Mercurial > pub > dyncall > dyncall
annotate dyncallback/dyncall_callback_arm64.c @ 202:030fbb70aa1b
- changed allocwx code:
* to introduce a call allowing to switch the written page to be executable (e.g. using mprotect)
* changed mmap based code so page is always W^X
| author | Tassilo Philipp |
|---|---|
| date | Mon, 20 Mar 2017 23:12:58 +0100 |
| parents | d48a8b8d2ef9 |
| children | f5577f6bf97a |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 | |
| 3 Package: dyncall | |
| 4 Library: dyncallback | |
| 5 File: dyncallback/dyncall_callback_arm64.c | |
| 6 Description: Callback - Implementation for ARM64 / ARMv8 / AAPCS64 | |
| 7 License: | |
| 8 | |
|
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9 Copyright (c) 2015-2016 Daniel Adler <dadler@uni-goettingen.de>, |
|
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10 Tassilo Philipp <tphilipp@potion-studios.com> |
| 0 | 11 |
| 12 Permission to use, copy, modify, and distribute this software for any | |
| 13 purpose with or without fee is hereby granted, provided that the above | |
| 14 copyright notice and this permission notice appear in all copies. | |
| 15 | |
| 16 THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
| 17 WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
| 18 MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
| 19 ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
| 20 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
| 21 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
| 22 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
| 23 | |
| 24 */ | |
| 25 | |
|
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26 |
| 0 | 27 #include "dyncall_callback.h" |
| 28 #include "dyncall_alloc_wx.h" | |
| 29 #include "dyncall_thunk.h" | |
| 30 | |
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31 /* Callback symbol. */ |
| 0 | 32 extern void dcCallbackThunkEntry(); |
| 33 | |
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34 struct DCCallback /* 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 }; /* total 48 */ |
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d48a8b8d2ef9
- integrated all headers containing DCCallback definition into the translation units used (arm64 already avoided this pointless header, so following that style)
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40 /* aligned 48 */ |
| 0 | 41 |
| 42 void dcbInitCallback(DCCallback* pcb, const char* signature, DCCallbackHandler* handler, void* userdata) | |
| 43 { | |
| 44 pcb->handler = handler; | |
| 45 pcb->userdata = userdata; | |
| 46 } | |
| 47 | |
| 48 DCCallback* dcbNewCallback(const char* signature, DCCallbackHandler* handler, void* userdata) | |
| 49 { | |
| 50 int err; | |
| 51 DCCallback* pcb; | |
| 52 err = dcAllocWX(sizeof(DCCallback), (void**) &pcb); | |
| 202 | 53 if(err) |
| 54 return NULL; | |
| 0 | 55 |
| 56 dcbInitThunk(&pcb->thunk, dcCallbackThunkEntry); | |
| 57 dcbInitCallback(pcb, signature, handler, userdata); | |
| 202 | 58 |
| 59 err = dcInitExecWX(pcb, sizeof(DCCallback)); | |
| 60 if(err) { | |
| 61 dcFreeWX(pcb, sizeof(DCCallback)); | |
| 62 return NULL; | |
| 63 } | |
| 64 | |
| 0 | 65 return pcb; |
| 66 } | |
| 67 | |
| 68 void dcbFreeCallback(DCCallback* pcb) | |
| 69 { | |
| 70 dcFreeWX(pcb, sizeof(DCCallback)); | |
| 71 } | |
| 72 | |
| 73 void* dcbGetUserData(DCCallback* pcb) | |
| 74 { | |
| 75 return pcb->userdata; | |
| 76 } | |
| 77 |