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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2008-2011
* Graeme Russ, <graeme.russ@gmail.com>
*
* (C) Copyright 2002
* Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
*
* (C) Copyright 2002
* Wolfgang Denk, DENX Software Engineering, <wd@denx.de>
*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Marius Groeger <mgroeger@sysgo.de>
*/
#include <common.h>
#include <command.h>
#include <malloc.h>
#include <asm/global_data.h>
#include <asm/u-boot-x86.h>
DECLARE_GLOBAL_DATA_PTR;
unsigned long do_go_exec(ulong (*entry)(int, char * const []),
int argc, char *const argv[])
{
unsigned long ret = 0;
char **argv_tmp;
/*
* x86 does not use a dedicated register to pass the pointer to
* the global_data, so it is instead passed as argv[-1]. By using
* argv[-1], the called 'Application' can use the contents of
* argv natively. However, to safely use argv[-1] a new copy of
* argv is needed with the extra element
*/
argv_tmp = malloc(sizeof(char *) * (argc + 1));
if (argv_tmp) {
argv_tmp[0] = (char *)gd;
memcpy(&argv_tmp[1], argv, (size_t)(sizeof(char *) * argc));
ret = (entry) (argc, &argv_tmp[1]);
free(argv_tmp);
}
return ret;
}
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