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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* (C) Copyright 2011
* Graeme Russ, <graeme.russ@gmail.com>
*/
#ifndef _RELOCATE_H_
#define _RELOCATE_H_
#ifndef USE_HOSTCC
#include <asm/global_data.h>
DECLARE_GLOBAL_DATA_PTR;
#endif
/**
* copy_uboot_to_ram() - Copy U-Boot to its new relocated position
*
* Return: 0 if OK, -ve on error
*/
int copy_uboot_to_ram(void);
/**
* clear_bss() - Clear the BSS (Blocked Start by Symbol) segment
*
* This clears the memory used by global variables
*
* Return: 0 if OK, -ve on error
*/
int clear_bss(void);
/**
* do_elf_reloc_fixups() - Fix up ELF relocations in the relocated code
*
* This processes the relocation tables to ensure that the code can run in its
* new location.
*
* Return: 0 if OK, -ve on error
*/
int do_elf_reloc_fixups(void);
/**
* manual_reloc() - Manually relocate a pointer if needed
*
* This is a nop in almost all cases, except for the systems with a broken gcc
* which need to manually relocate some things.
*
* @ptr: Pointer to relocate
* Return: new pointer value
*/
static inline void *manual_reloc(void *ptr)
{
#ifndef USE_HOSTCC
if (IS_ENABLED(CONFIG_NEEDS_MANUAL_RELOC))
return ptr + gd->reloc_off;
#endif
return ptr;
}
#if !defined(USE_HOSTCC) && defined(CONFIG_NEEDS_MANUAL_RELOC)
#define MANUAL_RELOC(ptr) (ptr) = manual_reloc(ptr)
#else
#define MANUAL_RELOC(ptr) (void)(ptr)
#endif
#endif /* _RELOCATE_H_ */
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