annotate dyncallback/dyncall_callback_ppc32.c @ 384:2144287113df r1.2-RC1

- prep for 1.2 release candidate
author Tassilo Philipp
date Wed, 20 Jan 2021 17:50:14 +0100
parents f5577f6bf97a
children 71c884e610f0
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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_ppc32.c
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6 Description: Callback - Implementation Header for ppc32
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7 License:
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8
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9 Copyright (c) 2007-2018 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
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27 #include "dyncall_callback.h"
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28 #include "dyncall_alloc_wx.h"
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29 #include "dyncall_thunk.h"
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30
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31 /* Callback symbol. */
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32 extern void dcCallbackThunkEntry();
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33
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34 struct DCCallback
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35 {
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36 DCThunk thunk; /* offset 0 size 24 */
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37 DCCallbackHandler* handler; /* offset 24 size 4 */
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38 size_t stack_cleanup; /* offset 28 size 4 */
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39 void* userdata; /* offset 32 size 4 */
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40 }; /* total size 36 */
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43 void dcbInitCallback(DCCallback* pcb, const char* signature, DCCallbackHandler* handler, void* userdata)
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44 {
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45 const char* ptr;
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46 char ch;
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47
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48 pcb->handler = handler;
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49 pcb->userdata = userdata;
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50 }
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51
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52 DCCallback* dcbNewCallback(const char* signature, DCCallbackHandler* handler, void* userdata)
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53 {
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54 DCCallback* pcb;
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55 int err = dcAllocWX(sizeof(DCCallback), (void**) &pcb);
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56 if(err)
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57 return NULL;
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58
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59 dcbInitThunk(&pcb->thunk, dcCallbackThunkEntry);
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60 dcbInitCallback(pcb, signature, handler, userdata);
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61
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62 err = dcInitExecWX(pcb, sizeof(DCCallback));
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63 if(err) {
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64 dcFreeWX(pcb, sizeof(DCCallback));
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65 return NULL;
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66 }
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67
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68 return pcb;
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69 }
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71 void dcbFreeCallback(DCCallback* pcb)
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72 {
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73 dcFreeWX(pcb, sizeof(DCCallback));
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74 }
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75
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76 void* dcbGetUserData(DCCallback* pcb)
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77 {
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78 return pcb->userdata;
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79 }