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