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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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281
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9 Copyright (c) 2011-2018 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.h"
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28 #include "../common/platformInit.h"
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29
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30 // This program demonstrates the need for 'unsigned' integers and the
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31 // ability to implement zero/sign extensions for small integers.
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32 // This test program indicates failure on powerpc 32-bit with
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33 // compiler optimizations enabled (e.g. '-O2' compilation flags).
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34 //
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35 // A fix to be incorporated in the API is also given.
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36 //
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37
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38 int add1s(unsigned short x) { return x + 1; }
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39
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40 // API BUGFIX:
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41 #define dcArgUShort(vm,x) dcArgInt(vm,(int)(unsigned int)(x))
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42
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43 // OLD TEST: int add1(unsigned char x) { return x + 1; }
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44
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45 int main(int argc, char* argv[])
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46 {
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47 DCCallVM* vm;
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48 int result;
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49 int total;
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50 vm = dcNewCallVM(4096);
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51 dcReset(vm);
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52
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53 dcArgShort(vm, 0xFFFF );
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54 result = dcCallInt( vm, &add1s );
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55 total = (result == 0x10000);
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56 printf("result: sign: %d\n", total);
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57
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58 if (!total) {
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59 //
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60 // TEST BUGFIX: use instead..
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61 //
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62 dcReset(vm);
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63 dcArgUShort( vm, 0xFFFF );
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64 result = dcCallInt( vm, &add1s );
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65 total = (result == 0x10000);
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66 printf("result: sign (bugfix): %d\n", total);
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67 }
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68
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69 // result = dcCallInt( vm, &add1s );
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70 // total = (result == 0x10000);
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71
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72 // OLD TEST: updated to using 'short'
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73 // dcArgChar( vm, (char) 255 );
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74 // result = dcCallInt( vm, &add1 );
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75 // total = (result == 256);
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76
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77 // printf("result: sign: %d\n", total);
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78 return 0;
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79 }
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