1 /* Disassemble D10V instructions.
2 Copyright (C) 1996 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21 #include "opcode/d10v.h"
24 static void dis_2_short PARAMS ((unsigned long insn, bfd_vma memaddr,
25 struct disassemble_info *info, int order));
26 static void dis_long PARAMS ((unsigned long insn, bfd_vma memaddr,
27 struct disassemble_info *info));
30 print_insn_d10v (memaddr, info)
32 struct disassemble_info *info;
38 status = (*info->read_memory_func) (memaddr, buffer, 4, info);
41 (*info->memory_error_func) (status, memaddr, info);
44 insn = bfd_getb32 (buffer);
49 dis_2_short (insn, memaddr, info, 2);
52 dis_2_short (insn, memaddr, info, 0);
55 dis_2_short (insn, memaddr, info, 1);
58 dis_long (insn, memaddr, info);
65 print_operand (oper, insn, op, memaddr, info)
66 struct d10v_operand *oper;
68 struct d10v_opcode *op;
70 struct disassemble_info *info;
74 if (oper->flags == OPERAND_ATMINUS)
76 (*info->fprintf_func) (info->stream, "@-");
79 if (oper->flags == OPERAND_MINUS)
81 (*info->fprintf_func) (info->stream, "-");
84 if (oper->flags == OPERAND_PLUS)
86 (*info->fprintf_func) (info->stream, "+");
89 if (oper->flags == OPERAND_ATSIGN)
91 (*info->fprintf_func) (info->stream, "@");
94 if (oper->flags == OPERAND_ATPAR)
96 (*info->fprintf_func) (info->stream, "@(");
102 /* the LONG_L format shifts registers over by 15 */
103 if (op->format == LONG_L && (oper->flags & OPERAND_REG))
106 num = (insn >> shift) & (0x7FFFFFFF >> (31 - oper->bits));
108 if (oper->flags & OPERAND_REG)
112 num += oper->flags & (OPERAND_ACC|OPERAND_FLAG|OPERAND_CONTROL);
113 for (i=0;i<reg_name_cnt();i++)
115 if (num == pre_defined_registers[i].value)
117 if (pre_defined_registers[i].pname)
118 (*info->fprintf_func) (info->stream, "%s",pre_defined_registers[i].pname);
120 (*info->fprintf_func) (info->stream, "%s",pre_defined_registers[i].name);
127 /* this would only get executed if a register was not in the
129 if (oper->flags & OPERAND_ACC)
130 (*info->fprintf_func) (info->stream, "a");
131 else if (oper->flags & OPERAND_CONTROL)
132 (*info->fprintf_func) (info->stream, "cr");
133 else if(oper->flags & OPERAND_REG)
134 (*info->fprintf_func) (info->stream, "r");
135 (*info->fprintf_func) (info->stream, "%d",num);
140 /* addresses are right-shifted by 2 */
141 if (oper->flags & OPERAND_ADDR)
145 max = (1 << (oper->bits - 1));
148 num = -num & (max-1);
153 (*info->print_address_func) (memaddr - num, info);
155 (*info->print_address_func) (memaddr + num, info);
159 if (oper->flags & OPERAND_SIGNED)
161 int max = (1 << (oper->bits - 1));
166 (*info->fprintf_func) (info->stream, "-");
169 (*info->fprintf_func) (info->stream, "0x%x",num);
176 dis_long (insn, memaddr, info)
179 struct disassemble_info *info;
183 struct d10v_opcode *op = (struct d10v_opcode *)d10v_opcodes;
184 struct d10v_operand *oper;
189 if ((op->format & LONG_OPCODE) && ((op->mask & insn) == op->opcode))
191 (*info->fprintf_func) (info->stream, "%s\t", op->name);
192 for ( i=0; op->operands[i]; i++)
194 oper = (struct d10v_operand *)&d10v_operands[op->operands[i]];
195 if (oper->flags == OPERAND_ATPAR)
197 print_operand (oper, insn, op, memaddr, info);
198 if (op->operands[i+1] && oper->bits &&
199 d10v_operands[op->operands[i+1]].flags != OPERAND_PLUS &&
200 d10v_operands[op->operands[i+1]].flags != OPERAND_MINUS)
201 (*info->fprintf_func) (info->stream, ", ");
208 (*info->fprintf_func) (info->stream, ")");
212 dis_2_short (insn, memaddr, info, order)
215 struct disassemble_info *info;
221 struct d10v_opcode *op;
223 int match, num_match=0;
224 struct d10v_operand *oper;
227 ins[0] = (insn & 0x3FFFFFFF) >> 15;
228 ins[1] = insn & 0x00007FFF;
232 op = (struct d10v_opcode *)d10v_opcodes;
236 if ((op->format & SHORT_OPCODE) && ((op->mask & ins[j]) == op->opcode))
238 (*info->fprintf_func) (info->stream, "%s\t",op->name);
239 for (i=0; op->operands[i]; i++)
241 oper = (struct d10v_operand *)&d10v_operands[op->operands[i]];
242 if (oper->flags == OPERAND_ATPAR)
244 print_operand (oper, ins[j], op, memaddr, info);
245 if (op->operands[i+1] && oper->bits &&
246 d10v_operands[op->operands[i+1]].flags != OPERAND_PLUS &&
247 d10v_operands[op->operands[i+1]].flags != OPERAND_MINUS)
248 (*info->fprintf_func) (info->stream, ", ");
257 (*info->fprintf_func) (info->stream, "unknown");
262 (*info->fprintf_func) (info->stream, "\t->\t");
266 (*info->fprintf_func) (info->stream, "\t<-\t");
270 (*info->fprintf_func) (info->stream, "\t||\t");
279 (*info->fprintf_func) (info->stream, ".long\t0x%08x",insn);
282 (*info->fprintf_func) (info->stream, ")");