1/* ia64-dis.c -- Disassemble ia64 instructions 2 Copyright (C) 1998-2017 Free Software Foundation, Inc. 3 Contributed by David Mosberger-Tang <davidm@hpl.hp.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 file; see the file COPYING. If not, write to the 19 Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 20 02110-1301, USA. */ 21 22#include "sysdep.h" 23#include <assert.h> 24 25#include "dis-asm.h" 26#include "opcode/ia64.h" 27 28#define NELEMS(a) ((int) (sizeof (a) / sizeof (a[0]))) 29 30/* Disassemble ia64 instruction. */ 31 32/* Return the instruction type for OPCODE found in unit UNIT. */ 33 34static enum ia64_insn_type 35unit_to_type (ia64_insn opcode, enum ia64_unit unit) 36{ 37 enum ia64_insn_type type; 38 int op; 39 40 op = IA64_OP (opcode); 41 42 if (op >= 8 && (unit == IA64_UNIT_I || unit == IA64_UNIT_M)) 43 { 44 type = IA64_TYPE_A; 45 } 46 else 47 { 48 switch (unit) 49 { 50 case IA64_UNIT_I: 51 type = IA64_TYPE_I; break; 52 case IA64_UNIT_M: 53 type = IA64_TYPE_M; break; 54 case IA64_UNIT_B: 55 type = IA64_TYPE_B; break; 56 case IA64_UNIT_F: 57 type = IA64_TYPE_F; break; 58 case IA64_UNIT_L: 59 case IA64_UNIT_X: 60 type = IA64_TYPE_X; break; 61 default: 62 type = -1; 63 } 64 } 65 return type; 66} 67 68int 69print_insn_ia64 (bfd_vma memaddr, struct disassemble_info *info) 70{ 71 ia64_insn t0, t1, slot[3], template_val, s_bit, insn; 72 int slotnum, j, status, need_comma, retval, slot_multiplier; 73 const struct ia64_operand *odesc; 74 const struct ia64_opcode *idesc; 75 const char *err, *str, *tname; 76 BFD_HOST_U_64_BIT value; 77 bfd_byte bundle[16]; 78 enum ia64_unit unit; 79 char regname[16]; 80 81 if (info->bytes_per_line == 0) 82 info->bytes_per_line = 6; 83 info->display_endian = info->endian; 84 85 slot_multiplier = info->bytes_per_line; 86 retval = slot_multiplier; 87 88 slotnum = (((long) memaddr) & 0xf) / slot_multiplier; 89 if (slotnum > 2) 90 return -1; 91 92 memaddr -= (memaddr & 0xf); 93 status = (*info->read_memory_func) (memaddr, bundle, sizeof (bundle), info); 94 if (status != 0) 95 { 96 (*info->memory_error_func) (status, memaddr, info); 97 return -1; 98 } 99 /* bundles are always in little-endian byte order */ 100 t0 = bfd_getl64 (bundle); 101 t1 = bfd_getl64 (bundle + 8); 102 s_bit = t0 & 1; 103 template_val = (t0 >> 1) & 0xf; 104 slot[0] = (t0 >> 5) & 0x1ffffffffffLL; 105 slot[1] = ((t0 >> 46) & 0x3ffff) | ((t1 & 0x7fffff) << 18); 106 slot[2] = (t1 >> 23) & 0x1ffffffffffLL; 107 108 tname = ia64_templ_desc[template_val].name; 109 if (slotnum == 0) 110 (*info->fprintf_func) (info->stream, "[%s] ", tname); 111 else 112 (*info->fprintf_func) (info->stream, " "); 113 114 unit = ia64_templ_desc[template_val].exec_unit[slotnum]; 115 116 if (template_val == 2 && slotnum == 1) 117 { 118 /* skip L slot in MLI template: */ 119 slotnum = 2; 120 retval += slot_multiplier; 121 } 122 123 insn = slot[slotnum]; 124 125 if (unit == IA64_UNIT_NIL) 126 goto decoding_failed; 127 128 idesc = ia64_dis_opcode (insn, unit_to_type (insn, unit)); 129 if (idesc == NULL) 130 goto decoding_failed; 131 132 /* print predicate, if any: */ 133 134 if ((idesc->flags & IA64_OPCODE_NO_PRED) 135 || (insn & 0x3f) == 0) 136 (*info->fprintf_func) (info->stream, " "); 137 else 138 (*info->fprintf_func) (info->stream, "(p%02d) ", (int)(insn & 0x3f)); 139 140 /* now the actual instruction: */ 141 142 (*info->fprintf_func) (info->stream, "%s", idesc->name); 143 if (idesc->operands[0]) 144 (*info->fprintf_func) (info->stream, " "); 145 146 need_comma = 0; 147 for (j = 0; j < NELEMS (idesc->operands) && idesc->operands[j]; ++j) 148 { 149 odesc = elf64_ia64_operands + idesc->operands[j]; 150 151 if (need_comma) 152 (*info->fprintf_func) (info->stream, ","); 153 154 if (odesc - elf64_ia64_operands == IA64_OPND_IMMU64) 155 { 156 /* special case of 64 bit immediate load: */ 157 value = ((insn >> 13) & 0x7f) | (((insn >> 27) & 0x1ff) << 7) 158 | (((insn >> 22) & 0x1f) << 16) | (((insn >> 21) & 0x1) << 21) 159 | (slot[1] << 22) | (((insn >> 36) & 0x1) << 63); 160 } 161 else if (odesc - elf64_ia64_operands == IA64_OPND_IMMU62) 162 { 163 /* 62-bit immediate for nop.x/break.x */ 164 value = ((slot[1] & 0x1ffffffffffLL) << 21) 165 | (((insn >> 36) & 0x1) << 20) 166 | ((insn >> 6) & 0xfffff); 167 } 168 else if (odesc - elf64_ia64_operands == IA64_OPND_TGT64) 169 { 170 /* 60-bit immediate for long branches. */ 171 value = (((insn >> 13) & 0xfffff) 172 | (((insn >> 36) & 1) << 59) 173 | (((slot[1] >> 2) & 0x7fffffffffLL) << 20)) << 4; 174 } 175 else 176 { 177 err = (*odesc->extract) (odesc, insn, &value); 178 if (err) 179 { 180 (*info->fprintf_func) (info->stream, "%s", err); 181 goto done; 182 } 183 } 184 185 switch (odesc->op_class) 186 { 187 case IA64_OPND_CLASS_CST: 188 (*info->fprintf_func) (info->stream, "%s", odesc->str); 189 break; 190 191 case IA64_OPND_CLASS_REG: 192 if (odesc->str[0] == 'a' && odesc->str[1] == 'r') 193 { 194 switch (value) 195 { 196 case 0: case 1: case 2: case 3: 197 case 4: case 5: case 6: case 7: 198 sprintf (regname, "ar.k%u", (unsigned int) value); 199 break; 200 case 16: strcpy (regname, "ar.rsc"); break; 201 case 17: strcpy (regname, "ar.bsp"); break; 202 case 18: strcpy (regname, "ar.bspstore"); break; 203 case 19: strcpy (regname, "ar.rnat"); break; 204 case 21: strcpy (regname, "ar.fcr"); break; 205 case 24: strcpy (regname, "ar.eflag"); break; 206 case 25: strcpy (regname, "ar.csd"); break; 207 case 26: strcpy (regname, "ar.ssd"); break; 208 case 27: strcpy (regname, "ar.cflg"); break; 209 case 28: strcpy (regname, "ar.fsr"); break; 210 case 29: strcpy (regname, "ar.fir"); break; 211 case 30: strcpy (regname, "ar.fdr"); break; 212 case 32: strcpy (regname, "ar.ccv"); break; 213 case 36: strcpy (regname, "ar.unat"); break; 214 case 40: strcpy (regname, "ar.fpsr"); break; 215 case 44: strcpy (regname, "ar.itc"); break; 216 case 45: strcpy (regname, "ar.ruc"); break; 217 case 64: strcpy (regname, "ar.pfs"); break; 218 case 65: strcpy (regname, "ar.lc"); break; 219 case 66: strcpy (regname, "ar.ec"); break; 220 default: 221 sprintf (regname, "ar%u", (unsigned int) value); 222 break; 223 } 224 (*info->fprintf_func) (info->stream, "%s", regname); 225 } 226 else if (odesc->str[0] == 'c' && odesc->str[1] == 'r') 227 { 228 switch (value) 229 { 