1 /* 2 * (C) Copyright 2008-2011 3 * Graeme Russ, <graeme.russ@gmail.com> 4 * 5 * (C) Copyright 2002 6 * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se> 7 * 8 * (C) Copyright 2002 9 * Wolfgang Denk, DENX Software Engineering, <wd@denx.de> 10 * 11 * (C) Copyright 2002 12 * Sysgo Real-Time Solutions, GmbH <www.elinos.com> 13 * Marius Groeger <mgroeger@sysgo.de> 14 * 15 * SPDX-License-Identifier: GPL-2.0+ 16 */ 17 18 #include <common.h> 19 #include <command.h> 20 #include <malloc.h> 21 #include <asm/u-boot-x86.h> 22 23 DECLARE_GLOBAL_DATA_PTR; 24 25 unsigned long do_go_exec(ulong (*entry)(int, char * const []), 26 int argc, char * const argv[]) 27 { 28 unsigned long ret = 0; 29 char **argv_tmp; 30 31 /* 32 * x86 does not use a dedicated register to pass the pointer to 33 * the global_data, so it is instead passed as argv[-1]. By using 34 * argv[-1], the called 'Application' can use the contents of 35 * argv natively. However, to safely use argv[-1] a new copy of 36 * argv is needed with the extra element 37 */ 38 argv_tmp = malloc(sizeof(char *) * (argc + 1)); 39 40 if (argv_tmp) { 41 argv_tmp[0] = (char *)gd; 42 43 memcpy(&argv_tmp[1], argv, (size_t)(sizeof(char *) * argc)); 44 45 ret = (entry) (argc, &argv_tmp[1]); 46 free(argv_tmp); 47 } 48 49 return ret; 50 } 51