Mercurial > pub > dyncall > dyncall
annotate test/sign/sign.c @ 464:bd65767c0534
doc: two more disas examples
author | Tassilo Philipp |
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date | Wed, 02 Feb 2022 11:03:06 +0100 |
parents | 7608e34098b0 |
children | e2899b4ff713 |
rev | line source |
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0 | 1 /* |
2 | |
3 Package: dyncall | |
4 Library: test | |
5 File: test/sign/sign.c | |
6 Description: | |
7 License: | |
8 | |
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7608e34098b0
- cleanups, simplifications, some api clarification, ...
Tassilo Philipp
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9 Copyright (c) 2011-2021 Daniel Adler <dadler@uni-goettingen.de>, |
0 | 10 Tassilo Philipp <tphilipp@potion-studios.com> |
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 | |
26 | |
27 #include "dyncall.h" | |
28 | |
29 // This program demonstrates the need for 'unsigned' integers and the | |
30 // ability to implement zero/sign extensions for small integers. | |
31 // This test program indicates failure on powerpc 32-bit with | |
32 // compiler optimizations enabled (e.g. '-O2' compilation flags). | |
33 // | |
34 // A fix to be incorporated in the API is also given. | |
35 // | |
36 | |
37 int add1s(unsigned short x) { return x + 1; } | |
38 | |
39 // API BUGFIX: | |
40 #define dcArgUShort(vm,x) dcArgInt(vm,(int)(unsigned int)(x)) | |
41 | |
42 // OLD TEST: int add1(unsigned char x) { return x + 1; } | |
43 | |
44 int main(int argc, char* argv[]) | |
45 { | |
46 DCCallVM* vm; | |
47 int result; | |
48 int total; | |
49 vm = dcNewCallVM(4096); | |
50 dcReset(vm); | |
51 | |
52 dcArgShort(vm, 0xFFFF ); | |
53 result = dcCallInt( vm, &add1s ); | |
54 total = (result == 0x10000); | |
55 printf("result: sign: %d\n", total); | |
56 | |
57 if (!total) { | |
58 // | |
59 // TEST BUGFIX: use instead.. | |
60 // | |
61 dcReset(vm); | |
62 dcArgUShort( vm, 0xFFFF ); | |
63 result = dcCallInt( vm, &add1s ); | |
64 total = (result == 0x10000); | |
65 printf("result: sign (bugfix): %d\n", total); | |
66 } | |
67 | |
68 // result = dcCallInt( vm, &add1s ); | |
69 // total = (result == 0x10000); | |
70 | |
71 // OLD TEST: updated to using 'short' | |
72 // dcArgChar( vm, (char) 255 ); | |
73 // result = dcCallInt( vm, &add1 ); | |
74 // total = (result == 256); | |
75 | |
76 // printf("result: sign: %d\n", total); | |
77 return 0; | |
78 } |