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109 lines
2.2 KiB
109 lines
2.2 KiB
4 years ago
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#include <stdio.h>
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#include "module.h"
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#if SPECIAL_MAGIC_DEFINE != 42
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#error "SPECIAL_MAGIC_DEFINE is not defined"
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#endif
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int func_from_language_runtime(void);
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typedef int (*fptr) (void);
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#ifdef _WIN32
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#include <windows.h>
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static wchar_t*
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win32_get_last_error (void)
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{
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wchar_t *msg = NULL;
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FormatMessageW (FORMAT_MESSAGE_ALLOCATE_BUFFER
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| FORMAT_MESSAGE_IGNORE_INSERTS
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| FORMAT_MESSAGE_FROM_SYSTEM,
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NULL, GetLastError (), 0,
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(LPWSTR) &msg, 0, NULL);
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return msg;
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}
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int main(int argc, char **argv)
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{
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HINSTANCE handle;
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fptr importedfunc;
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int expected, actual;
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int ret = 1;
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if(argc==0) {};
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handle = LoadLibraryA (argv[1]);
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if (!handle) {
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wchar_t *msg = win32_get_last_error ();
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printf ("Could not open %s: %S\n", argv[1], msg);
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goto nohandle;
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}
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importedfunc = (fptr) GetProcAddress (handle, "func");
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if (importedfunc == NULL) {
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wchar_t *msg = win32_get_last_error ();
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printf ("Could not find 'func': %S\n", msg);
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goto out;
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}
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actual = importedfunc ();
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expected = func_from_language_runtime ();
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if (actual != expected) {
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printf ("Got %i instead of %i\n", actual, expected);
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goto out;
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}
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ret = 0;
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out:
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FreeLibrary (handle);
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nohandle:
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return ret;
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}
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#else
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#include<dlfcn.h>
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#include<assert.h>
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int main(int argc, char **argv) {
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void *dl;
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fptr importedfunc;
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int expected, actual;
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char *error;
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int ret = 1;
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if(argc==0) {};
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dlerror();
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dl = dlopen(argv[1], RTLD_LAZY);
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error = dlerror();
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if(error) {
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printf("Could not open %s: %s\n", argv[1], error);
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goto nodl;
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}
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importedfunc = (fptr) dlsym(dl, "func");
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if (importedfunc == NULL) {
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printf ("Could not find 'func'\n");
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goto out;
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}
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assert(importedfunc != func_from_language_runtime);
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actual = (*importedfunc)();
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expected = func_from_language_runtime ();
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if (actual != expected) {
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printf ("Got %i instead of %i\n", actual, expected);
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goto out;
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}
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ret = 0;
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out:
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dlclose(dl);
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nodl:
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return ret;
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}
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#endif
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