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1 /* |
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2 * Copyright (c) 2008, 2016, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 * |
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23 */ |
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24 |
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25 #include "precompiled.hpp" |
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26 #include "asm/macroAssembler.hpp" |
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27 #include "assembler_arm.inline.hpp" |
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28 #include "runtime/icache.hpp" |
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29 |
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30 #define __ _masm-> |
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31 |
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32 #ifdef AARCH64 |
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33 |
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34 static int icache_flush(address addr, int lines, int magic) { |
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35 // TODO-AARCH64 Figure out actual cache line size (mrs Xt, CTR_EL0) |
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36 |
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37 address p = addr; |
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38 for (int i = 0; i < lines; i++, p += ICache::line_size) { |
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39 __asm__ volatile( |
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40 " dc cvau, %[p]" |
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41 : |
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42 : [p] "r" (p) |
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43 : "memory"); |
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44 } |
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45 |
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46 __asm__ volatile( |
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47 " dsb ish" |
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48 : : : "memory"); |
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49 |
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50 p = addr; |
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51 for (int i = 0; i < lines; i++, p += ICache::line_size) { |
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52 __asm__ volatile( |
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53 " ic ivau, %[p]" |
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54 : |
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55 : [p] "r" (p) |
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56 : "memory"); |
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57 } |
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58 |
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59 __asm__ volatile( |
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60 " dsb ish\n\t" |
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61 " isb\n\t" |
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62 : : : "memory"); |
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63 |
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64 return magic; |
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65 } |
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66 |
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67 #else |
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68 |
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69 static int icache_flush(address addr, int lines, int magic) { |
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70 __builtin___clear_cache(addr, addr + (lines << ICache::log2_line_size)); |
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71 return magic; |
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72 } |
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73 |
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74 #endif // AARCH64 |
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75 |
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76 void ICacheStubGenerator::generate_icache_flush(ICache::flush_icache_stub_t* flush_icache_stub) { |
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77 address start = (address)icache_flush; |
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78 |
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79 *flush_icache_stub = (ICache::flush_icache_stub_t)start; |
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80 |
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81 // ICache::invalidate_range() contains explicit condition that the first |
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82 // call is invoked on the generated icache flush stub code range. |
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83 ICache::invalidate_range(start, 0); |
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84 |
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85 { |
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86 // dummy code mark to make the shared code happy |
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87 // (fields that would need to be modified to emulate the correct |
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88 // mark are not accessible) |
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89 StubCodeMark mark(this, "ICache", "fake_stub_for_inlined_icache_flush"); |
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90 __ ret(); |
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91 } |
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92 } |
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93 |
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94 #undef __ |