/* ia64-dis.c -- Disassemble ia64 instructions Copyright 1998, 1999, 2000, 2002 Free Software Foundation, Inc. Contributed by David Mosberger-Tang <davidm@hpl.hp.com> This file is part of GDB, GAS, and the GNU binutils. GDB, GAS, and the GNU binutils are free software; you can redistribute them and/or modify them under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GDB, GAS, and the GNU binutils are distributed in the hope that they will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this file; see the file COPYING. If not, write to the Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ #include <assert.h> #include <string.h> #include "dis-asm.h" #include "opcode/ia64.h" #define NELEMS(a) ((int) (sizeof (a) / sizeof (a[0]))) /* Disassemble ia64 instruction. */ /* Return the instruction type for OPCODE found in unit UNIT. */ static enum ia64_insn_type unit_to_type (ia64_insn opcode, enum ia64_unit unit) { enum ia64_insn_type type; int op; op = IA64_OP (opcode); if (op >= 8 && (unit == IA64_UNIT_I || unit == IA64_UNIT_M)) { type = IA64_TYPE_A; } else { switch (unit) { case IA64_UNIT_I: type = IA64_TYPE_I; break; case IA64_UNIT_M: type = IA64_TYPE_M; break; case IA64_UNIT_B: type = IA64_TYPE_B; break; case IA64_UNIT_F: type = IA64_TYPE_F; break; case IA64_UNIT_L: case IA64_UNIT_X: type = IA64_TYPE_X; break; default: type = -1; } } return type; } int print_insn_ia64 (bfd_vma memaddr, struct disassemble_info *info) { ia64_insn t0, t1, slot[3], template, s_bit, insn; int slotnum, j, status, need_comma, retval, slot_multiplier; const struct ia64_operand *odesc; const struct ia64_opcode *idesc; const char *err, *str, *tname; BFD_HOST_U_64_BIT value; bfd_byte bundle[16]; enum ia64_unit unit; char regname[16]; if (info->bytes_per_line == 0) info->bytes_per_line = 6; info->display_endian = info->endian; slot_multiplier = info->bytes_per_line; retval = slot_multiplier; slotnum = (((long) memaddr) & 0xf) / slot_multiplier; if (slotnum > 2) return -1; memaddr -= (memaddr & 0xf); status = (*info->read_memory_func) (memaddr, bundle, sizeof (bundle), info); if (status != 0) { (*info->memory_error_func) (status, memaddr, info); return -1; } /* bundles are always in little-endian byte order */ t0 = bfd_getl64 (bundle); t1 = bfd_getl64 (bundle + 8); s_bit = t0 & 1; template = (t0 >> 1) & 0xf; slot[0] = (t0 >> 5) & 0x1ffffffffffLL; slot[1] = ((t0 >> 46) & 0x3ffff) | ((t1 & 0x7fffff) << 18); slot[2] = (t1 >> 23) & 0x1ffffffffffLL; tname = ia64_templ_desc[template].name; if (slotnum == 0) (*info->fprintf_func) (info->stream, "[%s] ", tname); else (*info->fprintf_func) (info->stream, " "); unit = ia64_templ_desc[template].exec_unit[slotnum]; if (template == 2 && slotnum == 1) { /* skip L slot in MLI template: */ slotnum = 2; retval += slot_multiplier; } insn = slot[slotnum]; if (unit == IA64_UNIT_NIL) goto decoding_failed; idesc = ia64_dis_opcode (insn, unit_to_type (insn, unit)); if (idesc == NULL) goto decoding_failed; /* print predicate, if any: */ if ((idesc->flags & IA64_OPCODE_NO_PRED) || (insn & 0x3f) == 0) (*info->fprintf_func) (info->stream, " "); else (*info->fprintf_func) (info->stream, "(p%02d) ", (int)(insn & 0x3f)); /* now the actual instruction: */ (*info->fprintf_func) (info->stream, "%s", idesc->name); if (idesc->operands[0]) (*info->fprintf_func) (info->stream, " "); need_comma = 