18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 28c2ecf20Sopenharmony_ci/* 38c2ecf20Sopenharmony_ci * When building position independent code with GCC using the -fPIC option, 48c2ecf20Sopenharmony_ci * (or even the -fPIE one on older versions), it will assume that we are 58c2ecf20Sopenharmony_ci * building a dynamic object (either a shared library or an executable) that 68c2ecf20Sopenharmony_ci * may have symbol references that can only be resolved at load time. For a 78c2ecf20Sopenharmony_ci * variety of reasons (ELF symbol preemption, the CoW footprint of the section 88c2ecf20Sopenharmony_ci * that is modified by the loader), this results in all references to symbols 98c2ecf20Sopenharmony_ci * with external linkage to go via entries in the Global Offset Table (GOT), 108c2ecf20Sopenharmony_ci * which carries absolute addresses which need to be fixed up when the 118c2ecf20Sopenharmony_ci * executable image is loaded at an offset which is different from its link 128c2ecf20Sopenharmony_ci * time offset. 138c2ecf20Sopenharmony_ci * 148c2ecf20Sopenharmony_ci * Fortunately, there is a way to inform the compiler that such symbol 158c2ecf20Sopenharmony_ci * references will be satisfied at link time rather than at load time, by 168c2ecf20Sopenharmony_ci * giving them 'hidden' visibility. 178c2ecf20Sopenharmony_ci */ 188c2ecf20Sopenharmony_ci 198c2ecf20Sopenharmony_ci#pragma GCC visibility push(hidden) 20