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[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [gold/] [testsuite/] [ifuncmain3.c] - Rev 144
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/* Test STT_GNU_IFUNC symbols with dlopen: 1. Direct function call. 2. Function pointer. 3. Visibility with override. */ #include <dlfcn.h> #include <stdlib.h> #include <stdio.h> extern int __attribute__ ((noinline)) foo (void); extern int __attribute__ ((noinline)) foo_hidden (void); extern int __attribute__ ((noinline)) foo_protected (void); typedef int (*foo_p) (void); int __attribute__ ((noinline)) foo (void) { return -30; } int __attribute__ ((noinline)) foo_hidden (void) { return -20; } int __attribute__ ((noinline)) foo_protected (void) { return -40; } int main (void) { foo_p p; foo_p (*f) (void); int *ret; void *h = dlopen ("ifuncmod3.so", RTLD_LAZY); if (h == NULL) { printf ("cannot load: %s\n", dlerror ()); return 1; } p = dlsym (h, "foo"); if (p == NULL) { printf ("symbol not found: %s\n", dlerror ()); return 1; } if ((*p) () != -1) abort (); f = dlsym (h, "get_foo_p"); if (f == NULL) { printf ("symbol not found: %s\n", dlerror ()); return 1; } ret = dlsym (h, "ret_foo"); if (ret == NULL) { printf ("symbol not found: %s\n", dlerror ()); return 1; } p = (*f) (); if (p != foo) abort (); if (foo () != -30) abort (); if (*ret != -30 || (*p) () != *ret) abort (); f = dlsym (h, "get_foo_hidden_p"); if (f == NULL) { printf ("symbol not found: %s\n", dlerror ()); return 1; } ret = dlsym (h, "ret_foo_hidden"); if (ret == NULL) { printf ("symbol not found: %s\n", dlerror ()); return 1; } p = (*f) (); if (foo_hidden () != -20) abort (); if (*ret != 1 || (*p) () != *ret) abort (); f = dlsym (h, "get_foo_protected_p"); if (f == NULL) { printf ("symbol not found: %s\n", dlerror ()); return 1; } ret = dlsym (h, "ret_foo_protected"); if (ret == NULL) { printf ("symbol not found: %s\n", dlerror ()); return 1; } p = (*f) (); if (p == foo_protected) abort (); if (foo_protected () != -40) abort (); if (*ret != 0 || (*p) () != *ret) abort (); if (dlclose (h) != 0) { printf ("cannot close: %s\n", dlerror ()); return 1; } return 0; }
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