/*  Kernel module help for i386.    Copyright (C) 2001 Rusty Russell.     This program is free software; you can redistribute it and/or modify    it under the terms of the GNU General Public License as published by    the Free Software Foundation; either version 2 of the License, or    (at your option) any later version.     This program is distributed in the hope that it will be useful,    but WITHOUT ANY WARRANTY; without even the implied warranty of    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the    GNU General Public License for more details.     You should have received a copy of the GNU General Public License    along with this program; if not, write to the Free Software    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA*/#include <linux/moduleloader.h>#include <linux/elf.h>#include <linux/vmalloc.h>#include <linux/fs.h>#include <linux/string.h>#include <linux/kernel.h>#include <linux/slab.h> #if 0#define DEBUGP printk#else#define DEBUGP(fmt , ...)#endif #ifdef CONFIG_ETRAX_KMALLOCED_MODULESvoid *module_alloc(unsigned long size){	return kmalloc(size, GFP_KERNEL);} /* Free memory returned from module_alloc */void module_free(struct module *mod, void *module_region){	kfree(module_region);}#endif int apply_relocate_add(Elf32_Shdr *sechdrs,		       const char *strtab,		       unsigned int symindex,		       unsigned int relsec,		       struct module *me){  	unsigned int i;	Elf32_Rela *rela = (void *)sechdrs[relsec].sh_addr; 	DEBUGP ("Applying add relocate section %u to %u\n", relsec,		sechdrs[relsec].sh_info); 	for (i = 0; i < sechdrs[relsec].sh_size / sizeof (*rela); i++) {		/* This is where to make the change */		uint32_t *loc			= ((void *)sechdrs[sechdrs[relsec].sh_info].sh_addr			   + rela[i].r_offset);		/* This is the symbol it is referring to.  Note that all		   undefined symbols have been resolved.  */		Elf32_Sym *sym			= ((Elf32_Sym *)sechdrs[symindex].sh_addr			   + ELF32_R_SYM (rela[i].r_info));		switch (ELF32_R_TYPE(rela[i].r_info)) {		case R_CRIS_32:			*loc = sym->st_value + rela[i].r_addend;			break;		case R_CRIS_32_PCREL:			*loc = sym->st_value - (unsigned)loc + rela[i].r_addend - 4;			 break;		default:			printk(KERN_ERR "module %s: Unknown relocation: %u\n",			       me->name, ELF32_R_TYPE(rela[i].r_info));			return -ENOEXEC;		}	} 	return 0;}