1 /* Disassemble moxie instructions.
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. */
27 #include "opcode/moxie.h"
30 static fprintf_ftype fpr;
33 /* Macros to extract operands from the instruction word. */
34 #define OP_A(i) ((i >> 4) & 0xf)
35 #define OP_B(i) (i & 0xf)
36 #define INST2OFFSET(o) ((((signed short)((o & ((1<<10)-1))<<6))>>6)<<1)
38 static const char * reg_names[16] =
39 { "$fp", "$sp", "$r0", "$r1", "$r2", "$r3", "$r4", "$r5",
40 "$r6", "$r7", "$r8", "$r9", "$r10", "$r11", "$r12", "$r13" };
43 print_insn_moxie (bfd_vma addr, struct disassemble_info * info)
47 stream = info->stream;
48 const moxie_opc_info_t * opcode;
51 fpr = info->fprintf_func;
53 if ((status = info->read_memory_func (addr, buffer, 2, info)))
55 iword = bfd_getb16 (buffer);
57 /* Form 1 instructions have the high bit set to 0. */
58 if ((iword & (1<<15)) == 0)
60 /* Extract the Form 1 opcode. */
61 opcode = &moxie_form1_opc_info[iword >> 8];
62 switch (opcode->itype)
65 fpr (stream, "%s", opcode->name);
68 fpr (stream, "%s\t%s", opcode->name,
69 reg_names[OP_A(iword)]);
72 fpr (stream, "%s\t%s, %s", opcode->name,
73 reg_names[OP_A(iword)],
74 reg_names[OP_B(iword)]);
79 if ((status = info->read_memory_func (addr + 2, buffer, 4, info)))
81 imm = bfd_getb32 (buffer);
82 fpr (stream, "%s\t%s, 0x%x", opcode->name,
83 reg_names[OP_A(iword)], imm);
90 if ((status = info->read_memory_func (addr + 2, buffer, 4, info)))
92 imm = bfd_getb32 (buffer);
93 fpr (stream, "%s\t0x%x", opcode->name, imm);
100 if ((status = info->read_memory_func (addr + 2, buffer, 4, info)))
102 imm = bfd_getb32 (buffer);
103 fpr (stream, "%s\t", opcode->name);
104 info->print_address_func ((bfd_vma) imm, info);
109 fpr (stream, "%s\t(%s), %s", opcode->name,
110 reg_names[OP_A(iword)], reg_names[OP_B(iword)]);
113 fpr (stream, "%s\t%s, (%s)", opcode->name,
114 reg_names[OP_A(iword)], reg_names[OP_B(iword)]);
119 if ((status = info->read_memory_func (addr + 2, buffer, 4, info)))
121 imm = bfd_getb32 (buffer);
122 fpr (stream, "%s\t0x%x, %s",
123 opcode->name, imm, reg_names[OP_A(iword)]);
130 if ((status = info->read_memory_func (addr+2, buffer, 4, info)))
132 imm = bfd_getb32 (buffer);
133 fpr (stream, "%s\t0x%x(%s), %s", opcode->name,
135 reg_names[OP_A(iword)],
136 reg_names[OP_B(iword)]);
143 if ((status = info->read_memory_func (addr+2, buffer, 4, info)))
145 imm = bfd_getb32 (buffer);
146 fpr (stream, "%s\t%s, 0x%x(%s)",
148 reg_names[OP_A(iword)],
150 reg_names[OP_B(iword)]);
158 else if ((iword & (1<<14)) == 0)
160 /* Extract the Form 2 opcode. */
161 opcode = &moxie_form2_opc_info[(iword >> 12) & 3];
162 switch (opcode->itype)
165 fpr (stream, "%s\t%s, 0x%x",
167 reg_names[(iword >> 8) & 0xf],
168 iword & ((1 << 8) - 1));
171 fpr (stream, "%s", opcode->name);
179 /* Extract the Form 3 opcode. */
180 opcode = &moxie_form3_opc_info[(iword >> 10) & 15];
181 switch (opcode->itype)
184 fpr (stream, "%s\t", opcode->name);
185 info->print_address_func ((bfd_vma) (addr + INST2OFFSET(iword)),
196 info->memory_error_func (status, addr, info);