1 /* Disassemble D10V instructions.
2 Copyright 1996, 1997, 1998, 2000, 2001, 2005, 2007, 2012
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 #include "opcode/d10v.h"
27 /* The PC wraps at 18 bits, except for the segment number,
28 so use this mask to keep the parts we want. */
29 #define PC_MASK 0x0303FFFF
32 print_operand (struct d10v_operand *oper,
34 struct d10v_opcode *op,
36 struct disassemble_info *info)
40 if (oper->flags == OPERAND_ATMINUS)
42 (*info->fprintf_func) (info->stream, "@-");
45 if (oper->flags == OPERAND_MINUS)
47 (*info->fprintf_func) (info->stream, "-");
50 if (oper->flags == OPERAND_PLUS)
52 (*info->fprintf_func) (info->stream, "+");
55 if (oper->flags == OPERAND_ATSIGN)
57 (*info->fprintf_func) (info->stream, "@");
60 if (oper->flags == OPERAND_ATPAR)
62 (*info->fprintf_func) (info->stream, "@(");
68 /* The LONG_L format shifts registers over by 15. */
69 if (op->format == LONG_L && (oper->flags & OPERAND_REG))
72 num = (insn >> shift) & (0x7FFFFFFF >> (31 - oper->bits));
74 if (oper->flags & OPERAND_REG)
80 & (OPERAND_GPR | OPERAND_FFLAG | OPERAND_CFLAG | OPERAND_CONTROL));
81 if (oper->flags & (OPERAND_ACC0 | OPERAND_ACC1))
82 num += num ? OPERAND_ACC1 : OPERAND_ACC0;
83 for (i = 0; i < d10v_reg_name_cnt (); i++)
85 if (num == (d10v_predefined_registers[i].value & ~ OPERAND_SP))
87 if (d10v_predefined_registers[i].pname)
88 (*info->fprintf_func) (info->stream, "%s",
89 d10v_predefined_registers[i].pname);
91 (*info->fprintf_func) (info->stream, "%s",
92 d10v_predefined_registers[i].name);
99 /* This would only get executed if a register was not in the
101 if (oper->flags & (OPERAND_ACC0 | OPERAND_ACC1))
102 (*info->fprintf_func) (info->stream, "a");
103 else if (oper->flags & OPERAND_CONTROL)
104 (*info->fprintf_func) (info->stream, "cr");
105 else if (oper->flags & OPERAND_REG)
106 (*info->fprintf_func) (info->stream, "r");
107 (*info->fprintf_func) (info->stream, "%d", num & REGISTER_MASK);
112 /* Addresses are right-shifted by 2. */
113 if (oper->flags & OPERAND_ADDR)
118 max = (1 << (oper->bits - 1));
121 num = -num & ((1 << oper->bits) - 1);
125 if (info->flags & INSN_HAS_RELOC)
126 (*info->print_address_func) (num & PC_MASK, info);
130 (*info->print_address_func) ((memaddr - num) & PC_MASK, info);
132 (*info->print_address_func) ((memaddr + num) & PC_MASK, info);
137 if (oper->flags & OPERAND_SIGNED)
139 int max = (1 << (oper->bits - 1));
142 num = -num & ((1 << oper->bits) - 1);
143 (*info->fprintf_func) (info->stream, "-");
146 (*info->fprintf_func) (info->stream, "0x%x", num);
152 dis_long (unsigned long insn,
154 struct disassemble_info *info)
157 struct d10v_opcode *op = (struct d10v_opcode *) d10v_opcodes;
158 struct d10v_operand *oper;
164 if ((op->format & LONG_OPCODE)
165 && ((op->mask & insn) == (unsigned long) op->opcode))
168 (*info->fprintf_func) (info->stream, "%s\t", op->name);
170 for (i = 0; op->operands[i]; i++)
172 oper = (struct d10v_operand *) &d10v_operands[op->operands[i]];
173 if (oper->flags == OPERAND_ATPAR)
175 print_operand (oper, insn, op, memaddr, info);
176 if (op->operands[i + 1] && oper->bits
177 && d10v_operands[op->operands[i + 1]].flags != OPERAND_PLUS
178 && d10v_operands[op->operands[i + 1]].flags != OPERAND_MINUS)
179 (*info->fprintf_func) (info->stream, ", ");
187 (*info->fprintf_func) (info->stream, ".long\t0x%08lx", insn);
190 (*info->fprintf_func) (info->stream, ")");
194 dis_2_short (unsigned long insn,
196 struct disassemble_info *info,
201 struct d10v_opcode *op;
202 int match, num_match = 0;
203 struct d10v_operand *oper;
206 ins[0] = (insn & 0x3FFFFFFF) >> 15;
207 ins[1] = insn & 0x00007FFF;
209 for (j = 0; j < 2; j++)
211 op = (struct d10v_opcode *) d10v_opcodes;
215 if ((op->format & SHORT_OPCODE)
216 && ((((unsigned int) op->mask) & ins[j])
217 == (unsigned int) op->opcode))
219 (*info->fprintf_func) (info->stream, "%s\t", op->name);
220 for (i = 0; op->operands[i]; i++)
222 oper = (struct d10v_operand *) &d10v_operands[op->operands[i]];
223 if (oper->flags == OPERAND_ATPAR)
225 print_operand (oper, ins[j], op, memaddr, info);
226 if (op->operands[i + 1] && oper->bits
227 && d10v_operands[op->operands[i + 1]].flags != OPERAND_PLUS
228 && d10v_operands[op->operands[i + 1]].flags != OPERAND_MINUS)
229 (*info->fprintf_func) (info->stream, ", ");
238 (*info->fprintf_func) (info->stream, "unknown");
243 (*info->fprintf_func) (info->stream, "\t->\t");
247 (*info->fprintf_func) (info->stream, "\t<-\t");
251 (*info->fprintf_func) (info->stream, "\t||\t");
260 (*info->fprintf_func) (info->stream, ".long\t0x%08lx", insn);
263 (*info->fprintf_func) (info->stream, ")");
267 print_insn_d10v (bfd_vma memaddr, struct disassemble_info *info)
273 status = (*info->read_memory_func) (memaddr, buffer, 4, info);
276 (*info->memory_error_func) (status, memaddr, info);
279 insn = bfd_getb32 (buffer);
281 status = insn & FM11;
285 dis_2_short (insn, memaddr, info, 2);
288 dis_2_short (insn, memaddr, info, 0);
291 dis_2_short (insn, memaddr, info, 1);
294 dis_long (insn, memaddr, info);