1 /* Disassemble h8500 instructions.
2 Copyright (C) 1993, 94, 95, 1998 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
23 #include "h8500-opc.h"
27 /* Maximum length of an instruction. */
34 /* Points to first byte not fetched. */
35 bfd_byte *max_fetched;
36 bfd_byte the_buffer[MAXLEN];
41 /* Make sure that bytes from INFO->PRIVATE_DATA->BUFFER (inclusive)
42 to ADDR (exclusive) are valid. Returns 1 for success, longjmps
44 #define FETCH_DATA(info, addr) \
45 ((addr) <= ((struct private *)(info->private_data))->max_fetched \
46 ? 1 : fetch_data ((info), (addr)))
49 fetch_data (info, addr)
50 struct disassemble_info *info;
54 struct private *priv = (struct private *) info->private_data;
55 bfd_vma start = priv->insn_start + (priv->max_fetched - priv->the_buffer);
57 status = (*info->read_memory_func) (start,
59 addr - priv->max_fetched,
63 (*info->memory_error_func) (status, start, info);
64 longjmp (priv->bailout, 1);
67 priv->max_fetched = addr;
71 static char *crname[] =
72 {"sr", "ccr", "*", "br", "ep", "dp", "*", "tp"};
75 print_insn_h8500 (addr, info)
77 disassemble_info *info;
79 h8500_opcode_info *opcode;
80 void *stream = info->stream;
81 fprintf_ftype func = info->fprintf_func;
84 bfd_byte *buffer = priv.the_buffer;
86 info->private_data = (PTR) & priv;
87 priv.max_fetched = priv.the_buffer;
88 priv.insn_start = addr;
89 if (setjmp (priv.bailout) != 0)
98 for (opcode = h8500_table; opcode->name; opcode++)
100 if ((opcode->bytes[0].contents & 0x8) == 0)
101 printf("%s\n", opcode->name);
107 /* Run down the table to find the one which matches */
108 for (opcode = h8500_table; opcode->name; opcode++)
121 for (byte = 0; byte < opcode->length; byte++)
123 FETCH_DATA (info, buffer + byte + 1);
124 if ((buffer[byte] & opcode->bytes[byte].mask)
125 != (opcode->bytes[byte].contents))
131 /* extract any info parts */
132 switch (opcode->bytes[byte].insert)
138 /* xgettext:c-format */
139 func (stream, _("can't cope with insert %d\n"),
140 opcode->bytes[byte].insert);
143 rn = buffer[byte] & 0x7;
146 rs = buffer[byte] & 0x7;
149 cr = buffer[byte] & 0x7;
154 cr = buffer[byte] & 0x7;
159 FETCH_DATA (info, buffer + byte + 2);
160 disp = (buffer[byte] << 8) | (buffer[byte + 1]);
164 disp = ((char) (buffer[byte]));
168 rd = buffer[byte] & 0x7;
171 FETCH_DATA (info, buffer + byte + 3);
174 | (buffer[byte + 1] << 8)
175 | (buffer[byte + 2]);
178 FETCH_DATA (info, buffer + byte + 2);
179 abs = (buffer[byte] << 8) | (buffer[byte + 1]);
182 abs = (buffer[byte]);
185 FETCH_DATA (info, buffer + byte + 2);
186 imm = (buffer[byte] << 8) | (buffer[byte + 1]);
189 imm = (buffer[byte]) & 0xf;
193 imm = (buffer[byte]);
196 FETCH_DATA (info, buffer + byte + 2);
197 pcrel = (buffer[byte] << 8) | (buffer[byte + 1]);
200 pcrel = (buffer[byte]);
203 switch (buffer[byte] & 0x7)
223 /* We get here when all the masks have passed so we can output the
225 FETCH_DATA (info, buffer + opcode->length);
226 for (i = 0; i < opcode->length; i++)
228 (func) (stream, "%02x ", buffer[i]);
232 (func) (stream, " ");
234 (func) (stream, "%s\t", opcode->name);
235 for (i = 0; i < opcode->nargs; i++)
238 (func) (stream, ",");
239 switch (opcode->arg_type[i])
245 func (stream, "@(0x%x:16,r%d)", disp, rn);
248 func (stream, "@(0x%x:8 (%d),r%d)", disp & 0xff, disp, rn);
251 func (stream, "@(0x%x:16,r%d)", disp, rd);
254 func (stream, "@(0x%x:8 (%d), r%d)", disp & 0xff, disp, rd);
257 func (stream, "@(0x%x:8 (%d), fp)", disp & 0xff, disp, rn);
261 func (stream, "%s", crname[cr]);
264 func (stream, "r%d", rn);
267 func (stream, "r%d", rd);
270 func (stream, "r%d", rs);
273 func (stream, "@-r%d", rn);
276 func (stream, "@r%d+", rn);
279 func (stream, "@r%d", rn);
282 func (stream, "@r%d", rd);
285 func (stream, "@sp+");
288 func (stream, "@-sp");
291 func (stream, "@0x%0x:24", abs);
294 func (stream, "@0x%0x:16", abs & 0xffff);
297 func (stream, "@0x%0x:8", abs & 0xff);
300 func (stream, "#0x%0x:16", imm & 0xffff);
307 for (i = 0; i < 8; i++)
311 func (stream, "r%d", i);
321 func (stream, "#0x%0x:8", imm & 0xff);
324 func (stream, "0x%0x:16", (pcrel + addr + opcode->length) & 0xffff);
327 func (stream, "#0x%0x:8",
328 ((char) pcrel + addr + opcode->length) & 0xffff);
331 func (stream, "#%d:q", qim);
334 func (stream, "#%d:4", imm);
338 return opcode->length;
342 /* Couldn't understand anything */
343 /* xgettext:c-format */
344 func (stream, _("%02x\t\t*unknown*"), buffer[0]);