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annotate test/testloadso.c @ 2072:4b3f98a9a2c1

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xbios: preliminary video mode init
author Patrice Mandin <patmandin@gmail.com>
date Mon, 13 Nov 2006 19:59:28 +0000
parents f16a7d02a176
children 2c835d58faad
rev   line source
2067
dcdb175c2829 Merged r2899:2900 from SDL-1.2 branch to trunk: testloadso program.
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1
dcdb175c2829 Merged r2899:2900 from SDL-1.2 branch to trunk: testloadso program.
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2 /* Test program to test dynamic loading with the loadso subsystem.
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3 */
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4
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5 #include <stdio.h>
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6 #include <stdlib.h>
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7
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8 #include "SDL.h"
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9
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10 typedef int (*fntype)(const char *);
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12 int main(int argc, char *argv[])
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13 {
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14 int retval = 0;
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15 int hello = 0;
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16 const char *libname = NULL;
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17 const char *symname = NULL;
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18 void *lib = NULL;
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19 fntype fn = NULL;
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21 if (argc != 3) {
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22 const char *app = argv[0];
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23 fprintf(stderr, "USAGE: %s <library> <functionname>\n", app);
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24 fprintf(stderr, " %s --hello <lib with puts()>\n", app);
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25 return 1;
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26 }
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28 /* Initialize SDL */
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29 if ( SDL_Init(0) < 0 ) {
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30 fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError());
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31 return 2;
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32 }
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33
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34 if (strcmp(argv[1], "--hello") == 0) {
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35 hello = 1;
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36 libname = argv[2];
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37 symname = "puts";
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38 } else {
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39 libname = argv[1];
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40 symname = argv[2];
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41 }
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43 lib = SDL_LoadObject(libname);
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44 if (lib == NULL) {
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45 fprintf(stderr, "SDL_LoadObject('%s') failed: %s\n",
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46 libname, SDL_GetError());
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47 retval = 3;
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48 } else {
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49 fn = (fntype) SDL_LoadFunction(lib, symname);
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50 if (fn == NULL) {
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51 fprintf(stderr, "SDL_LoadFunction('%s') failed: %s\n",
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52 symname, SDL_GetError());
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53 retval = 4;
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54 } else {
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55 printf("Found %s in %s at %p\n", symname, libname, fn);
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56 if (hello) {
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57 printf("Calling function...\n");
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58 fflush(stdout);
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59 fn(" HELLO, WORLD!\n");
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60 printf("...apparently, we survived. :)\n");
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61 printf("Unloading library...\n");
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62 fflush(stdout);
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63 }
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64 }
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65 SDL_UnloadObject(lib);
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66 }
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67 SDL_Quit();
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68 return(0);
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69 }
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71