1 /* Disassemble h8500 instructions.
2 Copyright 1993, 1998, 2000, 2001, 2002, 2004, 2005, 2007
3 Free Software Foundation, Inc.
5 This file is part of the GNU opcodes library.
7 This library is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
12 It is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
15 License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
24 #define DISASSEMBLER_TABLE
28 #include "h8500-opc.h"
32 /* Maximum length of an instruction. */
39 /* Points to first byte not fetched. */
40 bfd_byte
*max_fetched
;
41 bfd_byte the_buffer
[MAXLEN
];
46 /* Make sure that bytes from INFO->PRIVATE_DATA->BUFFER (inclusive)
47 to ADDR (exclusive) are valid. Returns 1 for success, longjmps
49 #define FETCH_DATA(info, addr) \
50 ((addr) <= ((struct private *)(info->private_data))->max_fetched \
51 ? 1 : fetch_data ((info), (addr)))
54 fetch_data (struct disassemble_info
*info
, bfd_byte
*addr
)
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 (bfd_vma addr
, disassemble_info
*info
)
79 const h8500_opcode_info
*opcode
;
80 void *stream
= info
->stream
;
81 fprintf_ftype func
= info
->fprintf_func
;
83 bfd_byte
*buffer
= priv
.the_buffer
;
85 info
->private_data
= (PTR
) & priv
;
86 priv
.max_fetched
= priv
.the_buffer
;
87 priv
.insn_start
= addr
;
88 if (setjmp (priv
.bailout
) != 0)
92 /* Run down the table to find the one which matches. */
93 for (opcode
= h8500_table
; opcode
->name
; opcode
++)
107 for (byte
= 0; byte
< opcode
->length
; byte
++)
109 FETCH_DATA (info
, buffer
+ byte
+ 1);
110 if ((buffer
[byte
] & opcode
->bytes
[byte
].mask
)
111 != (opcode
->bytes
[byte
].contents
))
116 /* Extract any info parts. */
117 switch (opcode
->bytes
[byte
].insert
)
123 /* xgettext:c-format */
124 func (stream
, _("can't cope with insert %d\n"),
125 opcode
->bytes
[byte
].insert
);
128 rn
= buffer
[byte
] & 0x7;
131 rs
= buffer
[byte
] & 0x7;
134 cr
= buffer
[byte
] & 0x7;
139 cr
= buffer
[byte
] & 0x7;
144 FETCH_DATA (info
, buffer
+ byte
+ 2);
145 disp
= (buffer
[byte
] << 8) | (buffer
[byte
+ 1]);
149 disp
= ((char) (buffer
[byte
]));
153 rd
= buffer
[byte
] & 0x7;
156 FETCH_DATA (info
, buffer
+ byte
+ 3);
159 | (buffer
[byte
+ 1] << 8)
160 | (buffer
[byte
+ 2]);
163 FETCH_DATA (info
, buffer
+ byte
+ 2);
164 abs_val
= (buffer
[byte
] << 8) | (buffer
[byte
+ 1]);
167 abs_val
= (buffer
[byte
]);
170 FETCH_DATA (info
, buffer
+ byte
+ 2);
171 imm
= (buffer
[byte
] << 8) | (buffer
[byte
+ 1]);
174 imm
= (buffer
[byte
]) & 0xf;
178 imm
= (buffer
[byte
]);
181 FETCH_DATA (info
, buffer
+ byte
+ 2);
182 pcrel
= (buffer
[byte
] << 8) | (buffer
[byte
+ 1]);
185 pcrel
= (buffer
[byte
]);
188 switch (buffer
[byte
] & 0x7)
208 /* We get here when all the masks have passed so we can output
210 FETCH_DATA (info
, buffer
+ opcode
->length
);
211 (func
) (stream
, "%s\t", opcode
->name
);
212 for (i
= 0; i
< opcode
->nargs
; i
++)
215 (func
) (stream
, ",");
216 switch (opcode
->arg_type
[i
])
222 func (stream
, "@(0x%x:16,r%d)", disp
, rn
);
225 func (stream
, "@(0x%x:8 (%d),r%d)", disp
& 0xff, disp
, rn
);
228 func (stream
, "@(0x%x:16,r%d)", disp
, rd
);
231 func (stream
, "@(0x%x:8 (%d), r%d)", disp
& 0xff, disp
, rd
);
234 func (stream
, "@(0x%x:8 (%d), fp)", disp
& 0xff, disp
);
238 func (stream
, "%s", crname
[cr
]);
241 func (stream
, "r%d", rn
);
244 func (stream
, "r%d", rd
);
247 func (stream
, "r%d", rs
);
250 func (stream
, "@-r%d", rn
);
253 func (stream
, "@r%d+", rn
);
256 func (stream
, "@r%d", rn
);
259 func (stream
, "@r%d", rd
);
262 func (stream
, "@sp+");
265 func (stream
, "@-sp");
268 func (stream
, "@0x%0x:24", abs_val
);
271 func (stream
, "@0x%0x:16", abs_val
& 0xffff);
274 func (stream
, "@0x%0x:8", abs_val
& 0xff);
277 func (stream
, "#0x%0x:16", imm
& 0xffff);
285 for (j
= 0; j
< 8; j
++)
289 func (stream
, "r%d", j
);
299 func (stream
, "#0x%0x:8", imm
& 0xff);
302 func (stream
, "0x%0x:16",
303 (int)(pcrel
+ addr
+ opcode
->length
) & 0xffff);
306 func (stream
, "#0x%0x:8",
307 (int)((char) pcrel
+ addr
+ opcode
->length
) & 0xffff);
310 func (stream
, "#%d:q", qim
);
313 func (stream
, "#%d:4", imm
);
317 return opcode
->length
;
322 /* Couldn't understand anything. */
323 /* xgettext:c-format */
324 func (stream
, _("%02x\t\t*unknown*"), buffer
[0]);
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