1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright 2013 Albert ARIBAUD <albert.u.boot@aribaud.net>
4 */
5#include <linux/compiler.h>
6
7/**
8 * These two symbols are declared in a C file so that the linker
9 * uses R_ARM_RELATIVE relocation, rather than the R_ARM_ABS32 one
10 * it would use if the symbols were defined in the linker file.
11 * Using only R_ARM_RELATIVE relocation ensures that references to
12 * the symbols are correct after as well as before relocation.
13 *
14 * We need a 0-byte-size type for these symbols, and the compiler
15 * does not allow defining objects of C type 'void'. Using an empty
16 * struct is allowed by the compiler, but causes gcc versions 4.4 and
17 * below to complain about aliasing. Therefore we use the next best
18 * thing: zero-sized arrays, which are both 0-byte-size and exempt from
19 * aliasing warnings.
20 */
21
22char __secure_start[0] __section(".__secure_start");
23char __secure_end[0] __section(".__secure_end");
24char __secure_stack_start[0] __section(".__secure_stack_start");
25char __secure_stack_end[0] __section(".__secure_stack_end");
26char _end[0] __section(".__end");
27