1 /* Disassemble D10V instructions.
2 Copyright (C) 1996-2019 Free Software Foundation, Inc.
4 This file is part of the GNU opcodes library.
6 This library is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3, or (at your option)
11 It is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
13 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
14 License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
23 #include "opcode/d10v.h"
24 #include "disassemble.h"
26 /* The PC wraps at 18 bits, except for the segment number,
27 so use this mask to keep the parts we want. */
28 #define PC_MASK 0x0303FFFF
31 print_operand (struct d10v_operand *oper,
33 struct d10v_opcode *op,
35 struct disassemble_info *info)
39 if (oper->flags == OPERAND_ATMINUS)
41 (*info->fprintf_func) (info->stream, "@-");
44 if (oper->flags == OPERAND_MINUS)
46 (*info->fprintf_func) (info->stream, "-");
49 if (oper->flags == OPERAND_PLUS)
51 (*info->fprintf_func) (info->stream, "+");
54 if (oper->flags == OPERAND_ATSIGN)
56 (*info->fprintf_func) (info->stream, "@");
59 if (oper->flags == OPERAND_ATPAR)
61 (*info->fprintf_func) (info->stream, "@(");
67 /* The LONG_L format shifts registers over by 15. */
68 if (op->format == LONG_L && (oper->flags & OPERAND_REG))
71 num = (insn >> shift) & (0x7FFFFFFF >> (31 - oper->bits));
73 if (oper->flags & OPERAND_REG)
79 & (OPERAND_GPR | OPERAND_FFLAG | OPERAND_CFLAG | OPERAND_CONTROL));
80 if (oper->flags & (OPERAND_ACC0 | OPERAND_ACC1))
81 num += num ? OPERAND_ACC1 : OPERAND_ACC0;
82 for (i = 0; i < d10v_reg_name_cnt (); i++)
84 if (num == (d10v_predefined_registers[i].value & ~ OPERAND_SP))
86 if (d10v_predefined_registers[i].pname)
87 (*info->fprintf_func) (info->stream, "%s",
88 d10v_predefined_registers[i].pname);
90 (*info->fprintf_func) (info->stream, "%s",
91 d10v_predefined_registers[i].name);
98 /* This would only get executed if a register was not in the
100 if (oper->flags & (OPERAND_ACC0 | OPERAND_ACC1))
101 (*info->fprintf_func) (info->stream, "a");
102 else if (oper->flags & OPERAND_CONTROL)
103 (*info->fprintf_func) (info->stream, "cr");
104 else if (oper->flags & OPERAND_REG)
105 (*info->fprintf_func) (info->stream, "r");
106 (*info->fprintf_func) (info->stream, "%d", num & REGISTER_MASK);
111 /* Addresses are right-shifted by 2. */
112 if (oper->flags & OPERAND_ADDR)
117 max = (1 << (oper->bits - 1));
120 num = -num & ((1 << oper->bits) - 1);
124 if (info->flags & INSN_HAS_RELOC)
125 (*info->print_address_func) (num & PC_MASK, info);
129 (*info->print_address_func) ((memaddr - num) & PC_MASK, info);
131 (*info->print_address_func) ((memaddr + num) & PC_MASK, info);
136 if (oper->flags & OPERAND_SIGNED)
138 int max = (1 << (oper->bits - 1));
141 num = -num & ((1 << oper->bits) - 1);
142 (*info->fprintf_func) (info->stream, "-");
145 (*info->fprintf_func) (info->stream, "0x%x", num);
151 dis_long (unsigned long insn,
153 struct disassemble_info *info)
156 struct d10v_opcode *op = (struct d10v_opcode *) d10v_opcodes;
157 struct d10v_operand *oper;
163 if ((op->format & LONG_OPCODE)
164 && ((op->mask & insn) == (unsigned long) op->opcode))
167 (*info->fprintf_func) (info->stream, "%s\t", op->name);
169 for (i = 0; op->operands[i]; i++)
171 oper = (struct d10v_operand *) &d10v_operands[op->operands[i]];
172 if (oper->flags == OPERAND_ATPAR)
174 print_operand (oper, insn, op, memaddr, info);
175 if (op->operands[i + 1] && oper->bits
176 && d10v_operands[op->operands[i + 1]].flags != OPERAND_PLUS
177 && d10v_operands[op->operands[i + 1]].flags != OPERAND_MINUS)
178 (*info->fprintf_func) (info->stream, ", ");
186 (*info->fprintf_func) (info->stream, ".long\t0x%08lx", insn);
189 (*info->fprintf_func) (info->stream, ")");
193 dis_2_short (unsigned long insn,
195 struct disassemble_info *info,
200 struct d10v_opcode *op;
201 int match, num_match = 0;
202 struct d10v_operand *oper;
205 ins[0] = (insn & 0x3FFFFFFF) >> 15;
206 ins[1] = insn & 0x00007FFF;
208 for (j = 0; j < 2; j++)
210 op = (struct d10v_opcode *) d10v_opcodes;
214 if ((op->format & SHORT_OPCODE)
215 && ((((unsigned int) op->mask) & ins[j])
216 == (unsigned int) op->opcode))
218 (*info->fprintf_func) (info->stream, "%s\t", op->name);
219 for (i = 0; op->operands[i]; i++)
221 oper = (struct d10v_operand *) &d10v_operands[op->operands[i]];
222 if (oper->flags == OPERAND_ATPAR)
224 print_operand (oper, ins[j], op, memaddr, info);
225 if (op->operands[i + 1] && oper->bits
226 && d10v_operands[op->operands[i + 1]].flags != OPERAND_PLUS
227 && d10v_operands[op->operands[i + 1]].flags != OPERAND_MINUS)
228 (*info->fprintf_func) (info->stream, ", ");
237 (*info->fprintf_func) (info->stream, "unknown");
242 (*info->fprintf_func) (info->stream, "\t->\t");
246 (*info->fprintf_func) (info->stream, "\t<-\t");
250 (*info->fprintf_func) (info->stream, "\t||\t");
259 (*info->fprintf_func) (info->stream, ".long\t0x%08lx", insn);
262 (*info->fprintf_func) (info->stream, ")");
266 print_insn_d10v (bfd_vma memaddr, struct disassemble_info *info)
272 status = (*info->read_memory_func) (memaddr, buffer, 4, info);
275 (*info->memory_error_func) (status, memaddr, info);
278 insn = bfd_getb32 (buffer);
280 status = insn & FM11;
284 dis_2_short (insn, memaddr, info, 2);
287 dis_2_short (insn, memaddr, info, 0);
290 dis_2_short (insn, memaddr, info, 1);
293 dis_long (insn, memaddr, info);