| 1 | /* tilegx-dis.c. Disassembly routines for the TILE-Gx architecture. |
| 2 | Copyright (C) 2011-2016 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of the GNU opcodes library. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 3 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 19 | MA 02110-1301, USA. */ |
| 20 | |
| 21 | #include "sysdep.h" |
| 22 | #include <stddef.h> |
| 23 | #include <assert.h> |
| 24 | #include "bfd.h" |
| 25 | #include "elf/tilegx.h" |
| 26 | #include "elf-bfd.h" |
| 27 | #include "dis-asm.h" |
| 28 | #include "opcode/tilegx.h" |
| 29 | |
| 30 | |
| 31 | int |
| 32 | print_insn_tilegx (bfd_vma memaddr, disassemble_info *info) |
| 33 | { |
| 34 | struct tilegx_decoded_instruction |
| 35 | decoded[TILEGX_MAX_INSTRUCTIONS_PER_BUNDLE]; |
| 36 | bfd_byte opbuf[TILEGX_BUNDLE_SIZE_IN_BYTES]; |
| 37 | int status, i, num_instructions, num_printed; |
| 38 | tilegx_mnemonic padding_mnemonic; |
| 39 | |
| 40 | status = (*info->read_memory_func) (memaddr, opbuf, |
| 41 | TILEGX_BUNDLE_SIZE_IN_BYTES, info); |
| 42 | if (status != 0) |
| 43 | { |
| 44 | (*info->memory_error_func) (status, memaddr, info); |
| 45 | return -1; |
| 46 | } |
| 47 | |
| 48 | info->bytes_per_line = TILEGX_BUNDLE_SIZE_IN_BYTES; |
| 49 | info->bytes_per_chunk = TILEGX_BUNDLE_SIZE_IN_BYTES; |
| 50 | info->octets_per_byte = 1; |
| 51 | info->display_endian = BFD_ENDIAN_LITTLE; |
| 52 | |
| 53 | /* Parse the instructions in the bundle. */ |
| 54 | num_instructions = |
| 55 | parse_insn_tilegx (bfd_getl64 (opbuf), memaddr, decoded); |
| 56 | |
| 57 | /* Print the instructions in the bundle. */ |
| 58 | info->fprintf_func (info->stream, "{ "); |
| 59 | num_printed = 0; |
| 60 | |
| 61 | /* Determine which nop opcode is used for padding and should be skipped. */ |
| 62 | padding_mnemonic = TILEGX_OPC_FNOP; |
| 63 | for (i = 0; i < num_instructions; i++) |
| 64 | { |
| 65 | if (!decoded[i].opcode->can_bundle) |
| 66 | { |
| 67 | /* Instructions that cannot be bundled are padded out with nops, |
| 68 | rather than fnops. Displaying them is always clutter. */ |
| 69 | padding_mnemonic = TILEGX_OPC_NOP; |
| 70 | break; |
| 71 | } |
| 72 | } |
| 73 | |
| 74 | for (i = 0; i < num_instructions; i++) |
| 75 | { |
| 76 | const struct tilegx_opcode *opcode = decoded[i].opcode; |
| 77 | const char *name; |
| 78 | int j; |
| 79 | |
| 80 | /* Do not print out fnops, unless everything is an fnop, in |
| 81 | which case we will print out just the last one. */ |
| 82 | if (opcode->mnemonic == padding_mnemonic |
| 83 | && (num_printed > 0 || i + 1 < num_instructions)) |
| 84 | continue; |
| 85 | |
| 86 | if (num_printed > 0) |
| 87 | info->fprintf_func (info->stream, " ; "); |
| 88 | ++num_printed; |
| 89 | |
| 90 | name = opcode->name; |
| 91 | if (name == NULL) |
| 92 | name = "<invalid>"; |
| 93 | info->fprintf_func (info->stream, "%s", name); |
| 94 | |
| 95 | for (j = 0; j < opcode->num_operands; j++) |
| 96 | { |
| 97 | bfd_vma num; |
| 98 | const struct tilegx_operand *op; |
| 99 | const char *spr_name; |
| 100 | |
| 101 | if (j > 0) |
| 102 | info->fprintf_func (info->stream, ","); |
| 103 | info->fprintf_func (info->stream, " "); |
| 104 | |
| 105 | num = decoded[i].operand_values[j]; |
| 106 | |
| 107 | op = decoded[i].operands[j]; |
| 108 | switch (op->type) |
| 109 | { |
| 110 | case TILEGX_OP_TYPE_REGISTER: |
| 111 | info->fprintf_func (info->stream, "%s", |
| 112 | tilegx_register_names[(int) num]); |
| 113 | break; |
| 114 | case TILEGX_OP_TYPE_SPR: |
| 115 | spr_name = get_tilegx_spr_name (num); |
| 116 | if (spr_name != NULL) |
| 117 | info->fprintf_func (info->stream, "%s", spr_name); |
| 118 | else |
| 119 | info->fprintf_func (info->stream, "%d", (int)num); |
| 120 | break; |
| 121 | case TILEGX_OP_TYPE_IMMEDIATE: |
| 122 | info->fprintf_func (info->stream, "%d", (int)num); |
| 123 | break; |
| 124 | case TILEGX_OP_TYPE_ADDRESS: |
| 125 | info->print_address_func (num, info); |
| 126 | break; |
| 127 | default: |
| 128 | abort (); |
| 129 | } |
| 130 | } |
| 131 | } |
| 132 | info->fprintf_func (info->stream, " }"); |
| 133 | |
| 134 | return TILEGX_BUNDLE_SIZE_IN_BYTES; |
| 135 | } |