1df84502eSAlbert ARIBAUD /* 2df84502eSAlbert ARIBAUD * Copyright 2013 Albert ARIBAUD <albert.u.boot@aribaud.net> 3df84502eSAlbert ARIBAUD * 41a459660SWolfgang Denk * SPDX-License-Identifier: GPL-2.0+ 5df84502eSAlbert ARIBAUD */ 6df84502eSAlbert ARIBAUD 7df84502eSAlbert ARIBAUD /** 8df84502eSAlbert ARIBAUD * These two symbols are declared in a C file so that the linker 9df84502eSAlbert ARIBAUD * uses R_ARM_RELATIVE relocation, rather than the R_ARM_ABS32 one 10df84502eSAlbert ARIBAUD * it would use if the symbols were defined in the linker file. 11df84502eSAlbert ARIBAUD * Using only R_ARM_RELATIVE relocation ensures that references to 12df84502eSAlbert ARIBAUD * the symbols are correct after as well as before relocation. 13df84502eSAlbert ARIBAUD * 14df84502eSAlbert ARIBAUD * We need a 0-byte-size type for these symbols, and the compiler 15df84502eSAlbert ARIBAUD * does not allow defining objects of C type 'void'. Using an empty 16df84502eSAlbert ARIBAUD * struct is allowed by the compiler, but causes gcc versions 4.4 and 17df84502eSAlbert ARIBAUD * below to complain about aliasing. Therefore we use the next best 18df84502eSAlbert ARIBAUD * thing: zero-sized arrays, which are both 0-byte-size and exempt from 19df84502eSAlbert ARIBAUD * aliasing warnings. 20df84502eSAlbert ARIBAUD */ 21df84502eSAlbert ARIBAUD 22df84502eSAlbert ARIBAUD char __bss_start[0] __attribute__((section(".__bss_start"))); 23df84502eSAlbert ARIBAUD char __bss_end[0] __attribute__((section(".__bss_end"))); 24d026dec8SAlbert ARIBAUD char __image_copy_start[0] __attribute__((section(".__image_copy_start"))); 25d026dec8SAlbert ARIBAUD char __image_copy_end[0] __attribute__((section(".__image_copy_end"))); 2647bd65efSAlbert ARIBAUD char __rel_dyn_start[0] __attribute__((section(".__rel_dyn_start"))); 2747bd65efSAlbert ARIBAUD char __rel_dyn_end[0] __attribute__((section(".__rel_dyn_end"))); 28bf433afdSMarc Zyngier char __secure_start[0] __attribute__((section(".__secure_start"))); 29bf433afdSMarc Zyngier char __secure_end[0] __attribute__((section(".__secure_end"))); 30*980d6a55SChen-Yu Tsai char __secure_stack_start[0] __attribute__((section(".__secure_stack_start"))); 31*980d6a55SChen-Yu Tsai char __secure_stack_end[0] __attribute__((section(".__secure_stack_end"))); 3250149ea3SAlexander Graf char __efi_runtime_start[0] __attribute__((section(".__efi_runtime_start"))); 3350149ea3SAlexander Graf char __efi_runtime_stop[0] __attribute__((section(".__efi_runtime_stop"))); 3450149ea3SAlexander Graf char __efi_runtime_rel_start[0] __attribute__((section(".__efi_runtime_rel_start"))); 3550149ea3SAlexander Graf char __efi_runtime_rel_stop[0] __attribute__((section(".__efi_runtime_rel_stop"))); 36d0b5d9daSAlbert ARIBAUD char _end[0] __attribute__((section(".__end"))); 37