1 /* Disassemble ft32 instructions.
2 Copyright (C) 2013-2017 Free Software Foundation, Inc.
3 Contributed by FTDI (support@ftdichip.com)
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/ft32.h"
28 #include "disassemble.h"
30 extern const ft32_opc_info_t ft32_opc_info[128];
32 static fprintf_ftype fpr;
36 sign_extend(int bit, int value)
38 int onebit = (1 << bit);
39 return (value & (onebit - 1)) - (value & onebit);
43 print_insn_ft32 (bfd_vma addr, struct disassemble_info *info)
46 stream = info->stream;
49 const ft32_opc_info_t *oo;
51 fpr = info->fprintf_func;
53 if ((status = info->read_memory_func (addr, buffer, 4, info)))
56 iword = bfd_getl32 (buffer);
58 for (oo = ft32_opc_info; oo->name; oo++)
59 if ((iword & oo->mask) == oo->bits)
67 fpr (stream, "%08x %s", iword, oo->name);
70 fpr (stream, ".%c ", "bsl"[(iword >> FT32_FLD_DW_BIT) & 3]);
86 imm = ((iword >> FT32_FLD_CB_BIT) & ((1 << FT32_FLD_CB_SIZ) - 1)) << 4;
87 imm |= ((iword >> FT32_FLD_CV_BIT) & ((1 << FT32_FLD_CV_SIZ) - 1));
90 case 0x00: fpr(stream, "nz"); break;
91 case 0x01: fpr(stream, "z"); break;
92 case 0x10: fpr(stream, "ae"); break;
93 case 0x11: fpr(stream, "b"); break;
94 case 0x20: fpr(stream, "no"); break;
95 case 0x21: fpr(stream, "o"); break;
96 case 0x30: fpr(stream, "ns"); break;
97 case 0x31: fpr(stream, "s"); break;
98 case 0x40: fpr(stream, "lt"); break;
99 case 0x41: fpr(stream, "gte"); break;
100 case 0x50: fpr(stream, "lte"); break;
101 case 0x51: fpr(stream, "gt"); break;
102 case 0x60: fpr(stream, "be"); break;
103 case 0x61: fpr(stream, "a"); break;
104 default: fpr(stream, "%d,$r30,%d", (imm >> 4), (imm & 1)); break;
108 imm = (iword >> FT32_FLD_CB_BIT) & ((1 << FT32_FLD_CB_SIZ) - 1);
109 fpr(stream, "%d", imm);
112 fpr(stream, "$r%d", (iword >> FT32_FLD_R_D_BIT) & 0x1f);
115 imm = (iword >> FT32_FLD_CR_BIT) & ((1 << FT32_FLD_CR_SIZ) - 1);
116 fpr(stream, "$r%d", 28 + imm);
119 imm = (iword >> FT32_FLD_CV_BIT) & ((1 << FT32_FLD_CV_SIZ) - 1);
120 fpr(stream, "%d", imm);
123 fpr(stream, "$r%d", (iword >> FT32_FLD_R_1_BIT) & 0x1f);
126 imm = (iword >> FT32_FLD_RIMM_BIT) & ((1 << FT32_FLD_RIMM_SIZ) - 1);
128 fpr(stream, "%d", sign_extend(9, imm));
130 fpr(stream, "$r%d", imm & 0x1f);
133 fpr(stream, "$r%d", (iword >> FT32_FLD_R_2_BIT) & 0x1f);
136 imm = iword & ((1 << FT32_FLD_K20_SIZ) - 1);
137 fpr(stream, "%d", sign_extend(19, imm));
140 imm = (iword & ((1 << FT32_FLD_PA_SIZ) - 1)) << 2;
141 info->print_address_func ((bfd_vma) imm, info);
144 imm = iword & ((1 << FT32_FLD_AA_SIZ) - 1);
145 info->print_address_func ((1 << 23) | (bfd_vma) imm, info);
148 imm = iword & ((1 << FT32_FLD_K16_SIZ) - 1);
149 fpr(stream, "%d", imm);
152 imm = iword & ((1 << FT32_FLD_K8_SIZ) - 1);
153 fpr(stream, "%d", sign_extend(7, imm));
155 case FT32_FLD_R_D_POST:
156 fpr(stream, "$r%d", (iword >> FT32_FLD_R_D_BIT) & 0x1f);
158 case FT32_FLD_R_1_POST:
159 fpr(stream, "$r%d", (iword >> FT32_FLD_R_1_BIT) & 0x1f);
174 fpr (stream, "%08x!", iword);
180 info->memory_error_func (status, addr, info);