/* * arch/score/kernel/module.c * * Score Processor version. * * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. *  Chen Liqin <liqin.chen@sunplusct.com> *  Lennox Wu <lennox.wu@sunplusct.com> * * 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, see the file COPYING, or write * to the Free Software Foundation, Inc., * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA */ #include <linux/moduleloader.h>#include <linux/module.h>#include <linux/vmalloc.h> int apply_relocate(Elf_Shdr *sechdrs, const char *strtab,		unsigned int symindex, unsigned int relindex,		struct module *me){	Elf32_Shdr *symsec = sechdrs + symindex;	Elf32_Shdr *relsec = sechdrs + relindex;	Elf32_Shdr *dstsec = sechdrs + relsec->sh_info;	Elf32_Rel *rel = (void *)relsec->sh_addr;	unsigned int i; 	for (i = 0; i < relsec->sh_size / sizeof(Elf32_Rel); i++, rel++) {		unsigned long loc;		Elf32_Sym *sym;		s32 r_offset; 		r_offset = ELF32_R_SYM(rel->r_info);		if ((r_offset < 0) ||		    (r_offset > (symsec->sh_size / sizeof(Elf32_Sym)))) {			printk(KERN_ERR "%s: bad relocation, section %d reloc %d\n",				me->name, relindex, i);				return -ENOEXEC;		} 		sym = ((Elf32_Sym *)symsec->sh_addr) + r_offset; 		if ((rel->r_offset < 0) ||		    (rel->r_offset > dstsec->sh_size - sizeof(u32))) {			printk(KERN_ERR "%s: out of bounds relocation, "				"section %d reloc %d offset %d size %d\n",				me->name, relindex, i, rel->r_offset,				dstsec->sh_size);			return -ENOEXEC;		} 		loc = dstsec->sh_addr + rel->r_offset;		switch (ELF32_R_TYPE(rel->r_info)) {		case R_SCORE_NONE:			break;		case R_SCORE_ABS32:			*(unsigned long *)loc += sym->st_value;			break;		case R_SCORE_HI16:			break;		case R_SCORE_LO16: {			unsigned long hi16_offset, offset;			unsigned long uvalue;			unsigned long temp, temp_hi;			temp_hi = *((unsigned long *)loc - 1);			temp = *(unsigned long *)loc; 			hi16_offset = (((((temp_hi) >> 16) & 0x3) << 15) |					((temp_hi) & 0x7fff)) >> 1;			offset = ((temp >> 16 & 0x03) << 15) |					((temp & 0x7fff) >> 1);			offset = (hi16_offset << 16) | (offset & 0xffff);			uvalue = sym->st_value + offset;			hi16_offset = (uvalue >> 16) << 1; 			temp_hi = ((temp_hi) & (~(0x37fff))) |					(hi16_offset & 0x7fff) |					((hi16_offset << 1) & 0x30000);			*((unsigned long *)loc - 1) = temp_hi; 			offset = (uvalue & 0xffff) << 1;			temp = (temp & (~(0x37fff))) | (offset & 0x7fff) |				((offset << 1) & 0x30000);			*(unsigned long *)loc = temp;			break;		}		case R_SCORE_24: {			unsigned long hi16_offset, offset;			unsigned long uvalue;			unsigned long temp; 			temp = *(unsigned long *)loc;			offset = (temp & 0x03FF7FFE);			hi16_offset = (offset & 0xFFFF0000);			offset = (hi16_offset | ((offset & 0xFFFF) << 1)) >> 2; 			uvalue = (sym->st_value + offset) >> 1;			uvalue = uvalue & 0x00ffffff; 			temp = (temp & 0xfc008001) |				((uvalue << 2) & 0x3ff0000) |				((uvalue & 0x3fff) << 1);			*(unsigned long *)loc = temp;			break;		}		default:			printk(KERN_ERR "%s: unknown relocation: %u\n",				me->name, ELF32_R_TYPE(rel->r_info));			return -ENOEXEC;		}	} 	return 0;} /* Given an address, look for it in the module exception tables. */const struct exception_table_entry *search_module_dbetables(unsigned long addr){	return NULL;}