_vma addr;
|
|
|
|
disassemble_info *info;
|
1999-05-03 07:29:11 +00:00
|
|
|
{
|
2000-06-02 18:09:28 +00:00
|
|
|
return bfd_h8_disassemble (addr, info, 1);
|
1999-05-03 07:29:11 +00:00
|
|
|
}
|
|
|
|
|
2000-06-02 18:09:28 +00:00
|
|
|
int
|
1999-05-03 07:29:11 +00:00
|
|
|
print_insn_h8300s (addr, info)
|
2000-06-01 18:19:59 +00:00
|
|
|
bfd_vma addr;
|
|
|
|
disassemble_info *info;
|
1999-05-03 07:29:11 +00:00
|
|
|
{
|
2000-06-02 18:09:28 +00:00
|
|
|
return bfd_h8_disassemble (addr, info, 2);
|
1999-05-03 07:29:11 +00:00
|
|
|
}
|