annotate test/syscall/syscall.c @ 410:7608e34098b0

- cleanups, simplifications, some api clarification, ... - test cases consistency: * return status code depending on test results (for actual conformance tests, not stuff that is not an example or hack to check something, ..) * platform init helper added for some
author Tassilo Philipp
date Tue, 05 Oct 2021 21:53:04 +0200
parents f5577f6bf97a
children dfc2e6ee8782
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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/syscall/syscall.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>,
0
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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.h"
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27 #include <sys/syscall.h>
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28 DCCallVM* callvm;
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29
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31 int syscall_write(int fd, char* buf, size_t len)
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32 {
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33 dcReset(callvm);
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34 dcArgInt(callvm, fd);
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35 dcArgPointer(callvm, buf);
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36 dcArgInt(callvm, len);
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37 return dcCallInt(callvm, (DCpointer)(ptrdiff_t)SYS_write);
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38 }
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39
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40 int main(int argc, char* argv[])
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41 {
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42 int r = -1;
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43 callvm = dcNewCallVM(4096);
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44 dcMode(callvm, DC_CALL_SYS_DEFAULT);
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45
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46 if(dcGetError(callvm) == DC_ERROR_NONE)
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47 {
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48 r = syscall_write(1/*stdout*/, "result: syscall: ", 17);
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49 r += syscall_write(1/*stdout*/, r==17?"1":"0", 2);
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50 }
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51 return !(r == 19);
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52 }
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53