0; for (j = 0; j < NELEMS (idesc->operands) && idesc->operands[j]; ++j) { odesc = elf64_ia64_operands + idesc->operands[j]; if (need_comma) (*info->fprintf_func) (info->stream, ","); if (odesc - elf64_ia64_operands == IA64_OPND_IMMU64) { /* special case of 64 bit immediate load: */ value = ((insn >> 13) & 0x7f) | (((insn >> 27) & 0x1ff) << 7) | (((insn >> 22) & 0x1f) << 16) | (((insn >> 21) & 0x1) << 21) | (slot[1] << 22) | (((insn >> 36) & 0x1) << 63); } else if (odesc - elf64_ia64_operands == IA64_OPND_IMMU62) { /* 62-bit immediate for nop.x/break.x */ value = ((slot[1] & 0x1ffffffffffLL) << 21) | (((insn >> 36) & 0x1) << 20) | ((insn >> 6) & 0xfffff); } else if (odesc - elf64_ia64_operands == IA64_OPND_TGT64) { /* 60-bit immediate for long branches. */ value = (((insn >> 13) & 0xfffff) | (((insn >> 36) & 1) << 59) | (((slot[1] >> 2) & 0x7fffffffffLL) << 20)) << 4; } else { err = (*odesc->extract) (odesc, insn, &value); if (err) { (*info->fprintf_func) (info->stream, "%s", err); goto done; } } switch (odesc->class) { case IA64_OPND_CLASS_CST: (*info->fprintf_func) (info->stream, "%s", odesc->str); break; case IA64_OPND_CLASS_REG: if (odesc->str[0] == 'a' && odesc->str[1] == 'r') { switch (value) { case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7: sprintf (regname, "ar.k%u", (unsigned int) value); break; case 16: strcpy (regname, "ar.rsc"); break; case 17: strcpy (regname, "ar.bsp"); break; case 18: strcpy (regname, "ar.bspstore"); break; case 19: strcpy (regname, "ar.rnat"); break; case 32: strcpy (regname, "ar.ccv"); break; case 36: strcpy (regname, "ar.unat"); break; case 40: strcpy (regname, "ar.fpsr"); break; case 44: strcpy (regname, "ar.itc"); break; case 64: strcpy (regname, "ar.pfs"); break; case 65: strcpy (regname, "ar.lc"); break; case 66: strcpy (regname, "ar.ec"); break; default: sprintf (regname, "ar%u", (unsigned int) value); break; } (*info->fprintf_func) (info->stream, "%s", regname); } else (*info->fprintf_func) (info->stream, "%s%d", odesc->str, (int)value); break; case IA64_OPND_CLASS_IND: (*info->fprintf_func) (info->stream, "%s[r%d]", odesc->str, (int)value); break; case IA64_OPND_CLASS_ABS: str = 0; if (odesc - elf64_ia64_operands == IA64_OPND_MBTYPE4) switch (value) { case 0x0: str = "@brcst"; break; case 0x8: str = "@mix"; break; case 0x9: str = "@shuf"; break; case 0xa: str = "@alt"; break; case 0xb: str = "@rev"; break; } if (str) (*info->fprintf_func) (info->stream, "%s", str); else if (odesc->flags & IA64_OPND_FLAG_DECIMAL_SIGNED) (*info->fprintf_func) (info->stream, "%lld", (long long) value); else if (odesc->flags & IA64_OPND_FLAG_DECIMAL_UNSIGNED) (*info->fprintf_func) (info->stream, "%llu", (long long) value); else (*info->fprintf_func) (info->stream, "0x%llx", (long long) value); break; case IA64_OPND_CLASS_REL: (*info->print_address_func) (memaddr + value, info); break; } need_comma = 1; if (j + 1 == idesc->num_outputs) { (*info->fprintf_func) (info->stream, "="); need_comma = 0; } } if (slotnum + 1 == ia64_templ_desc[template].group_boundary || ((slotnum == 2) && s_bit)) (*info->fprintf_func) (info->stream, ";;"); done: ia64_free_opcode ((struct ia64_opcode *)idesc); failed: if (slotnum == 2) retval += 16 - 3*slot_multiplier; return retval; decoding_failed: (*info->fprintf_func) (info->stream, " data8 %#011llx", (long long) insn); goto failed; }