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1 /* Copyright (C) 2012-2017 Free Software Foundation, Inc.
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2 Contributed by ARM Ltd.
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3
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4 This file is part of GCC.
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5
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6 GCC is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 3, or (at your option)
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9 any later version.
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10
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11 GCC is distributed in the hope that it will be useful, but
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12 WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 General Public License for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with GCC; see the file COPYING3. If not see
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18 <http://www.gnu.org/licenses/>. */
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19
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20 /* This is a list of ISA extentsions in AArch64.
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21
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22 Before using #include to read this file, define a macro:
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23
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24 AARCH64_OPT_EXTENSION(EXT_NAME, FLAG_CANONICAL, FLAGS_ON, FLAGS_OFF, FEATURE_STRING)
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25
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26 EXT_NAME is the name of the extension, represented as a string constant.
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27 FLAGS_CANONICAL is the canonical internal name for this flag.
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28 FLAGS_ON are the bitwise-or of the features that enabling the extension
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29 adds, or zero if enabling this extension has no effect on other features.
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30 FLAGS_OFF are the bitwise-or of the features that disabling the extension
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31 removes, or zero if disabling this extension has no effect on other
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32 features.
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33 FEAT_STRING is a string containing the entries in the 'Features' field of
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34 /proc/cpuinfo on a GNU/Linux system that correspond to this architecture
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35 extension being available. Sometimes multiple entries are needed to enable
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36 the extension (for example, the 'crypto' extension depends on four
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37 entries: aes, pmull, sha1, sha2 being present). In that case this field
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38 should contain a space (" ") separated list of the strings in 'Features'
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39 that are required. Their order is not important. */
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40
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41 /* Enabling "fp" just enables "fp".
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42 Disabling "fp" also disables "simd", "crypto" and "fp16". */
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43 AARCH64_OPT_EXTENSION("fp", AARCH64_FL_FP, 0, AARCH64_FL_SIMD | AARCH64_FL_CRYPTO | AARCH64_FL_F16, "fp")
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44
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45 /* Enabling "simd" also enables "fp".
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46 Disabling "simd" also disables "crypto" and "dotprod". */
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47 AARCH64_OPT_EXTENSION("simd", AARCH64_FL_SIMD, AARCH64_FL_FP, AARCH64_FL_CRYPTO | AARCH64_FL_DOTPROD, "asimd")
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48
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49 /* Enabling "crypto" also enables "fp", "simd".
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50 Disabling "crypto" just disables "crypto". */
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51 AARCH64_OPT_EXTENSION("crypto", AARCH64_FL_CRYPTO, AARCH64_FL_FP | AARCH64_FL_SIMD, 0, "aes pmull sha1 sha2")
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52
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53 /* Enabling or disabling "crc" only changes "crc". */
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54 AARCH64_OPT_EXTENSION("crc", AARCH64_FL_CRC, 0, 0, "crc32")
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55
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56 /* Enabling or disabling "lse" only changes "lse". */
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57 AARCH64_OPT_EXTENSION("lse", AARCH64_FL_LSE, 0, 0, "atomics")
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58
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59 /* Enabling "fp16" also enables "fp".
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60 Disabling "fp16" just disables "fp16". */
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61 AARCH64_OPT_EXTENSION("fp16", AARCH64_FL_F16, AARCH64_FL_FP, 0, "fphp asimdhp")
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62
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63 /* Enabling or disabling "rcpc" only changes "rcpc". */
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64 AARCH64_OPT_EXTENSION("rcpc", AARCH64_FL_RCPC, 0, 0, "lrcpc")
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65
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66 /* Enabling "rdma" also enables "fp", "simd".
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67 Disabling "rdma" just disables "rdma". */
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68 AARCH64_OPT_EXTENSION("rdma", AARCH64_FL_RDMA, AARCH64_FL_FP | AARCH64_FL_SIMD, 0, "asimdrdm")
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69
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70 /* Enabling "dotprod" also enables "simd".
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71 Disabling "dotprod" only disables "dotprod". */
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72 AARCH64_OPT_EXTENSION("dotprod", AARCH64_FL_DOTPROD, AARCH64_FL_SIMD, 0, "asimddp")
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73
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74 #undef AARCH64_OPT_EXTENSION
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