66574cc054
This patch removes all the module loader hook implementations in the architecture specific code where the functionality is the same as that now provided by the recently added default hooks. Signed-off-by: Jonas Bonn <jonas@southpole.se> Acked-by: Mike Frysinger <vapier@gentoo.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Tested-by: Michal Simek <monstr@monstr.eu> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
143 lines
4 KiB
C
143 lines
4 KiB
C
/*
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* arch/score/kernel/module.c
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*
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* Score Processor version.
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*
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* Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
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* Chen Liqin <liqin.chen@sunplusct.com>
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* Lennox Wu <lennox.wu@sunplusct.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see the file COPYING, or write
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* to the Free Software Foundation, Inc.,
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* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <linux/moduleloader.h>
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#include <linux/module.h>
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#include <linux/vmalloc.h>
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int apply_relocate(Elf_Shdr *sechdrs, const char *strtab,
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unsigned int symindex, unsigned int relindex,
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struct module *me)
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{
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Elf32_Shdr *symsec = sechdrs + symindex;
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Elf32_Shdr *relsec = sechdrs + relindex;
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Elf32_Shdr *dstsec = sechdrs + relsec->sh_info;
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Elf32_Rel *rel = (void *)relsec->sh_addr;
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unsigned int i;
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for (i = 0; i < relsec->sh_size / sizeof(Elf32_Rel); i++, rel++) {
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unsigned long loc;
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Elf32_Sym *sym;
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s32 r_offset;
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r_offset = ELF32_R_SYM(rel->r_info);
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if ((r_offset < 0) ||
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(r_offset > (symsec->sh_size / sizeof(Elf32_Sym)))) {
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printk(KERN_ERR "%s: bad relocation, section %d reloc %d\n",
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me->name, relindex, i);
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return -ENOEXEC;
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}
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sym = ((Elf32_Sym *)symsec->sh_addr) + r_offset;
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if ((rel->r_offset < 0) ||
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(rel->r_offset > dstsec->sh_size - sizeof(u32))) {
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printk(KERN_ERR "%s: out of bounds relocation, "
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"section %d reloc %d offset %d size %d\n",
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me->name, relindex, i, rel->r_offset,
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dstsec->sh_size);
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return -ENOEXEC;
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}
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loc = dstsec->sh_addr + rel->r_offset;
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switch (ELF32_R_TYPE(rel->r_info)) {
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case R_SCORE_NONE:
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break;
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case R_SCORE_ABS32:
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*(unsigned long *)loc += sym->st_value;
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break;
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case R_SCORE_HI16:
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break;
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case R_SCORE_LO16: {
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unsigned long hi16_offset, offset;
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unsigned long uvalue;
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unsigned long temp, temp_hi;
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temp_hi = *((unsigned long *)loc - 1);
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temp = *(unsigned long *)loc;
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hi16_offset = (((((temp_hi) >> 16) & 0x3) << 15) |
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((temp_hi) & 0x7fff)) >> 1;
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offset = ((temp >> 16 & 0x03) << 15) |
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((temp & 0x7fff) >> 1);
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offset = (hi16_offset << 16) | (offset & 0xffff);
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uvalue = sym->st_value + offset;
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hi16_offset = (uvalue >> 16) << 1;
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temp_hi = ((temp_hi) & (~(0x37fff))) |
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(hi16_offset & 0x7fff) |
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((hi16_offset << 1) & 0x30000);
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*((unsigned long *)loc - 1) = temp_hi;
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offset = (uvalue & 0xffff) << 1;
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temp = (temp & (~(0x37fff))) | (offset & 0x7fff) |
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((offset << 1) & 0x30000);
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*(unsigned long *)loc = temp;
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break;
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}
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case R_SCORE_24: {
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unsigned long hi16_offset, offset;
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unsigned long uvalue;
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unsigned long temp;
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temp = *(unsigned long *)loc;
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offset = (temp & 0x03FF7FFE);
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hi16_offset = (offset & 0xFFFF0000);
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offset = (hi16_offset | ((offset & 0xFFFF) << 1)) >> 2;
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uvalue = (sym->st_value + offset) >> 1;
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uvalue = uvalue & 0x00ffffff;
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temp = (temp & 0xfc008001) |
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((uvalue << 2) & 0x3ff0000) |
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((uvalue & 0x3fff) << 1);
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*(unsigned long *)loc = temp;
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break;
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}
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default:
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printk(KERN_ERR "%s: unknown relocation: %u\n",
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me->name, ELF32_R_TYPE(rel->r_info));
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return -ENOEXEC;
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}
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}
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return 0;
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}
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int apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab,
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unsigned int symindex, unsigned int relsec,
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struct module *me)
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{
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/* Non-standard return value... most other arch's return -ENOEXEC
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* for an unsupported relocation variant
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*/
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return 0;
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}
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/* Given an address, look for it in the module exception tables. */
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const struct exception_table_entry *search_module_dbetables(unsigned long addr)
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{
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return NULL;
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}
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