| 1 | /* Copyright (C) 2014-2020 Free Software Foundation, Inc. |
| 2 | |
| 3 | Contributed by Intel Corp. <markus.t.metzger@intel.com> |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program 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 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public 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, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #include "common-defs.h" |
| 21 | #include "btrace-common.h" |
| 22 | |
| 23 | |
| 24 | /* See btrace-common.h. */ |
| 25 | |
| 26 | const char * |
| 27 | btrace_format_string (enum btrace_format format) |
| 28 | { |
| 29 | switch (format) |
| 30 | { |
| 31 | case BTRACE_FORMAT_NONE: |
| 32 | return _("No or unknown format"); |
| 33 | |
| 34 | case BTRACE_FORMAT_BTS: |
| 35 | return _("Branch Trace Store"); |
| 36 | |
| 37 | case BTRACE_FORMAT_PT: |
| 38 | return _("Intel Processor Trace"); |
| 39 | } |
| 40 | |
| 41 | internal_error (__FILE__, __LINE__, _("Unknown branch trace format")); |
| 42 | } |
| 43 | |
| 44 | /* See btrace-common.h. */ |
| 45 | |
| 46 | const char * |
| 47 | btrace_format_short_string (enum btrace_format format) |
| 48 | { |
| 49 | switch (format) |
| 50 | { |
| 51 | case BTRACE_FORMAT_NONE: |
| 52 | return "unknown"; |
| 53 | |
| 54 | case BTRACE_FORMAT_BTS: |
| 55 | return "bts"; |
| 56 | |
| 57 | case BTRACE_FORMAT_PT: |
| 58 | return "pt"; |
| 59 | } |
| 60 | |
| 61 | internal_error (__FILE__, __LINE__, _("Unknown branch trace format")); |
| 62 | } |
| 63 | |
| 64 | /* See btrace-common.h. */ |
| 65 | |
| 66 | void |
| 67 | btrace_data::fini () |
| 68 | { |
| 69 | switch (format) |
| 70 | { |
| 71 | case BTRACE_FORMAT_NONE: |
| 72 | /* Nothing to do. */ |
| 73 | return; |
| 74 | |
| 75 | case BTRACE_FORMAT_BTS: |
| 76 | delete variant.bts.blocks; |
| 77 | variant.bts.blocks = nullptr; |
| 78 | return; |
| 79 | |
| 80 | case BTRACE_FORMAT_PT: |
| 81 | xfree (variant.pt.data); |
| 82 | return; |
| 83 | } |
| 84 | |
| 85 | internal_error (__FILE__, __LINE__, _("Unkown branch trace format.")); |
| 86 | } |
| 87 | |
| 88 | /* See btrace-common.h. */ |
| 89 | |
| 90 | bool |
| 91 | btrace_data::empty () const |
| 92 | { |
| 93 | switch (format) |
| 94 | { |
| 95 | case BTRACE_FORMAT_NONE: |
| 96 | return true; |
| 97 | |
| 98 | case BTRACE_FORMAT_BTS: |
| 99 | return variant.bts.blocks->empty (); |
| 100 | |
| 101 | case BTRACE_FORMAT_PT: |
| 102 | return (variant.pt.size == 0); |
| 103 | } |
| 104 | |
| 105 | internal_error (__FILE__, __LINE__, _("Unkown branch trace format.")); |
| 106 | } |
| 107 | |
| 108 | /* See btrace-common.h. */ |
| 109 | |
| 110 | void |
| 111 | btrace_data::clear () |
| 112 | { |
| 113 | fini (); |
| 114 | format = BTRACE_FORMAT_NONE; |
| 115 | } |
| 116 | |
| 117 | /* See btrace-common.h. */ |
| 118 | |
| 119 | int |
| 120 | btrace_data_append (struct btrace_data *dst, |
| 121 | const struct btrace_data *src) |
| 122 | { |
| 123 | switch (src->format) |
| 124 | { |
| 125 | case BTRACE_FORMAT_NONE: |
| 126 | return 0; |
| 127 | |
| 128 | case BTRACE_FORMAT_BTS: |
| 129 | switch (dst->format) |
| 130 | { |
| 131 | default: |
| 132 | return -1; |
| 133 | |
| 134 | case BTRACE_FORMAT_NONE: |
| 135 | dst->format = BTRACE_FORMAT_BTS; |
| 136 | dst->variant.bts.blocks = new std::vector<btrace_block>; |
| 137 | |
| 138 | /* Fall-through. */ |
| 139 | case BTRACE_FORMAT_BTS: |
| 140 | { |
| 141 | unsigned int blk; |
| 142 | |
| 143 | /* We copy blocks in reverse order to have the oldest block at |
| 144 | index zero. */ |
| 145 | blk = src->variant.bts.blocks->size (); |
| 146 | while (blk != 0) |
| 147 | { |
| 148 | const btrace_block &block |
| 149 | = src->variant.bts.blocks->at (--blk); |
| 150 | dst->variant.bts.blocks->push_back (block); |
| 151 | } |
| 152 | } |
| 153 | } |
| 154 | return 0; |
| 155 | |
| 156 | case BTRACE_FORMAT_PT: |
| 157 | switch (dst->format) |
| 158 | { |
| 159 | default: |
| 160 | return -1; |
| 161 | |
| 162 | case BTRACE_FORMAT_NONE: |
| 163 | dst->format = BTRACE_FORMAT_PT; |
| 164 | dst->variant.pt.data = NULL; |
| 165 | dst->variant.pt.size = 0; |
| 166 | |
| 167 | /* fall-through. */ |
| 168 | case BTRACE_FORMAT_PT: |
| 169 | { |
| 170 | gdb_byte *data; |
| 171 | size_t size; |
| 172 | |
| 173 | size = src->variant.pt.size + dst->variant.pt.size; |
| 174 | data = (gdb_byte *) xmalloc (size); |
| 175 | |
| 176 | if (dst->variant.pt.size > 0) |
| 177 | memcpy (data, dst->variant.pt.data, dst->variant.pt.size); |
| 178 | memcpy (data + dst->variant.pt.size, src->variant.pt.data, |
| 179 | src->variant.pt.size); |
| 180 | |
| 181 | xfree (dst->variant.pt.data); |
| 182 | |
| 183 | dst->variant.pt.data = data; |
| 184 | dst->variant.pt.size = size; |
| 185 | } |
| 186 | } |
| 187 | return 0; |
| 188 | } |
| 189 | |
| 190 | internal_error (__FILE__, __LINE__, _("Unkown branch trace format.")); |
| 191 | } |