1/* SPDX-License-Identifier: GPL-2.0 */ 2/* 3 * When building position independent code with GCC using the -fPIC option, 4 * (or even the -fPIE one on older versions), it will assume that we are 5 * building a dynamic object (either a shared library or an executable) that 6 * may have symbol references that can only be resolved at load time. For a 7 * variety of reasons (ELF symbol preemption, the CoW footprint of the section 8 * that is modified by the loader), this results in all references to symbols 9 * with external linkage to go via entries in the Global Offset Table (GOT), 10 * which carries absolute addresses which need to be fixed up when the 11 * executable image is loaded at an offset which is different from its link 12 * time offset. 13 * 14 * Fortunately, there is a way to inform the compiler that such symbol 15 * references will be satisfied at link time rather than at load time, by 16 * giving them 'hidden' visibility. 17 */ 18 19#pragma GCC visibility push(hidden) 20