testing/test-cases/kernel-pageablekc-fixups.dtest/foo.c

   1
   2 #include "../kernel-test-runner.h"
   3
   4 extern int bar();
   5 __typeof(&bar) barPtr = &bar;
   6
   7 int foo() {
   8         return barPtr() + 4;
   9 }
  10
  11 __attribute__((constructor))
  12 int test(const TestRunnerFunctions* funcs) {
  13     LOG("test(): start");
  14     // kernel, bar, and foo each added 1, 2, 4, so we need to return 7 to know this worked
  15         int v = foo();
  16     if ( v != 7 ) {
  17         FAIL("foo() returned %d vs expected 7", v);
  18     }
  19     LOG("test(): end");
  20     return 0;
  21 }
  22
  23 int fooDirect() {
  24     return bar() + 4;
  25 }
  26
  27 // Test direct pointer fixups, ie, not via a GOT
  28 __attribute__((constructor))
  29 int testDirect(const TestRunnerFunctions* funcs) {
  30     LOG("testDirect(): start");
  31     // kernel, bar, and foo each added 1, 2, 4, so we need to return 7 to know this worked
  32     int v = fooDirect();
  33     if ( v != 7 ) {
  34         FAIL("fooDirect() returned %d vs expected 7", v);
  35     }
  36     LOG("testDirect(): end");
  37     return 0;
  38 }