1 /* Disassemble h8500 instructions.
2 Copyright 1993, 1998, 2000, 2001, 2002, 2004, 2005
3 Free Software Foundation, Inc.
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
18 MA 02110-1301, USA. */
22 #define DISASSEMBLER_TABLE
26 #include "h8500-opc.h"
30 /* Maximum length of an instruction. */
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 (struct disassemble_info *info, bfd_byte *addr)
55 struct private *priv = (struct private *) info->private_data;
56 bfd_vma start = priv->insn_start + (priv->max_fetched - priv->the_buffer);
58 status = (*info->read_memory_func) (start,
60 addr - priv->max_fetched,
64 (*info->memory_error_func) (status, start, info);
65 longjmp (priv->bailout, 1);
68 priv->max_fetched = addr;
72 static char *crname[] = { "sr", "ccr", "*", "br", "ep", "dp", "*", "tp" };
75 print_insn_h8500 (bfd_vma addr, disassemble_info *info)
77 const h8500_opcode_info *opcode;
78 void *stream = info->stream;
79 fprintf_ftype func = info->fprintf_func;
81 bfd_byte *buffer = priv.the_buffer;
83 info->private_data = (PTR) & priv;
84 priv.max_fetched = priv.the_buffer;
85 priv.insn_start = addr;
86 if (setjmp (priv.bailout) != 0)
90 /* Run down the table to find the one which matches. */
91 for (opcode = h8500_table; opcode->name; opcode++)
105 for (byte = 0; byte < opcode->length; byte++)
107 FETCH_DATA (info, buffer + byte + 1);
108 if ((buffer[byte] & opcode->bytes[byte].mask)
109 != (opcode->bytes[byte].contents))
114 /* Extract any info parts. */
115 switch (opcode->bytes[byte].insert)
121 /* xgettext:c-format */
122 func (stream, _("can't cope with insert %d\n"),
123 opcode->bytes[byte].insert);
126 rn = buffer[byte] & 0x7;
129 rs = buffer[byte] & 0x7;
132 cr = buffer[byte] & 0x7;
137 cr = buffer[byte] & 0x7;
142 FETCH_DATA (info, buffer + byte + 2);
143 disp = (buffer[byte] << 8) | (buffer[byte + 1]);
147 disp = ((char) (buffer[byte]));
151 rd = buffer[byte] & 0x7;
154 FETCH_DATA (info, buffer + byte + 3);
157 | (buffer[byte + 1] << 8)
158 | (buffer[byte + 2]);
161 FETCH_DATA (info, buffer + byte + 2);
162 abs = (buffer[byte] << 8) | (buffer[byte + 1]);
165 abs = (buffer[byte]);
168 FETCH_DATA (info, buffer + byte + 2);
169 imm = (buffer[byte] << 8) | (buffer[byte + 1]);
172 imm = (buffer[byte]) & 0xf;
176 imm = (buffer[byte]);
179 FETCH_DATA (info, buffer + byte + 2);
180 pcrel = (buffer[byte] << 8) | (buffer[byte + 1]);
183 pcrel = (buffer[byte]);
186 switch (buffer[byte] & 0x7)
206 /* We get here when all the masks have passed so we can output
208 FETCH_DATA (info, buffer + opcode->length);
209 (func) (stream, "%s\t", opcode->name);
210 for (i = 0; i < opcode->nargs; i++)
213 (func) (stream, ",");
214 switch (opcode->arg_type[i])
220 func (stream, "@(0x%x:16,r%d)", disp, rn);
223 func (stream, "@(0x%x:8 (%d),r%d)", disp & 0xff, disp, rn);
226 func (stream, "@(0x%x:16,r%d)", disp, rd);
229 func (stream, "@(0x%x:8 (%d), r%d)", disp & 0xff, disp, rd);
232 func (stream, "@(0x%x:8 (%d), fp)", disp & 0xff, disp);
236 func (stream, "%s", crname[cr]);
239 func (stream, "r%d", rn);
242 func (stream, "r%d", rd);
245 func (stream, "r%d", rs);
248 func (stream, "@-r%d", rn);
251 func (stream, "@r%d+", rn);
254 func (stream, "@r%d", rn);
257 func (stream, "@r%d", rd);
260 func (stream, "@sp+");
263 func (stream, "@-sp");
266 func (stream, "@0x%0x:24", abs);
269 func (stream, "@0x%0x:16", abs & 0xffff);
272 func (stream, "@0x%0x:8", abs & 0xff);
275 func (stream, "#0x%0x:16", imm & 0xffff);
283 for (i = 0; i < 8; i++)
287 func (stream, "r%d", i);
297 func (stream, "#0x%0x:8", imm & 0xff);
300 func (stream, "0x%0x:16",
301 (int)(pcrel + addr + opcode->length) & 0xffff);
304 func (stream, "#0x%0x:8",
305 (int)((char) pcrel + addr + opcode->length) & 0xffff);
308 func (stream, "#%d:q", qim);
311 func (stream, "#%d:4", imm);
315 return opcode->length;
320 /* Couldn't understand anything. */
321 /* xgettext:c-format */
322 func (stream, _("%02x\t\t*unknown*"), buffer[0]);