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1 /*
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2
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3 Package: dyncall
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4 Library: dyncallback
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5 File: dyncallback/dyncall_callback_arm64.c
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6 Description: Callback - Implementation for ARM64 / ARMv8 / AAPCS64
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7 License:
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8
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9 Copyright (c) 2015 Daniel Adler <dadler@uni-goettingen.de>,
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10 Tassilo Philipp <tphilipp@potion-studios.com>
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11
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12 Permission to use, copy, modify, and distribute this software for any
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13 purpose with or without fee is hereby granted, provided that the above
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14 copyright notice and this permission notice appear in all copies.
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15
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16 THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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17 WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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18 MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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19 ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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20 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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21 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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22 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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23
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24 */
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25
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26 #include "dyncall_callback.h"
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27 #include "dyncall_alloc_wx.h"
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28 #include "dyncall_thunk.h"
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29
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30 extern void dcCallbackThunkEntry();
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31
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32 struct DCCallback
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33 {
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34 // off size
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35 // ----|-----
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36 DCThunk thunk; // 0 32
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37 DCCallbackHandler* handler; // 32 8
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38 void* userdata; // 40 8
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39 //
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40 // size 48
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41 // aligned 48
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42 };
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43
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44 void dcbInitCallback(DCCallback* pcb, const char* signature, DCCallbackHandler* handler, void* userdata)
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45 {
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46 pcb->handler = handler;
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47 pcb->userdata = userdata;
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48 }
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49
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50 DCCallback* dcbNewCallback(const char* signature, DCCallbackHandler* handler, void* userdata)
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51 {
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52 int err;
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53 DCCallback* pcb;
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54 err = dcAllocWX(sizeof(DCCallback), (void**) &pcb);
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55 if (err != 0) return 0;
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56
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57 dcbInitThunk(&pcb->thunk, dcCallbackThunkEntry);
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58 dcbInitCallback(pcb, signature, handler, userdata);
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59 return pcb;
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60 }
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61
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62 void dcbFreeCallback(DCCallback* pcb)
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63 {
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64 dcFreeWX(pcb, sizeof(DCCallback));
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65 }
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66
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67 void* dcbGetUserData(DCCallback* pcb)
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68 {
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69 return pcb->userdata;
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70 }
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71
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