1 /* Disassemble h8500 instructions.
2 Copyright 1993, 1998, 2000, 2001, 2002 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
20 #define DISASSEMBLER_TABLE
24 #include "h8500-opc.h"
28 /* Maximum length of an instruction. */
33 static int fetch_data PARAMS ((struct disassemble_info *, bfd_byte *));
37 /* Points to first byte not fetched. */
38 bfd_byte *max_fetched;
39 bfd_byte the_buffer[MAXLEN];
44 /* Make sure that bytes from INFO->PRIVATE_DATA->BUFFER (inclusive)
45 to ADDR (exclusive) are valid. Returns 1 for success, longjmps
47 #define FETCH_DATA(info, addr) \
48 ((addr) <= ((struct private *)(info->private_data))->max_fetched \
49 ? 1 : fetch_data ((info), (addr)))
52 fetch_data (info, addr)
53 struct disassemble_info *info;
57 struct private *priv = (struct private *) info->private_data;
58 bfd_vma start = priv->insn_start + (priv->max_fetched - priv->the_buffer);
60 status = (*info->read_memory_func) (start,
62 addr - priv->max_fetched,
66 (*info->memory_error_func) (status, start, info);
67 longjmp (priv->bailout, 1);
70 priv->max_fetched = addr;
74 static char *crname[] = { "sr", "ccr", "*", "br", "ep", "dp", "*", "tp" };
77 print_insn_h8500 (addr, info)
79 disassemble_info *info;
81 const h8500_opcode_info *opcode;
82 void *stream = info->stream;
83 fprintf_ftype func = info->fprintf_func;
86 bfd_byte *buffer = priv.the_buffer;
88 info->private_data = (PTR) & priv;
89 priv.max_fetched = priv.the_buffer;
90 priv.insn_start = addr;
91 if (setjmp (priv.bailout) != 0)
102 for (opcode = h8500_table; opcode->name; opcode++)
104 if ((opcode->bytes[0].contents & 0x8) == 0)
105 printf ("%s\n", opcode->name);
110 /* Run down the table to find the one which matches. */
111 for (opcode = h8500_table; opcode->name; opcode++)
125 for (byte = 0; byte < opcode->length; byte++)
127 FETCH_DATA (info, buffer + byte + 1);
128 if ((buffer[byte] & opcode->bytes[byte].mask)
129 != (opcode->bytes[byte].contents))
135 /* Extract any info parts. */
136 switch (opcode->bytes[byte].insert)
142 /* xgettext:c-format */
143 func (stream, _("can't cope with insert %d\n"),
144 opcode->bytes[byte].insert);
147 rn = buffer[byte] & 0x7;
150 rs = buffer[byte] & 0x7;
153 cr = buffer[byte] & 0x7;
158 cr = buffer[byte] & 0x7;
163 FETCH_DATA (info, buffer + byte + 2);
164 disp = (buffer[byte] << 8) | (buffer[byte + 1]);
168 disp = ((char) (buffer[byte]));
172 rd = buffer[byte] & 0x7;
175 FETCH_DATA (info, buffer + byte + 3);
178 | (buffer[byte + 1] << 8)
179 | (buffer[byte + 2]);
182 FETCH_DATA (info, buffer + byte + 2);
183 abs = (buffer[byte] << 8) | (buffer[byte + 1]);
186 abs = (buffer[byte]);
189 FETCH_DATA (info, buffer + byte + 2);
190 imm = (buffer[byte] << 8) | (buffer[byte + 1]);
193 imm = (buffer[byte]) & 0xf;
197 imm = (buffer[byte]);
200 FETCH_DATA (info, buffer + byte + 2);
201 pcrel = (buffer[byte] << 8) | (buffer[byte + 1]);
204 pcrel = (buffer[byte]);
207 switch (buffer[byte] & 0x7)
227 /* We get here when all the masks have passed so we can output
229 FETCH_DATA (info, buffer + opcode->length);
230 for (i = 0; i < opcode->length; i++)
232 (func) (stream, "%02x ", buffer[i]);
236 (func) (stream, " ");
238 (func) (stream, "%s\t", opcode->name);
239 for (i = 0; i < opcode->nargs; i++)
242 (func) (stream, ",");
243 switch (opcode->arg_type[i])
249 func (stream, "@(0x%x:16,r%d)", disp, rn);
252 func (stream, "@(0x%x:8 (%d),r%d)", disp & 0xff, disp, rn);
255 func (stream, "@(0x%x:16,r%d)", disp, rd);
258 func (stream, "@(0x%x:8 (%d), r%d)", disp & 0xff, disp, rd);
261 func (stream, "@(0x%x:8 (%d), fp)", disp & 0xff, disp, rn);
265 func (stream, "%s", crname[cr]);
268 func (stream, "r%d", rn);
271 func (stream, "r%d", rd);
274 func (stream, "r%d", rs);
277 func (stream, "@-r%d", rn);
280 func (stream, "@r%d+", rn);
283 func (stream, "@r%d", rn);
286 func (stream, "@r%d", rd);
289 func (stream, "@sp+");
292 func (stream, "@-sp");
295 func (stream, "@0x%0x:24", abs);
298 func (stream, "@0x%0x:16", abs & 0xffff);
301 func (stream, "@0x%0x:8", abs & 0xff);
304 func (stream, "#0x%0x:16", imm & 0xffff);
311 for (i = 0; i < 8; i++)
315 func (stream, "r%d", i);
325 func (stream, "#0x%0x:8", imm & 0xff);
328 func (stream, "0x%0x:16",
329 (pcrel + addr + opcode->length) & 0xffff);
332 func (stream, "#0x%0x:8",
333 ((char) pcrel + addr + opcode->length) & 0xffff);
336 func (stream, "#%d:q", qim);
339 func (stream, "#%d:4", imm);
343 return opcode->length;
348 /* Couldn't understand anything. */
349 /* xgettext:c-format */
350 func (stream, _("%02x\t\t*unknown*"), buffer[0]);