1 /* Disassemble ft32 instructions. 2 Copyright (C) 2013-2016 Free Software Foundation, Inc. 3 Contributed by FTDI (support (at) ftdichip.com) 4 5 This file is part of the GNU opcodes library. 6 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) 10 any later version. 11 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. 16 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. */ 21 22 #include "sysdep.h" 23 #include <stdio.h> 24 #define STATIC_TABLE 25 #define DEFINE_TABLE 26 27 #include "opcode/ft32.h" 28 #include "dis-asm.h" 29 30 extern const ft32_opc_info_t ft32_opc_info[128]; 31 32 static fprintf_ftype fpr; 33 static void *stream; 34 35 int 36 print_insn_ft32 (bfd_vma addr, struct disassemble_info *info) 37 { 38 int status; 39 stream = info->stream; 40 bfd_byte buffer[4]; 41 unsigned int iword; 42 const ft32_opc_info_t *oo; 43 44 fpr = info->fprintf_func; 45 46 if ((status = info->read_memory_func (addr, buffer, 4, info))) 47 goto fail; 48 49 iword = bfd_getl32 (buffer); 50 51 for (oo = ft32_opc_info; oo->name; oo++) 52 if ((iword & oo->mask) == oo->bits) 53 break; 54 55 if (oo->name) 56 { 57 int f = oo->fields; 58 int imm; 59 60 fpr (stream, "%08x %s", iword, oo->name); 61 if (oo->dw) 62 { 63 fpr (stream, ".%c ", "bsl"[(iword >> FT32_FLD_DW_BIT) & 3]); 64 } 65 else 66 { 67 fpr (stream, " "); 68 } 69 70 while (f) 71 { 72 int lobit = f & -f; 73 if (f & lobit) 74 { 75 switch (lobit) 76 { 77 case FT32_FLD_CBCRCV: 78 // imm is {CB, CV} 79 imm = ((iword >> FT32_FLD_CB_BIT) & ((1 << FT32_FLD_CB_SIZ) - 1)) << 4; 80 imm |= ((iword >> FT32_FLD_CV_BIT) & ((1 << FT32_FLD_CV_SIZ) - 1)); 81 switch (imm) 82 { 83 case 0x00: fpr(stream, "nz"); break; 84 case 0x01: fpr(stream, "z"); break; 85 case 0x10: fpr(stream, "ae"); break; 86 case 0x11: fpr(stream, "b"); break; 87 case 0x20: fpr(stream, "no"); break; 88 case 0x21: fpr(stream, "o"); break; 89 case 0x30: fpr(stream, "ns"); break; 90 case 0x31: fpr(stream, "s"); break; 91 case 0x40: fpr(stream, "lt"); break; 92 case 0x41: fpr(stream, "gte"); break; 93 case 0x50: fpr(stream, "lte"); break; 94 case 0x51: fpr(stream, "gt"); break; 95 case 0x60: fpr(stream, "be"); break; 96 case 0x61: fpr(stream, "a"); break; 97 default: fpr(stream, "%d,$r30,%d", (imm >> 4), (imm & 1)); break; 98 } 99 break; 100 case FT32_FLD_CB: 101 imm = (iword >> FT32_FLD_CB_BIT) & ((1 << FT32_FLD_CB_SIZ) - 1); 102 fpr(stream, "%d", imm); 103 break; 104 case FT32_FLD_R_D: 105 fpr(stream, "$r%d", (iword >> FT32_FLD_R_D_BIT) & 0x1f); 106 break; 107 case FT32_FLD_CR: 108 imm = (iword >> FT32_FLD_CR_BIT) & ((1 << FT32_FLD_CR_SIZ) - 1); 109 fpr(stream, "$r%d", 28 + imm); 110 break; 111 case FT32_FLD_CV: 112 imm = (iword >> FT32_FLD_CV_BIT) & ((1 << FT32_FLD_CV_SIZ) - 1); 113 fpr(stream, "%d", imm); 114 break; 115 case FT32_FLD_R_1: 116 fpr(stream, "$r%d", (iword >> FT32_FLD_R_1_BIT) & 0x1f); 117 break; 118 case FT32_FLD_RIMM: 119 imm = (iword >> FT32_FLD_RIMM_BIT) & ((1 << FT32_FLD_RIMM_SIZ) - 1); 120 if (imm & 0x400) 121 info->print_address_func ((bfd_vma) imm & 0x3ff, info); 122 else 123 fpr(stream, "$r%d", imm & 0x1f); 124 break; 125 case FT32_FLD_R_2: 126 fpr(stream, "$r%d", (iword >> FT32_FLD_R_2_BIT) & 0x1f); 127 break; 128 case FT32_FLD_K20: 129 imm = iword & ((1 << FT32_FLD_K20_SIZ) - 1); 130 info->print_address_func ((bfd_vma) imm, info); 131 break; 132 case FT32_FLD_PA: 133 imm = (iword & ((1 << FT32_FLD_PA_SIZ) - 1)) << 2; 134 info->print_address_func ((bfd_vma) imm, info); 135 break; 136 case FT32_FLD_AA: 137 imm = iword & ((1 << FT32_FLD_AA_SIZ) - 1); 138 info->print_address_func ((bfd_vma) imm, info); 139 break; 140 break; 141 case FT32_FLD_K16: 142 imm = iword & ((1 << FT32_FLD_K16_SIZ) - 1); 143 info->print_address_func ((bfd_vma) imm, info); 144 break; 145 case FT32_FLD_K8: 146 imm = iword & ((1 << FT32_FLD_K8_SIZ) - 1); 147 info->print_address_func ((bfd_vma) imm, info); 148 break; 149 break; 150 case FT32_FLD_R_D_POST: 151 fpr(stream, "$r%d", (iword >> FT32_FLD_R_D_BIT) & 0x1f); 152 break; 153 case FT32_FLD_R_1_POST: 154 fpr(stream, "$r%d", (iword >> FT32_FLD_R_1_BIT) & 0x1f); 155 break; 156 default: 157 break; 158 } 159 f &= ~lobit; 160 if (f) 161 { 162 fpr(stream, ","); 163 } 164 } 165 } 166 } 167 else 168 { 169 fpr (stream, "%08x!", iword); 170 } 171 172 return 4; 173 174 fail: 175 info->memory_error_func (status, addr, info); 176 return -1; 177 } 178
