diff options
Diffstat (limited to 'arch/mn10300/kernel/module.c')
| -rw-r--r-- | arch/mn10300/kernel/module.c | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/arch/mn10300/kernel/module.c b/arch/mn10300/kernel/module.c deleted file mode 100644 index 216ad23c9570..000000000000 --- a/arch/mn10300/kernel/module.c +++ /dev/null @@ -1,156 +0,0 @@ -/* MN10300 Kernel module helper routines - * - * Copyright (C) 2007, 2008, 2009 Red Hat, Inc. All Rights Reserved. - * Written by Mark Salter (msalter@redhat.com) - * - Derived from arch/i386/kernel/module.c - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public Licence as published by - * the Free Software Foundation; either version 2 of the Licence, 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 Licence for more details. - * - * You should have received a copy of the GNU General Public Licence - * 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/bug.h> - -#if 0 -#define DEBUGP printk -#else -#define DEBUGP(fmt, ...) -#endif - -static void reloc_put16(uint8_t *p, uint32_t val) -{ - p[0] = val & 0xff; - p[1] = (val >> 8) & 0xff; -} - -static void reloc_put24(uint8_t *p, uint32_t val) -{ - reloc_put16(p, val); - p[2] = (val >> 16) & 0xff; -} - -static void reloc_put32(uint8_t *p, uint32_t val) -{ - reloc_put16(p, val); - reloc_put16(p+2, val >> 16); -} - -/* - * apply a RELA relocation - */ -int apply_relocate_add(Elf32_Shdr *sechdrs, - const char *strtab, - unsigned int symindex, - unsigned int relsec, - struct module *me) -{ - unsigned int i, sym_diff_seen = 0; - Elf32_Rela *rel = (void *)sechdrs[relsec].sh_addr; - Elf32_Sym *sym; - Elf32_Addr relocation, sym_diff_val = 0; - uint8_t *location; - uint32_t value; - - DEBUGP("Applying relocate section %u to %u\n", - relsec, sechdrs[relsec].sh_info); - - for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) { - /* this is where to make the change */ - location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr - + rel[i].r_offset; - - /* this is the symbol the relocation is referring to (note that - * all undefined symbols have been resolved by the caller) */ - sym = (Elf32_Sym *)sechdrs[symindex].sh_addr - + ELF32_R_SYM(rel[i].r_info); - - /* this is the adjustment to be made */ - relocation = sym->st_value + rel[i].r_addend; - - if (sym_diff_seen) { - switch (ELF32_R_TYPE(rel[i].r_info)) { - case R_MN10300_32: - case R_MN10300_24: - case R_MN10300_16: - case R_MN10300_8: - relocation -= sym_diff_val; - sym_diff_seen = 0; - break; - default: - printk(KERN_ERR "module %s: Unexpected SYM_DIFF relocation: %u\n", - me->name, ELF32_R_TYPE(rel[i].r_info)); - return -ENOEXEC; - } - } - - switch (ELF32_R_TYPE(rel[i].r_info)) { - /* for the first four relocation types, we simply - * store the adjustment at the location given */ - case R_MN10300_32: - reloc_put32(location, relocation); - break; - case R_MN10300_24: - reloc_put24(location, relocation); - break; - case R_MN10300_16: - reloc_put16(location, relocation); - break; - case R_MN10300_8: - *location = relocation; - break; - - /* for the next three relocation types, we write the - * adjustment with the address subtracted over the - * value at the location given */ - case R_MN10300_PCREL32: - value = relocation - (uint32_t) location; - reloc_put32(location, value); - break; - case R_MN10300_PCREL16: - value = relocation - (uint32_t) location; - reloc_put16(location, value); - break; - case R_MN10300_PCREL8: - *location = relocation - (uint32_t) location; - break; - - case R_MN10300_SYM_DIFF: - /* This is used to adjust the next reloc as required - * by relaxation. */ - sym_diff_seen = 1; - sym_diff_val = sym->st_value; - break; - - case R_MN10300_ALIGN: - /* Just ignore the ALIGN relocs. - * Only interesting if kernel performed relaxation. */ - continue; - - default: - printk(KERN_ERR "module %s: Unknown relocation: %u\n", - me->name, ELF32_R_TYPE(rel[i].r_info)); - return -ENOEXEC; - } - } - if (sym_diff_seen) { - printk(KERN_ERR "module %s: Nothing follows SYM_DIFF relocation: %u\n", - me->name, ELF32_R_TYPE(rel[i].r_info)); - return -ENOEXEC; - } - return 0; -} |