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