1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
|
/* tilepro-dis.c. Disassembly routines for the TILEPro architecture.
Copyright (C) 2011-2024 Free Software Foundation, Inc.
This file is part of the GNU opcodes library.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
#include "sysdep.h"
#include <stddef.h>
#include <assert.h>
#include "bfd.h"
#include "elf/tilepro.h"
#include "elf-bfd.h"
#include "disassemble.h"
#include "opcode/tilepro.h"
#define TREG_ZERO 63
static int
contains_insn (tilepro_mnemonic expected_mnemonic,
int expected_first_operand,
int expected_second_operand,
bfd_vma memaddr,
int *last_operand_ret,
disassemble_info *info)
{
struct tilepro_decoded_instruction
decoded[TILEPRO_MAX_INSTRUCTIONS_PER_BUNDLE];
bfd_byte opbuf[TILEPRO_BUNDLE_SIZE_IN_BYTES];
int i, num_instructions;
if ((*info->read_memory_func) (memaddr, opbuf,
TILEPRO_BUNDLE_SIZE_IN_BYTES, info) != 0)
/* If we cannot even read the memory, it obviously does not have the
instruction for which we are looking. */
return 0;
/* Parse the instructions in the bundle. */
num_instructions = parse_insn_tilepro (bfd_getl64 (opbuf), memaddr, decoded);
for (i = 0; i < num_instructions; i++)
{
const struct tilepro_opcode *opcode = decoded[i].opcode;
if (opcode->mnemonic != expected_mnemonic)
continue;
if (expected_first_operand != -1
&& decoded[i].operand_values[0] != expected_first_operand)
continue;
if (expected_second_operand != -1
&& decoded[i].operand_values[1] != expected_second_operand)
continue;
*last_operand_ret = decoded[i].operand_values[opcode->num_operands - 1];
return 1;
}
/* No match. */
return 0;
}
int
print_insn_tilepro (bfd_vma memaddr, disassemble_info *info)
{
struct tilepro_decoded_instruction
decoded[TILEPRO_MAX_INSTRUCTIONS_PER_BUNDLE];
bfd_byte opbuf[TILEPRO_BUNDLE_SIZE_IN_BYTES];
int status, i, num_instructions, num_printed;
tilepro_mnemonic padding_mnemonic;
status = (*info->read_memory_func) (memaddr, opbuf,
TILEPRO_BUNDLE_SIZE_IN_BYTES, info);
if (status != 0)
{
(*info->memory_error_func) (status, memaddr, info);
return -1;
}
info->bytes_per_line = TILEPRO_BUNDLE_SIZE_IN_BYTES;
info->bytes_per_chunk = TILEPRO_BUNDLE_SIZE_IN_BYTES;
info->octets_per_byte = 1;
info->display_endian = BFD_ENDIAN_LITTLE;
/* Parse the instructions in the bundle. */
num_instructions = parse_insn_tilepro (bfd_getl64 (opbuf), memaddr, decoded);
/* Print the instructions in the bundle. */
info->fprintf_func (info->stream, "{ ");
num_printed = 0;
/* Determine which nop opcode is used for padding and should be skipped. */
padding_mnemonic = TILEPRO_OPC_FNOP;
for (i = 0; i < num_instructions; i++)
{
if (!decoded[i].opcode->can_bundle)
{
/* Instructions that cannot be bundled are padded out with nops,
rather than fnops. Displaying them is always clutter. */
padding_mnemonic = TILEPRO_OPC_NOP;
break;
}
}
for (i = 0; i < num_instructions; i++)
{
const struct tilepro_opcode *opcode = decoded[i].opcode;
const char *name;
int j;
/* Do not print out fnops, unless everything is an fnop, in
which case we will print out just the last one. */
if (opcode->mnemonic == padding_mnemonic
&& (num_printed > 0 || i + 1 < num_instructions))
continue;
if (num_printed > 0)
info->fprintf_func (info->stream, " ; ");
++num_printed;
name = opcode->name;
if (name == NULL)
name = "<invalid>";
info->fprintf_func (info->stream, "%s", name);
for (j = 0; j < opcode->num_operands; j++)
{
int num;
const struct tilepro_operand *op;
const char *spr_name;
if (j > 0)
info->fprintf_func (info->stream, ",");
info->fprintf_func (info->stream, " ");
num = decoded[i].operand_values[j];
op = decoded[i].operands[j];
switch (op->type)
{
case TILEPRO_OP_TYPE_REGISTER:
info->fprintf_func (info->stream, "%s",
tilepro_register_names[num]);
break;
case TILEPRO_OP_TYPE_SPR:
spr_name = get_tilepro_spr_name(num);
if (spr_name != NULL)
info->fprintf_func (info->stream, "%s", spr_name);
else
info->fprintf_func (info->stream, "%d", num);
break;
case TILEPRO_OP_TYPE_IMMEDIATE:
{
bfd_vma addr = 0;
int found_addr = 0;
int addr_piece;
switch (opcode->mnemonic)
{
case TILEPRO_OPC_ADDLI:
if (contains_insn (TILEPRO_OPC_AULI,
decoded[i].operand_values[1],
TREG_ZERO,
memaddr - TILEPRO_BUNDLE_SIZE_IN_BYTES,
&addr_piece,
info))
{
addr = num + (addr_piece << 16);
found_addr = 1;
}
break;
case TILEPRO_OPC_AULI:
if (contains_insn (TILEPRO_OPC_MOVELI,
decoded[i].operand_values[1],
-1,
memaddr - TILEPRO_BUNDLE_SIZE_IN_BYTES,
&addr_piece,
info))
{
addr = (num << 16) + addr_piece;
found_addr = 1;
}
break;
default:
/* Operand does not look like a constructed address. */
break;
}
info->fprintf_func (info->stream, "%d", num);
if (found_addr)
{
info->fprintf_func (info->stream, " /* ");
info->print_address_func (addr, info);
info->fprintf_func (info->stream, " */");
}
}
break;
case TILEPRO_OP_TYPE_ADDRESS:
info->print_address_func ((bfd_vma)(unsigned int) num, info);
break;
default:
abort ();
}
}
}
info->fprintf_func (info->stream, " }");
return TILEPRO_BUNDLE_SIZE_IN_BYTES;
}
|
