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Albert ARIBAUD3ebd1cb2013-02-25 00:58:59 +00001/*
2 * Copyright 2013 Albert ARIBAUD <albert.u.boot@aribaud.net>
3 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02004 * SPDX-License-Identifier: GPL-2.0+
Albert ARIBAUD3ebd1cb2013-02-25 00:58:59 +00005 */
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
Albert ARIBAUDdf845022013-06-11 14:17:32 +020022char __bss_start[0] __attribute__((section(".__bss_start")));
23char __bss_end[0] __attribute__((section(".__bss_end")));
Albert ARIBAUDd026dec2013-06-11 14:17:33 +020024char __image_copy_start[0] __attribute__((section(".__image_copy_start")));
25char __image_copy_end[0] __attribute__((section(".__image_copy_end")));
Albert ARIBAUD47bd65e2013-06-11 14:17:34 +020026char __rel_dyn_start[0] __attribute__((section(".__rel_dyn_start")));
27char __rel_dyn_end[0] __attribute__((section(".__rel_dyn_end")));
Marc Zyngierbf433af2014-07-12 14:24:02 +010028char __secure_start[0] __attribute__((section(".__secure_start")));
29char __secure_end[0] __attribute__((section(".__secure_end")));
Albert ARIBAUDd0b5d9d2014-02-22 17:53:42 +010030char _end[0] __attribute__((section(".__end")));