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1 // Copyright (c) 2018, Google Inc.
2 // All rights reserved.
3 //
4 // Redistribution and use in source and binary forms, with or without
5 // modification, are permitted provided that the following conditions are
6 // met:
7 //
8 //     * Redistributions of source code must retain the above copyright
9 // notice, this list of conditions and the following disclaimer.
10 //     * Redistributions in binary form must reproduce the above
11 // copyright notice, this list of conditions and the following disclaimer
12 // in the documentation and/or other materials provided with the
13 // distribution.
14 //     * Neither the name of Google Inc. nor the names of its
15 // contributors may be used to endorse or promote products derived from
16 // this software without specific prior written permission.
17 //
18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 
30 #include "processor/convert_old_arm64_context.h"
31 
32 #include <string.h>
33 
34 namespace google_breakpad {
35 
ConvertOldARM64Context(const MDRawContextARM64_Old & old,MDRawContextARM64 * context)36 void ConvertOldARM64Context(const MDRawContextARM64_Old& old,
37                             MDRawContextARM64* context) {
38   context->context_flags = MD_CONTEXT_ARM64;
39   if (old.context_flags & MD_CONTEXT_ARM64_INTEGER_OLD) {
40     context->context_flags |=
41         MD_CONTEXT_ARM64_INTEGER | MD_CONTEXT_ARM64_CONTROL;
42   }
43   if (old.context_flags & MD_CONTEXT_ARM64_FLOATING_POINT_OLD) {
44     context->context_flags |= MD_CONTEXT_ARM64_FLOATING_POINT;
45   }
46 
47   context->cpsr = old.cpsr;
48 
49   static_assert(sizeof(old.iregs) == sizeof(context->iregs),
50                 "iregs size mismatch");
51   memcpy(context->iregs, old.iregs, sizeof(context->iregs));
52 
53   static_assert(sizeof(old.float_save.regs) == sizeof(context->float_save.regs),
54                 "float_save.regs size mismatch");
55   memcpy(context->float_save.regs,
56          old.float_save.regs,
57          sizeof(context->float_save.regs));
58   context->float_save.fpcr = old.float_save.fpcr;
59   context->float_save.fpsr = old.float_save.fpsr;
60 
61   memset(context->bcr, 0, sizeof(context->bcr));
62   memset(context->bvr, 0, sizeof(context->bvr));
63   memset(context->wcr, 0, sizeof(context->wcr));
64   memset(context->wvr, 0, sizeof(context->wvr));
65 }
66 
67 }  // namespace google_breakpad
68