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- another tweak handling clang trying to be too smart (see last commit)
author Tassilo Philipp
date Sun, 24 Mar 2024 13:52:44 +0100
parents e2899b4ff713
children
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1 /*
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2
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3 Package: dyncall
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4 Library: test
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5 File: test/sign/sign.c
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6 Description:
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7 License:
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8
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9 Copyright (c) 2011-2021 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.h"
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28
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29 /* This program demonstrates the need for 'unsigned' integers and the */
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30 /* ability to implement zero/sign extensions for small integers. */
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31 /* This test program indicates failure on powerpc 32-bit with */
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32 /* compiler optimizations enabled (e.g. '-O2' compilation flags). */
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33 /* */
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34 /* A fix to be incorporated in the API is also given. */
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35
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36 int add1s(unsigned short x) { return x + 1; }
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37
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38 /* API BUGFIX: */
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39 #define dcArgUShort(vm,x) dcArgInt(vm,(int)(unsigned int)(x))
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40
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41 /* OLD TEST: int add1(unsigned char x) { return x + 1; } */
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42
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43 int main(int argc, char* argv[])
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44 {
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45 DCCallVM* vm;
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46 int result;
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47 int total;
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48 vm = dcNewCallVM(4096);
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49 dcReset(vm);
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50
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51 dcArgShort(vm, 0xFFFF );
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52 result = dcCallInt( vm, &add1s );
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53 total = (result == 0x10000);
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54 printf("result: sign: %d\n", total);
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55
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56 if (!total) {
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57
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58 /* TEST BUGFIX: use instead.. */
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59 dcReset(vm);
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60 dcArgUShort( vm, 0xFFFF );
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61 result = dcCallInt( vm, &add1s );
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62 total = (result == 0x10000);
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63 printf("result: sign (bugfix): %d\n", total);
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64 }
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66 /*result = dcCallInt( vm, &add1s );
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67 total = (result == 0x10000);*/
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69 /*OLD TEST: updated to using 'short'
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70 dcArgChar( vm, (char) 255 );
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71 result = dcCallInt( vm, &add1 );
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72 total = (result == 256);*/
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74 /*printf("result: sign: %d\n", total); */
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75 return 0;
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76 }
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