1 /* ia64-dis.c -- Disassemble ia64 instructions
2 Copyright (C) 1998, 1999 Free Software Foundation, Inc.
3 Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
5 This file is part of GDB, GAS, and the GNU binutils.
7 GDB, GAS, and the GNU binutils are free software; you can redistribute
8 them and/or modify them under the terms of the GNU General Public
9 License as published by the Free Software Foundation; either version
10 2, or (at your option) any later version.
12 GDB, GAS, and the GNU binutils are distributed in the hope that they
13 will be useful, but WITHOUT ANY WARRANTY; without even the implied
14 warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
15 the GNU General Public License for more details.
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, 59 Temple Place - Suite 330, Boston, MA
26 #include "opcode/ia64.h"
28 #define NELEMS(a) ((int) (sizeof (a) / sizeof (a[0])))
30 /* Disassemble ia64 instruction. */
32 /* Return the instruction type for OPCODE found in unit UNIT. */
34 static enum ia64_insn_type
35 unit_to_type (ia64_insn opcode, enum ia64_unit unit)
37 enum ia64_insn_type type;
40 op = IA64_OP (opcode);
42 if (op >= 8 && (unit == IA64_UNIT_I || unit == IA64_UNIT_M))
51 type = IA64_TYPE_I; break;
53 type = IA64_TYPE_M; break;
55 type = IA64_TYPE_B; break;
57 type = IA64_TYPE_F; break;
60 type = IA64_TYPE_X; break;
69 print_insn_ia64 (bfd_vma memaddr, struct disassemble_info *info)
71 ia64_insn t0, t1, slot[3], template, 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;
81 if (info->bytes_per_line == 0)
82 info->bytes_per_line = 6;
83 info->display_endian = info->endian;
85 slot_multiplier = info->bytes_per_line;
86 retval = slot_multiplier;
88 slotnum = (((long) memaddr) & 0xf) / slot_multiplier;
92 memaddr -= (memaddr & 0xf);
93 status = (*info->read_memory_func) (memaddr, bundle, sizeof (bundle), info);
96 (*info->memory_error_func) (status, memaddr, info);
99 /* bundles are always in little-endian byte order */
100 t0 = bfd_getl64 (bundle);
101 t1 = bfd_getl64 (bundle + 8);
103 template = (t0 >> 1) & 0xf;
104 slot[0] = (t0 >> 5) & 0x1ffffffffffLL;
105 slot[1] = ((t0 >> 46) & 0x3ffff) | ((t1 & 0x7fffff) << 18);
106 slot[2] = (t1 >> 23) & 0x1ffffffffffLL;
108 tname = ia64_templ_desc[template].name;
110 (*info->fprintf_func) (info->stream, "[%s] ", tname);
112 (*info->fprintf_func) (info->stream, " ", tname);
114 unit = ia64_templ_desc[template].exec_unit[slotnum];
116 if (template == 2 && slotnum == 1)
118 /* skip L slot in MLI template: */
120 retval += slot_multiplier;
123 insn = slot[slotnum];
125 if (unit == IA64_UNIT_NIL)
126 goto decoding_failed;
128 idesc = ia64_dis_opcode (insn, unit_to_type (insn, unit));
130 goto decoding_failed;
132 /* print predicate, if any: */
134 if ((idesc->flags & IA64_OPCODE_NO_PRED)
135 || (insn & 0x3f) == 0)
136 (*info->fprintf_func) (info->stream, " ");
138 (*info->fprintf_func) (info->stream, "(p%02d) ", (int)(insn & 0x3f));
140 /* now the actual instruction: */
142 (*info->fprintf_func) (info->stream, "%s", idesc->name);
143 if (idesc->operands[0])
144 (*info->fprintf_func) (info->stream, " ");
147 for (j = 0; j < NELEMS (idesc->operands) && idesc->operands[j]; ++j)
149 odesc = elf64_ia64_operands + idesc->operands[j];
152 (*info->fprintf_func) (info->stream, ",");
154 if (odesc - elf64_ia64_operands == IA64_OPND_IMMU64)
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);
161 else if (odesc - elf64_ia64_operands == IA64_OPND_IMMU62)
163 /* 62-bit immediate for nop.x/break.x */
164 value = ((slot[1] & 0x1ffffffffffLL) << 21)
165 | (((insn >> 36) & 0x1) << 20)
166 | ((insn >> 6) & 0xfffff);
170 err = (*odesc->extract) (odesc, insn, &value);
173 (*info->fprintf_func) (info->stream, "%s", err);
178 switch (odesc->class)
180 case IA64_OPND_CLASS_CST:
181 (*info->fprintf_func) (info->stream, "%s", odesc->str);
184 case IA64_OPND_CLASS_REG:
185 if (odesc->str[0] == 'a' && odesc->str[1] == 'r')
189 case 0: case 1: case 2: case 3:
190 case 4: case 5: case 6: case 7:
191 sprintf (regname, "ar.k%u", (unsigned int) value);
193 case 16: strcpy (regname, "ar.rsc"); break;
194 case 17: strcpy (regname, "ar.bsp"); break;
195 case 18: strcpy (regname, "ar.bspstore"); break;
196 case 19: strcpy (regname, "ar.rnat"); break;
197 case 32: strcpy (regname, "ar.ccv"); break;
198 case 36: strcpy (regname, "ar.unat"); break;
199 case 40: strcpy (regname, "ar.fpsr"); break;
200 case 44: strcpy (regname, "ar.itc"); break;
201 case 64: strcpy (regname, "ar.pfs"); break;
202 case 65: strcpy (regname, "ar.lc"); break;
203 case 66: strcpy (regname, "ar.ec"); break;
205 sprintf (regname, "ar%u", (unsigned int) value);
208 (*info->fprintf_func) (info->stream, "%s", regname);
211 (*info->fprintf_func) (info->stream, "%s%d", odesc->str, (int)value);
214 case IA64_OPND_CLASS_IND:
215 (*info->fprintf_func) (info->stream, "%s[r%d]", odesc->str, (int)value);
218 case IA64_OPND_CLASS_ABS:
220 if (odesc - elf64_ia64_operands == IA64_OPND_MBTYPE4)
223 case 0x0: str = "@brcst"; break;
224 case 0x8: str = "@mix"; break;
225 case 0x9: str = "@shuf"; break;
226 case 0xa: str = "@alt"; break;
227 case 0xb: str = "@rev"; break;
231 (*info->fprintf_func) (info->stream, "%s", str);
232 else if (odesc->flags & IA64_OPND_FLAG_DECIMAL_SIGNED)
233 (*info->fprintf_func) (info->stream, "%lld", value);
234 else if (odesc->flags & IA64_OPND_FLAG_DECIMAL_UNSIGNED)
235 (*info->fprintf_func) (info->stream, "%llu", value);
237 (*info->fprintf_func) (info->stream, "0x%llx", value);
240 case IA64_OPND_CLASS_REL:
241 (*info->print_address_func) (memaddr + value, info);
246 if (j + 1 == idesc->num_outputs)
248 (*info->fprintf_func) (info->stream, "=");
252 if (slotnum + 1 == ia64_templ_desc[template].group_boundary
253 || ((slotnum == 2) && s_bit))
254 (*info->fprintf_func) (info->stream, ";;");
257 ia64_free_opcode (idesc);
259 retval += 16 - 3*slot_multiplier;
263 (*info->fprintf_func) (info->stream, " data8 %#011llx", insn);