/* * Copyright 2013 Albert ARIBAUD * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ /** * These two symbols are declared in a C file so that the linker * uses R_ARM_RELATIVE relocation, rather than the R_ARM_ABS32 one * it would use if the symbols were defined in the linker file. * Using only R_ARM_RELATIVE relocation ensures that references to * the symbols are correct after as well as before relocation. * * We need a 0-byte-size type for these symbols, and the compiler * does not allow defining objects of C type 'void'. Using an empty * struct is allowed by the compiler, but causes gcc versions 4.4 and * below to complain about aliasing. Therefore we use the next best * thing: zero-sized arrays, which are both 0-byte-size and exempt from * aliasing warnings. */ char __bss_start[0] __attribute__((used, section(".__bss_start"))); char __bss_end[0] __attribute__((used, section(".__bss_end")));