1 /* This testcase is part of GDB, the GNU debugger. 2 3 Copyright 2009-2019 Free Software Foundation, Inc. 4 5 This program is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 3 of the License, or 8 (at your option) any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 17 18 #include <assert.h> 19 20 int 21 init_stub (int arg) 22 { 23 return 0; 24 } 25 26 /* Make differentiation of how the gnu_ifunc call resolves before and after 27 calling gnu_ifunc_pre. This ensures the resolved function address is not 28 being cached anywhere for the debugging purposes. */ 29 30 volatile int gnu_ifunc_initialized; 31 32 /* This stores the argument received by the ifunc resolver. */ 33 34 volatile unsigned long resolver_hwcap = -1; 35 36 static void 37 gnu_ifunc_pre (void) 38 { 39 assert (!gnu_ifunc_initialized); 40 41 gnu_ifunc_initialized = 1; 42 } 43 44 extern int gnu_ifunc (int arg); 45 46 int 47 main (void) 48 { 49 int i; 50 51 gnu_ifunc_pre (); 52 53 i = gnu_ifunc (1); /* break-at-call */ 54 assert (i == 2); 55 56 gnu_ifunc (2); /* break-at-nextcall */ 57 58 return 0; /* break-at-exit */ 59 } 60