230 case 0: strcpy (regname, "cr.dcr"); break; 231 case 1: strcpy (regname, "cr.itm"); break; 232 case 2: strcpy (regname, "cr.iva"); break; 233 case 8: strcpy (regname, "cr.pta"); break; 234 case 16: strcpy (regname, "cr.ipsr"); break; 235 case 17: strcpy (regname, "cr.isr"); break; 236 case 19: strcpy (regname, "cr.iip"); break; 237 case 20: strcpy (regname, "cr.ifa"); break; 238 case 21: strcpy (regname, "cr.itir"); break; 239 case 22: strcpy (regname, "cr.iipa"); break; 240 case 23: strcpy (regname, "cr.ifs"); break; 241 case 24: strcpy (regname, "cr.iim"); break; 242 case 25: strcpy (regname, "cr.iha"); break; 243 case 26: strcpy (regname, "cr.iib0"); break; 244 case 27: strcpy (regname, "cr.iib1"); break; 245 case 64: strcpy (regname, "cr.lid"); break; 246 case 65: strcpy (regname, "cr.ivr"); break; 247 case 66: strcpy (regname, "cr.tpr"); break; 248 case 67: strcpy (regname, "cr.eoi"); break; 249 case 68: strcpy (regname, "cr.irr0"); break; 250 case 69: strcpy (regname, "cr.irr1"); break; 251 case 70: strcpy (regname, "cr.irr2"); break; 252 case 71: strcpy (regname, "cr.irr3"); break; 253 case 72: strcpy (regname, "cr.itv"); break; 254 case 73: strcpy (regname, "cr.pmv"); break; 255 case 74: strcpy (regname, "cr.cmcv"); break; 256 case 80: strcpy (regname, "cr.lrr0"); break; 257 case 81: strcpy (regname, "cr.lrr1"); break; 258 default: 259 sprintf (regname, "cr%u", (unsigned int) value); 260 break; 261 } 262 (*info->fprintf_func) (info->stream, "%s", regname); 263 } 264 else 265 (*info->fprintf_func) (info->stream, "%s%d", odesc->str, (int)value); 266 break; 267 268 case IA64_OPND_CLASS_IND: 269 (*info->fprintf_func) (info->stream, "%s[r%d]", odesc->str, (int)value); 270 break; 271 272 case IA64_OPND_CLASS_ABS: 273 str = 0; 274 if (odesc - elf64_ia64_operands == IA64_OPND_MBTYPE4) 275 switch (value) 276 { 277 case 0x0: str = "@brcst"; break; 278 case 0x8: str = "@mix"; break; 279 case 0x9: str = "@shuf"; break; 280 case 0xa: str = "@alt"; break; 281 case 0xb: str = "@rev"; break; 282 } 283 284 if (str) 285 (*info->fprintf_func) (info->stream, "%s", str); 286 else if (odesc->flags & IA64_OPND_FLAG_DECIMAL_SIGNED) 287 (*info->fprintf_func) (info->stream, "%lld", (long long) value); 288 else if (odesc->flags & IA64_OPND_FLAG_DECIMAL_UNSIGNED) 289 (*info->fprintf_func) (info->stream, "%llu", (long long) value); 290 else 291 (*info->fprintf_func) (info->stream, "0x%llx", (long long) value); 292 break; 293 294 case IA64_OPND_CLASS_REL: 295 (*info->print_address_func) (memaddr + value, info); 296 break; 297 } 298 299 need_comma = 1; 300 if (j + 1 == idesc->num_outputs) 301 { 302 (*info->fprintf_func) (info->stream, "="); 303 need_comma = 0; 304 } 305 } 306 if (slotnum + 1 == ia64_templ_desc[template_val].group_boundary 307 || ((slotnum == 2) && s_bit)) 308 (*info->fprintf_func) (info->stream, ";;"); 309 310 done: 311 ia64_free_opcode ((struct ia64_opcode *)idesc); 312 failed: 313 if (slotnum == 2) 314 retval += 16 - 3*slot_multiplier; 315 return retval; 316 317 decoding_failed: 318 (*info->fprintf_func) (info->stream, " data8 %#011llx", (long long) insn); 319 goto failed; 320} 321